* * * FOR ALL
TASK 72-25-00-440-801
1 . General.
A.This procedure gives instructions to assemble the fan hub module. Refer to Figure 1001.
•
Fan hub module (25-010 , 72-00-02) (SIN 00102)
•
Fan hub module (25-011 , 72-00-02) (SIN 00102) - (SB 72-0156) (Non-Rake Capable Fan Hub Frame Assembly)
•
Fan hub module (25-012 , 72-00-02) (SIN 00102) - (SB 72-0156) (Rake Capable Fan Hub Frame Assembly).
The fan hub module contains:
•
Fan hub frame assembly (10-400) (SIN 84000)
•
Fan hub frame assembly (10-401) (SIN 84000) - (SB 72-0156) (Non-Rake Capable Fan Hub Frame Assembly)
•
Fan hub frame assembly (10-402) (SIN 84000) - (SB 72-0156) (Rake Capable Fan Hub Frame Assembly).
The fan hub frame assembly contains:
•
Fan hub frame (01-490 , 72-26-00) (SIN 840A0)
•
Fan hub frame (01-491 , 72-26-00) (SIN 840A0) - (SB 72-0156) (Non-Rake Capable Fan Hub Frame Assembly)
•
Fan hub frame (01-492 , 72-26-00) (SIN 840A0) - (SB 72-0156) (Rake Capable Fan Hub Frame Assembly).
B.This procedure starts with the fan hub frame assembly installed in the 9429M60   roll-over stand or 11C4100   roll-over stand.
C.Protective covers are to be installed on spare assemblies only.
D.Install all the bolts with the heads up and/or forward unless specific instructions are given.
E.Apply lubricants to threads and friction surfaces only.
F.Performed packing is not reusable. New preformed packing must be installed.
G.Chilling of close fitting parts for ease of assembly is not permitted. Use a heat gun when the parts are difficult to assemble. Do not heat the parts to over 266°F (130°C). Do not heat the parts for a long period of time or engine oil may dry and cause interference between parts.
WARNING:
REFER TO THE PRODUCT LABEL AND THE MANUFACTURER’S (MATERIAL) SAFETY DATA SHEET (SDS) FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF CONSUMABLE PRODUCTS.
WARNING:
DELETED.
H.Clean the parts that have been exposed to casual contamination (sneezes, saliva, handling with bare hands, etc.) with the cleaning process specified for the hardware. Bearings packed in grease must be fully cleaned. Clean the parts with C04-002  stoddard solvent, C04-035  isopropyl alcohol, or a 50-50 blend of C04-035  isopropyl alcohol and C04-014  denatured alcohol then lubricate with C02-019  engine oil or C02-023  engine oil.
I.Make an inspection of incorrectly installed hardware for damage after disassembly.
J.Bearings.
(1)Do not touch the No. 3 roller bearing (030A5) or the No. 3 ball bearing (030A7) with bare hands. Wear clean lint free C10-139   Gloves or latex C10-140  Gloves when you touch the bearing components.
(2)Be careful with the components of the No. 3 roller bearing (030A5) and the No. 3 ball bearing (030A7). Refer to TASK 70-14-00-620-003 (HANDLING OF BEARINGS) and TASK 70-60-01-620-002 (PRESERVATION OF ANTIFRICTION BEARINGS) .
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(3)Bearings must have a thick layer of C02-019  engine oil or C02-023  engine oil applied and must be kept wrapped in plastic film until installed.
(4)The bearing components are matched sets, so the inner and outer races have the same serial number. Make sure that the serial numbers are the same before you install a bearing so that the matched assemblies are installed. Keep a record of the bearing serial numbers.
K.Torque.
(1)Unless otherwise instructed, all fastener threads shall be lubricated with anti-seize compound before installation.
(2)Torque values given are torque to the fastener. If a torque multiplier is used, input torque to the multiplier must be calculated. Final torque is to be applied at room temperature. Refer to TASK 70-51-00-400-004 (TIGHTENING PRACTICES AND TORQUE VALUES) .
L.Follow the instructions to safety parts with a safety wire, safety cable, cotter pins, or tab washers. Refer to TASK 70-11-00-400-001 (FASTENER RETENTION PROCEDURES) .
2 . Tools, Equipment, and Materials.
NOTE:
You can use equivalent alternatives for tools, equipment, and consumable materials.
A.Tools and Equipment.
(1)Special Tools.
 
Tool No.
Description
 
11C3235G01
Fixture, Lift - Transfer Gearbox (TGB lifting tool) (alternative to 11C4106)
 
11C3336G01
Fixture, Support - Transfer Gearbox (TGB) (TGB support fixture)
 
11C3454G02
Fixture, Flow Check - No. 3 Bearing Dampers, FHF (flow check fixture)
 
11C3921G01
Tool Set, Shipping Fixture IGB (shipping fixture)
 
11C4016G01
Extractor
 
11C4100G02
Stand, Adjustable, Roll-Over - Sub Assembly (roll-over stand) (recommended)
 
11C4101G02
Bracket, Fan Hub Frame - Rollover Stand (bracket)
NOTE:
Tool is supplied as single item, there are 2 brackets required for use. 11C4101G01 tool drawing is in imperial, 11C4101G02 is metric, tools are interchangeable.
 
11C4103G02
FHF Lifting Tool
 
11C4104G02
Tool, Restraining
 
11C4105G01
Shroud, Heating
 
11C4105G02
Shroud, Heating (recommended)
 
11C4106G02
Tool, TGB Lifting (TGB lifting tool)
 
11C4107G02
Tool, IGB Lifting
 
11C4109G02
Tool, IGV Ring Seating/Removal (IGV seating/removal tool)
 
11C4110G02
Guide, No. 3 Bearing (bearing guide)
 
11C4111G01
Oil/Air Supply Tube
 
11C4112G02
Ring, Seating
 
11C4113G02
Damper Housing Flow Check Tool (flow check tool)
 
11C4114G02
Parallel Bar
 
11C4115G02
Parallel Bar Support
 
11C4116G02
Tool, Nozzle Plug
 
11C4117G02
Deleted
 
11C4118G02
Load Apply Tool
 
11C4119P01
Pin, Alignment-Damper Housing (alignment pin)
 
11C4121G02
Tool, Carbon Seal Ramp
 
11C4122G02
No. 3 Bearing Carbon Seal Flow Check Tool (carbon seal flow check tool)
 
11C4123G02
Shroud, Heating (heating shroud)
 
11C4125P01
Check Tool, IGV Angle
 
11C4126G02
Piston Rings Leakage Check (leakage check tool)
 
11C4128G02
Oil Check Test Protection
 
11C4129G02
IGB Lifting Tool (lifting tool) (alternative to 11C4107)
 
11C4831G01
Tool, Sump Cavity Pressure Check
 
2126M47G01
Shipping Fixture, IGB Assembly (shipping fixture) (part of 11C3921)
 
2126M83G01
Protection Nipple (part of 11C3921)
 
9429M60G02
Stand, Adjustable Roll-Over - Sub Assembly (roll-over stand)
 
9429M60G03
Stand, Adjustable Roll-Over - Sub Assembly (roll-over stand)
NOTE:
Tool 9429M60G03 is an alternative to 9429M60G02.
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials.
 
Code No.
Description
 
C02-019
Oil, Engine Lubricating (GE spec. D50TF1) (engine oil)
 
C02-023
Oil, Engine Lubricating, MIL-PRF-23699 (engine oil)
 
C02-058
Graphite, Compound, Thread Lubricating (Ge Spec. A50TF201 Class A) (lubricant)
 
C04-002
Solvent, Stoddard (stoddard solvent)
 
C04-014
Denatured Alcohol (denatured alcohol)
 
C04-035
Isopropyl Alcohol (isopropyl alcohol)
 
C10-139
Gloves, White Cotton Disposable (gloves)
 
C10-140
Gloves, Film Latex or Nylon/Polyethylene, Disposable (gloves)
 
C10-182
Cleaning Cloth (wipers)
C.Referenced Procedures.
 
ATA No.
Description
 
70-11-00
Fastener Retention Procedures
 
70-11-01
Safety Wire Procedure
 
70-14-00
Handling of Bearings
 
70-51-00
Tightening Practices and Torque Values
 
70-60-01
Preservation of Anti-Friction Bearings
 
72-26-00
Assembly 001
D.Expendable Parts.
 
CSN
Description
 
01-080
Preformed Packing
 
05-030
Lever Pin Bushing
 
05-040
IGV Outer Bushing
 
05-120
Deleted
 
05-130
Washer
 
05-140
IGV Inner Bushing
 
05-150
IGV Shoulder Washer (washer)
 
10-030
Preformed Packing
 
10-050
Preformed Packing
 
10-160
Preformed Packing
 
10-170
Preformed Packing
 
10-190
Preformed Packing
 
10-280
Preformed Packing
 
10-290
Preformed Packing
 
10-310
Preformed Packing
 
10-330
Preformed Packing
 
10-350
Preformed Packing
 
10-370
Preformed Packing
 
05-170 , 79-22-20
Preformed Packing
* * * FOR ALL
Figure 1001   (Sheet 1 ) Fan Hub Module - Assembly
* * * FOR ALL
Figure 1001   (Sheet 2 ) Fan Hub Module - Assembly
* * * FOR ALL
Figure 1001   (Sheet 3 ) Fan Hub Module - Assembly
3 . Procedure.
Subtask 72-25-00-440-003
A.Record dimension BK or dimension PA as follows:
(1)Find the stamp with the fan hub frame thickness, dimension BK or dimension PA on the aft side of the fan hub frame at the 12:00 o'clock position. Refer to Figure 1002.
(2)Make a record of dimension BK or dimension PA on the record sheet. Refer to Figure 1003.
* * * FOR ALL
Figure 1002   Dimension BK or Dimension PA Stamp Location
* * * FOR ALL
Figure 1003   Measurement Record Sheet
Subtask 72-25-00-710-002
B.Do an oil flow check of the damper housing (03001) as follows:
CAUTION:
DO NOT TOUCH THE BEARING COMPONENTS WITH BARE HANDS. SKIN OILS AND SALT CAN CAUSE CORROSION. USE CLEAN CLOTH C10-139   GLOVES OR NYLON C10-140  GLOVES WHEN YOU TOUCH THE BEARING COMPONENTS.
(1)Put the damper housing on a clean, flat work surface, forward end up.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(2)Apply C02-019  engine oil or C02-023  engine oil to the two o-rings (item 3) and the o-rings of the plugs (item 4) of the 11C4113   flow check tool.
(3)Install the plugs (item 4) in the ports of the damper housing.
(4)Install the o-rings (item 3) in the piston ring grooves of the support (item 2).
(5)Install the support (item 2) in the damper housing.
(6)Connect an oil flow cart to the oil tube (item 6) of the 11C4113   flow check tool. Use C02-019  engine oil or C02-023  engine oil for the flow check. Make sure all oil circuit connections are correct.
WARNING:
REFER TO THE PRODUCT LABEL AND THE MANUFACTURER’S (MATERIAL) SAFETY DATA SHEET (SDS) FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF CONSUMABLE PRODUCTS.
CAUTION:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE THAT YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE INJURY TO PERSONNEL OR DAMAGE TO THE EQUIPMENT.
(7)Do a flow check of the damper housing at a pressure of 95-105 psig (655-724 kPa). Use C02-019  engine oil or C02-023  engine oil at a temperature of 70 to 100°F (21 to 38°C). Collect and measure the oil that drains from the sump in 1 minute. Measure the amount of oil with a graduated cylinder.
(8)Record the oil flow rate (M1) on the oil flow record sheet. The oil flow must be 0.26-0.36 gallons/minute (0.984-1.362 liters/minute). Refer to Figure 1003.
(9)Release the pressure and disconnect the oil flow cart.
(10)Use the 11C4016   extractor to remove the 11C4113   flow check tool from the damper housing as follows:
(a)Put the ring (item 2) of the 11C4016   extractor on the work table.
(b)Install the damper housing on the ring with the 11C4113   flow check tool mounted.
(c)Put the plate (item 3) of the 11C4016   extractor on the 11C4113   flow check tool.
(d)Push out the ring (item 3) of the 11C4016   extractor with the 11C4113   flow check tool from the damper housing with a rubber mallet.
(11)Put the damper housing forward end up on a clean work surface.
(12)Install the two piston rings (030W0) on the 11C4126   leakage check tool as follows:
(a)Install the forward piston ring with the thinner tab on the piston ring end aft.
(b)Install the aft piston ring with the thinner tab on the piston ring end forward.
(c)Turn the aft piston ring to put the piston ring gap 180 degrees opposite of the forward piston ring gap.
CAUTION:
BE VERY CAREFUL WHEN YOU INSTALL THE LEAKAGE CHECK TOOL IN THE DAMPER HOUSING. DO NOT USE FORCE. DAMAGE TO THE PISTON RINGS CAN OCCUR.
(13)Carefully install the 11C4126   leakage check tool in the damper housing. Make sure not to damage the piston rings.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(14)Connect an oil flow cart to the leakage check tool. Use C02-019  engine oil or C02-023  engine oil for the leakage check. Make sure all oil circuit connections are correct.
WARNING:
REFER TO THE PRODUCT LABEL AND THE MANUFACTURER’S (MATERIAL) SAFETY DATA SHEET (SDS) FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF CONSUMABLE PRODUCTS.
CAUTION:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE THAT YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE INJURY TO PERSONNEL OR DAMAGE TO THE EQUIPMENT.
(15)Do a flow check of the damper housing at a pressure of 95-105 psig (655-724 kPa). Use C02-019  engine oil or C02-023  engine oil at a temperature of 70 to 100°F (21 to 38°C). Collect and measure the oil that drains from the sump in 1 minute. Measure the amount with a graduated cylinder.
(16)Record the oil flow rate (Md) on the oil flow record sheet. Refer to Figure 1003.
(17)Calculate the leakage rate (M3d) as follows:
(a)Subtract the oil flow rate (M1) from the oil flow rate (Md) to calculate the leakage rate (M3d).
Md - M1 = M3d
(b)Leakage rate must not be more than 0.05 gal/minute (0.189 liter/minute).
(c)Record the leakage rate on the oil flow record sheet.
(18)Release the pressure and disconnect the oil flow cart.
(19)Use the 11C4016   extractor to remove the 11C4126   leakage check tool from the damper housing as follows:
(a)Put the ring (item 2) of the 11C4016   extractor on the work table.
(b)Install the damper housing on the ring with the 11C4126   leakage check tool mounted.
(c)Put the plate (item 3) of the 11C4016   extractor on the 11C4126   leakage check tool.
(d)Push out the ring (item 3) of the 11C4016   extractor with the 11C4126   leakage check tool from the damper housing with a rubber mallet.
(20)Remove the piston rings (030W0) from the 11C4126   leakage check tool.
Subtask 72-25-00-440-063
WARNING:
ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.
CAUTION:
MAKE SURE THAT THE FAN HUB FRAME ASSEMBLY IS CORRECTLY INSTALLED IN THE 11C4101   BRACKET ON THE 9429M60   ROLL-OVER STAND OR 11C4100   ROLL-OVER STAND. IF THE FAN HUB FRAME ASSEMBLY IS NOT CORRECTLY INSTALLED IN THE TOOLING WHEN IT IS TURNED, THE FAN HUB FRAME ASSEMBLY, THE FAN HUB FRAME ASSEMBLY CAN FALL AND CAUSE INJURY TO PERSONNEL OR DAMAGE TO THE EQUIPMENT.
C.Alternative Procedure Available. Turn the fan hub frame assembly in the 9429M60   roll-over stand or 11C4100   roll-over stand to the vertical position, forward end down, as follows. Refer to Figure 1004.
CAUTION:
FLOOR LOCKS MUST REMAIN IN CONTACT WITH THE FLOOR AT ALL TIMES EXCEPT WHEN REQUIRED TO MOVE THE STAND. THE STAND CASTERS DO NOT PROVIDE SUFFICIENT STABILITY TO PERMIT SAFE WORKING CONDITIONS.
(1)Engage the floor locks (item 69) of the 9429M60   roll-over stand or 11C4100   roll-over stand.
(2)Move the lever (item 24) to unlock the hand wheel (item 31).
(3)Turn the hand wheel (item 31) until the fan hub frame assembly is in the vertical position, forward end down.
CAUTION:
THE LOCATING PIN (ITEM 23) MUST BE ENGAGED IN THE 9429M60   ROLL-OVER STAND OR 11C4100   ROLL-OVER STAND, WHEN YOU DO WORK ON THE FAN HUB FRAME ASSEMBLY. THE LOCATING PIN STOPS THE ACCIDENTAL ROTATION OF THE FAN HUB FRAME ASSEMBLY.
(4)Move the lever (item 24) to engage the locating pin (item 23) into the locating plate (item 6) to lock the hand wheel (item 31).
Subtask 72-25-00-440-070
WARNING:
ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.
CAUTION:
MAKE SURE THAT THE FAN HUB FRAME ASSEMBLY IS CORRECTLY INSTALLED IN THE 11C4101   BRACKET ON THE 11C4100   ROLL-OVER STAND. IF THE FAN HUB FRAME ASSEMBLY IS NOT CORRECTLY INSTALLED IN THE TOOLING WHEN IT IS TURNED, THE FAN HUB FRAME ASSEMBLY CAN FALL AND CAUSE INJURY TO PERSONNEL OR DAMAGE TO THE EQUIPMENT.
C.A.Alternative Procedure. Turn the fan hub frame assembly in the 11C4100   roll-over stand to the vertical position, forward end down, as follows. Refer to Figure 1005.
(1)Engage the articulated feet (item 29) of the 11C4100   roll-over stand.
(2)Remove the blocking pin (item 14) to unlock the reducer wheel (item 12).
(3)Turn the reducer wheel (item 12) until the fan hub frame assembly is in the horizontal position, top vertical centerline up.
(4)Insert the blocking pin (item 14) in the relevant hole to lock the support shaft.
* * * FOR ALL
Figure 1004   Fan Hub Frame Assembly Installed in the Roll-Over Stand, 9429M60
* * * FOR ALL
Figure 1005   Fan Hub Frame Assembly in the Roll-Over Stand, 11C4100, with Bracket, 11C4101
Subtask 72-25-00-440-004
D.Install the damper housing (10-320) (SIN 03001) on the fan hub frame assembly as follows:
WARNING:
STODDARD SOLVENT IS TOXIC. USE PERSONAL PROTECTION EQUIPMENT.
WARNING:
ISOPROPYL ALCOHOL IS TOXIC AND FLAMMABLE. USE PERSONAL PROTECTION EQUIPMENT. USE IN A WELL-VENTILATED AREA.
(1)Clean the damper housing with a 50-50 blend of C04-014   denatured alcohol and C04-035   isopropyl alcohol, C04-002   Stoddard solvent, or C04-035   isopropyl alcohol as follows:
(a)Clean the threads of the damper housing shoulder studs.
(b)Clean the flange mating face of the damper housing.
(c)Clean the flange mating faces of the fan hub frame assembly.
(2)Install the damper housing and the mating surfaces of the nuts (03041) and nuts (item 3) of the 11C4112   seating ring.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(3)Apply C02-019  engine oil or C02-023  engine oil to the threads and mating surfaces of the nuts (03041) and the nuts (item 3) of the 11C4112   seating ring. Refer to Figure 1007.
NOTE:
Use the minimum quantity of engine oil necessary for assembly. After assembly, remove unwanted engine oil with a clean cloth.
(4)Apply C02-019  engine oil or C02-023  engine oil to the outside diameter (OD) of the damper housing (seal gasket) (03050) on both sides.
CAUTION:
MAKE SURE THAT THE SEAL GASKET (03050) DOES NOT COME INTO CONTACT WITH SOLVENTS. REPLACE THE SEAL GASKET IF CONTACT OCCURS WITH SOLVENTS, BECAUSE THE RUBBER MEMBRANE WILL BE DAMAGED.
(5)Align the boltholes in the seal gasket (03050) with the shoulder studs in the damper housing. Refer to Figure 1006.
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLD PARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
(6)Increase the temperature of the fan hub frame assembly aft inner flange to 257°F (125.0°C).
(7)Install the 11C4119   alignment pin in the fan hub frame assembly at the 5:30 o'clock position on the forward side.
(8)Install the damper housing on the fan hub frame assembly from the aft side. Use the 11C4119   alignment pin to align the damper housing with the fan hub frame assembly.
(9)Install the 11C4112   seating ring on the forward flange of the fan hub frame assembly as follows. Refer to Figure 1007.
(a)Align the TOP POINT mark on the base (item 2) with the top vertical centerline of the fan hub frame assembly.
(b)Install a minimum of four nuts (item 3) on the shoulder studs at equally spaced locations.
(c)Torque the nuts (item 3) in a criss-cross pattern to 86 lb in. (9.7 N.m).
(d)Torque the nuts in a criss-cross pattern (item 3) to 106-124 lb in. (12.0-14.0 N.m).
(10)When the assembly is at room temperature, check the torque of the nuts (item 3) of the 11C4112   seating ring.
(11)Install the nuts (03041) on the shoulder studs at the 12:00, 3:45, and 8:15 o'clock positions. Torque the nuts (03041) to 106-124 lb in. (12.0-14.0 N.m).
(12)Do a shim check between the damper housing and the seal gasket (03050) to make sure the damper housing is fully installed. Use a 0.001 inch (0.03 mm) shim.
(13)Remove the nuts (item 3) and remove the 11C4112   seating ring from the fan hub frame assembly.
(14)Remove the 11C4119   alignment pin from the fan hub frame assembly.
* * * FOR ALL
Figure 1006   Installation of the Seal Gasket to the Damper Housing
* * * FOR ALL
Figure 1007   Installation of the Damper Housing into the Fan Hub Frame Assembly
Subtask 72-25-00-440-007
CAUTION:
THE NO. 3 ROLLER BEARING IS A MATCHED ASSEMBLY. IF ANY PART IS NOT SERVICEABLE, REPLACE THE COMPLETE BEARING ASSEMBLY. KEEP MATCHED BEARING PARTS AS A SET BY SERIAL NUMBER. THE MIXTURE OF SERVICEABLE MATCHED BEARING COMPONENTS CAN RESULT IN ENGINE FAILURE.
CAUTION:
DO NOT TOUCH THE BEARING COMPONENTS WITH BARE HANDS. SKIN OILS AND SALT CAN CAUSE CORROSION. USE CLEAN LATEX C10-140   GLOVES WHEN YOU TOUCH THE BEARING COMPONENTS.
E.Install the inlet gearbox (IGB bearing assembly) (03000) as follows:
Subtask 72-25-00-160-001
WARNING:
REFER TO THE PRODUCT LABEL AND THE MANUFACTURER’S (MATERIAL) SAFETY DATA SHEET (SDS) FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF THIS PRODUCT.
(1)Before the installation of the IGB bearing assembly into the fan module, do a last chance wipe of the bore of the horizontal gearshaft using new C10-182  wipers with clean C02-019  engine oil.
Subtask 72-25-00-440-076
(2)Be careful with the components of the IGB bearing assembly. Refer to TASK 70-14-00-620-003 (HANDLING OF BEARINGS) and TASK 70-60-01-620-002 (PRESERVATION OF ANTIFRICTION BEARINGS).
(3)If necessary, remove the IGB bearing assembly from the 11C3921   shipping fixture. Refer to Figure 1008.
WARNING:
REFER TO THE PRODUCT LABEL AND THE MANUFACTURER’S (MATERIAL) SAFETY DATA SHEET (SDS) FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF THESE PRODUCTS.
(4)Clean the mounting flange mating faces of the No. 3 cylindrical roller bearing (No. 3 bearing outer race) (01-130 , 72-61-00) (SIN 030A5), fan hub frame assembly, threads and mating surfaces of self-locking nuts (nuts) (10-200) (SIN 03040) with C04-035  isopropyl alcohol, C04-002  Stoddard solvent, or a 50-50 lend of C04-014  denatured alcohol and C04-035  isopropyl alcohol as follows:
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE, AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
CAUTION:
KEEP THE PISTON RINGS FLAT AND DO NOT TWIST THEM WHEN YOU WORK WITH THEM. TWISTED OR DAMAGED PISTON RINGS MUST NOT BE USED.
(5)Apply a light coat of C02-019  engine oil or C02-023  engine oil to the piston rings (030W0) and the grooves in the No. 3 bearing outer race.
(6)Apply C02-019  engine oil or C02-023  engine oil to the threads and mating surfaces of nuts (03040). Refer to Figure 1010.
(7)Install a piston ring in the forward ring groove of the No. 3 bearing outer race. Install the piston ring with the thin tab on the piston ring ends aft. Refer to Figure 1009.
(8)Install a piston ring in the aft ring groove of the No. 3 bearing outer race. Install the piston ring with the thin tab on the piston ring ends forward.
(9)Make sure that the aft piston ring gap is 180 degrees opposite of the forward piston ring gap.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(10)Apply C02-019  engine oil or C02-023  engine oil to the preformed packing (10-330) (SIN 03052).
(11)Install the preformed packings (10-330) (SIN 03052) on the tubes (oil tubes) (030S0).
(12)Install the oil tubes in the No. 3 bearing lube nozzles (030B0) on the IGB bearing assembly.
(13)Turn the fan hub frame assembly in the 9429M60   roll-over stand or 11C4100   roll-over stand to the vertical position, forward end up, as follows. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
(14)Install the 11C4105   heating shroud on the forward flange of the fan hub frame assembly as follows:
(a)Install the diffuser (item 3) of the 11C4105   heating shroud into the damper housing (03001) on the forward side of the fan hub frame assembly.
(b)Tighten the nuts (item 4) to hold the 11C4105   heating shroud against the fan hub frame assembly.
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLD PARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
CAUTION:
DO NOT INCREASE THE TEMPERATURE OF THE FAN HUB FLANGE MORE THAN 302°F (150°C). TEMPERATURES OF MORE THAN 302°F (150°C) CAN DAMAGE THE PREFORMED PACKINGS INSTALLED ON THE FAN HUB FRAME ASSEMBLY AND IGB BEARING ASSEMBLY.
CAUTION:
DO NOT INCREASE THE TEMPERATURE OF THE FAN HUB FRAME ASSEMBLY IF IT IS NOT IN THE VERTICAL, FORWARD END UP POSITION. DAMAGE TO THE SEAL GASKET (03050) CAN OCCUR.
(15)Increase the temperature of the fan hub frame assembly forward flange to 302°F (150°C).
(16)Install the 11C4110   bearing guide on the aft flange of the fan hub frame assembly as follows:
(a)Install the central shaft (item 2) of the 11C4110   bearing guide into the aft flange of the fan hub frame assembly.
(b)Make sure that the 11C4110   bearing guide is in the correct position.
(c)Install the screws (item 6) into the aft flange of the fan hub frame assembly.
(d)Install the pin (item 5) into the central shaft (item 2) to hold the 11C4110   bearing guide in the correct position.
(17)Install the 11C4107   IGB lifting tool or 11C4129   lifting tool on the IGB bearing assembly.
(18)Remove the hardware that attaches the IGB bearing assembly to the 2126M43   IGB support. Refer to Figure 1008.
WARNING:
ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.
(19)Lift the IGB bearing assembly from the 2126M43   IGB support.
WARNING:
DRY ICE CAUSES LOW TEMPERATURE BURNS, AND CAN CAUSE SUFFOCATION. DO NOT LET THIS MATERIAL TOUCH YOU. USE PERSONAL PROTECTION EQUIPMENT. USE EYE PROTECTION.
(20)Apply dry ice to the No. 3 bearing outer race and piston rings for 10 minutes.
WARNING:
ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.
(21)Lift the IGB bearing assembly and put it in position near the fan hub frame assembly.
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLD PARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
(22)Remove the 11C4105   heating shroud from the fan hub frame assembly.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE, AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(23)Apply C02-019  engine oil or C02-023  engine oil to the piston rings (030W0) and the bores in the damper housing for the oil tubes.
CAUTION:
MAKE SURE YOU ALIGN THE NO. 3 BEARING OUTER RACE OF THE IGB BEARING ASSEMBLY WITH THE DAMPER HOUSING. DAMAGE TO THE PISTON RINGS CAN OCCUR. DO NOT FORCE THE IGB BEARING ASSEMBLY INTO THE FAN HUB FRAME ASSEMBLY. DAMAGE CAN OCCUR.
(24)Put the IGB bearing assembly in position above the fan hub frame assembly and carefully install it on the forward flange of the fan hub frame assembly. Refer to Figure 1010.
(25)Attach the IGB bearing assembly to the fan hub frame assembly with 18 nuts (03040). Do not install nuts (03040) above and below the oil inlet ports at the 3:00 and 9:00 o'clock positions.
(26)Torque the nuts (03040) in a criss-cross pattern to 86 lb in. (9.7 N.m).
(27)Remove the 11C4107   IGB lifting tool or 11C4129   lifting tool from the IGB bearing assembly.
(28)Let the parts return to room temperature.
(29)Torque the nuts (03040) to 106-124 lb in. (12.0-14.0 N.m).
(30)Do a shim check to make sure the IGB bearing assembly housing and the No. 3 roller bearing outer race is fully against the forward flange of the fan hub frame assembly. Use a 0.001 inch (0.03 mm) shim.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE, AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(31)Apply C02-019  engine oil or C02-023  engine oil to the threads and mating surfaces of machine bolts (bolts) (030F3) and machine bolts (bolts) (030F6).
(32)Install the bolts (030F6) on the IGB bearing assembly.
(33)Install the bolts (030F3) on the IGB bearing assembly.
(34)Torque the bolts (030F3, 030F6) to 51-59 lb in. (5.8-6.7 N.m).
(35)Remove the 11C4110   bearing guide from the fan hub frame assembly.
* * * FOR ALL
Figure 1008   (Sheet 1 ) IGB Bearing Assembly in the Shipping Fixture, 11C3921
* * * FOR ALL
Figure 1008   (Sheet 2 ) IGB Bearing Assembly in the Shipping Fixture, 11C3921
* * * FOR ALL
Figure 1009   Installation of the Piston Rings in the No. 3 Roller Bearing Outer Race
* * * FOR ALL
Figure 1010   (Sheet 1 ) Installation of the IGB Bearing Assembly
* * * FOR ALL
Figure 1010   (Sheet 2 ) Installation of the IGB Bearing Assembly
Subtask 72-25-00-220-013
F.Do a dimensional check of the IGB bearing assembly (10-230) (SIN 03000) as follows:
(1)Turn the fan hub frame assembly in the 9429M60   roll-over stand or 11C4100   roll-over stand to the vertical position, forward end down, as follows. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
(2)Install the 11C4104   restraining tool. Refer to Figure 1011 and do as follows:
(a)Install the shaft (item 4) and flange (item 3) on the forward side of the IGB bearing assembly. Engage the tabs on the flange (item 3) with the forward face on the inside diameter (ID) of the horizontal bevel gear.
(b)Install the flange (item 2) on the shaft (item 4) and the aft side of the IGB bearing assembly (10-230) (SIN 03000). Engage the tabs on the flange (item 2) with the No. 3 bearing rotating seal (01-110 , 72-61-00) (SIN 03003).
(c)Attach the flange (item 2) to the shaft (item 4) with socket head screws (item 7).
(3)Install the 11C4118   load apply tool as follows:
(a)Install the bridge (item 2) of the 11C4118   load apply tool on the inner aft flange of the fan hub frame assembly at the 3:00 and 9:00 o'clock positions.
(b)Attach the bridge (item 2) to the fan hub frame assembly with hex head bolts (item 7).
(4)Install the 11C4114   parallel bar as follows:
(a)Put the 11C4114   parallel bar across the middle aft flange (surface A) of the fan hub frame assembly.
(b)Install the 11C4115   parallel bar support on one end of the 11C4114   parallel bar.
(c)Engage the support (item 2) with the fan hub frame assembly flange and tighten the threaded bar (item 4) to hold the 11C4114   parallel bar against the fan hub frame assembly.
(5)Measure and record dimension E103S as follows. Refer to Figure 1012.
(a)Install the threaded bushing (item 3) of the 11C4118   load apply tool on the shaft (item 4) of the 11C4104   restraining tool. Tighten the threaded bushing (item 3) to 10.1 lb in. (1.14 Nm) to apply a load of 100 lbs (444.82 N).
(b)Measure the distance from surface A of the fan hub frame assembly to the aft face of the No. 3 bearing rotating seal. Measure at four equally spaced locations.
(c)Record the measurements as E103S MAX on the record sheet. Refer to Figure 1003.
(d)Calculate and record the average measurement E103S MAX. The dimension must be 2.862-2.893 inches (72.69-73.48 mm).
(e)Remove the threaded bushing (item 3) of the 11C4118   load apply tool from the shaft (item 4) of the 11C4104   restraining tool.
(f)Install the nut (item 6) of the 11C4118   load apply tool on the shaft (item 4) of the 11C4104   restraining tool. Tighten the nut (item 6) to 10.1 lb in. (1.14 Nm) to apply a load of 100 lbs (444.82 N).
(g)Measure the distance from surface A of the fan hub frame assembly to the aft face of the No. 3 bearing rotating seal. Measure at four equally spaced locations.
(h)Record the measurements as E103S MIN on the record sheet. Refer to Figure 1003.
(i)Calculate and record the average measurement E103S MIN. The dimension must be 2.862-2.893 inches (72.69-73.48 mm).
(6)Remove the 11C4115   parallel bar support and the 11C4114   parallel bar.
(7)Remove the 11C4118   load apply tool.
(8)Remove the 11C4104   restraining tool.
(9)If a part of the IGB bearing assembly (10-230) (SIN 03000) is replaced (such as the No. 3 bearing rotating seal, (01-110 , 72-61-00) (SIN 03003)) or dimension AO is not available from the IGB build / assembly records (refer to TASK 72-61-00-440-801 (72-61-00, ASSEMBLY 001) (Subtask 72-61-00-440-087)) then measure and record dimension AO. Refer to Figure 1012 and do as follows:
(a)Measure and record dimension AO from the aft face of the horizontal bevel gear, to the aft face of the No. 3 bearing rotating seal, at four equally-spaced locations. Compare the measurements to the limits below. Refer to Figure 1003.
Minimum serviceable limit:
•
The difference between maximum and minimum of the four values must not be more than 0.004 inch (0.10 mm).
•
Calculate and record the average value for dimension AO. The average value of dimension AO must be -0.030950 to 0.033142 inch (-0.78613 to 0.84181 mm).
Repair method:
Replace the IGB bearing assembly.
* * * FOR ALL
Figure 1011   IGB Bearing Assembly in the Restraining Tool, 11C4104
* * * FOR ALL
Figure 1012   (Sheet 1 ) Dimensional Inspection of the IGB Bearing Assembly Installation
* * * FOR ALL
Figure 1012   (Sheet 2 ) Dimensional Inspection of the IGB Bearing Assembly Installation
* * * FOR ALL
Figure 1012   (Sheet 3 ) Dimensional Inspection of the IGB Bearing Assembly Installation
Subtask 72-25-00-440-015
G.Install the oil supply tubes (tube connectors) (10-180) (SIN 442B1). Refer to Figure 1013 and do as follows:
(1)Turn the fan hub frame assembly in the 9429M60   roll-over stand or 11C4100   roll-over stand to the vertical position, forward end up, as follows. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(2)Apply a thin layer of C02-019  engine oil or C02-023  engine oil to the preformed packing (10-190) (SIN 442N2).
(3)Apply C02-019  engine oil or C02-023  engine oil to the chamfers of the preformed packing grooves on the tube connectors.
(4)Apply C02-019  engine oil or C02-023  engine oil to the threads and the mating surfaces of four nuts (03040).
NOTE:
Use a minimum quantity of lubricant necessary for assembly. After assembly, remove unwanted lubricant with a clean cloth.
(5)Install a preformed packing (10-190) (SIN 442N2) into the groove of each tube connector.
(6)Install the end of a tube connector in each of the ports at the 3:00 and 9:00 o'clock positions of the fan hub frame assembly.
(7)Install the nuts (03040) to the studs of the damper housing (03001) to attach the tube connectors against the flange of the IGB bearing assembly (03000).
(8)Torque the nuts (03040) to 106-124 lb in. (12.0-14.0 N.m).
* * * FOR ALL
Figure 1013   Installation of the Tube Connectors
Subtask 72-25-00-710-004
H.Connect the 11C3454   flow check fixture to the tube connectors (10-180) (SIN 442B1) and do a dual feed test. Refer to Figure 1014 and do as follows:
NOTE:
This procedure done with the testing procedure described in Subtask 72-25-00-710-005 (paragraph 3.L.) (single feed test) are an alternative to the testing procedure described in Subtask 72-25-00-710-003 (paragraph 3.M.).
NOTE:
The part of the rod that is above the top of the cylinder indicates the oil level in the cylinder. It is full if it is not above the top when pressurized.
(1)Turn the fan hub frame assembly in the 11C4100   roll-over stand or 9429M60   roll-over stand to the vertical position, forward end up. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
(2)Put a container below the fan hub frame assembly to collect oil released during the oil flow test.
(3)Remove the cap (item 27) from the female branch tee (item 26) on top of cylinder.
NOTE:
One altered hose assembly (item 9) is already attached to the female branch tee (item 26).
(4)Attach the second altered hose assembly (item 9) to the female branch tee (item 26).
(5)Remove all plugs (item 14) from the altered hose assemblies (item 9).
(6)Attach the two altered hose assemblies (item 9) to the tube connectors (10-180) (SIN 442B1) in the No. 3 bearing housing (01-170 , 72-61-00) (SIN 030A6).
(7)Turn the control valve (item 45) to the OFF position.
(8)Install the shop air to the long hex nipple (item 52).
(9)Switch the flow computer (item 29) power to ON.
NOTE:
If necessary, there is an additional gauge (item 74) to make sure that the flow computer indications are correct.
WARNING:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE AN INJURY OR CAN KILL YOU.
(10)Adjust the regulator filter (item 43) to cause an oil pressure of 98-102 psig (676-703 kPa gage) as read by back ported gauge (item 44).
NOTE:
The steps that follow must be done quickly because there is a limited quantity of oil.
(11)Open the control valve (item 45) to start the flow through the tube connectors (10-180) (SIN 442B1).
WARNING:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE AN INJURY OR CAN KILL YOU.
(12)Adjust the regulator filter (item 43) to keep the pressure at 95-105 psig (655-724 kPa gage).
(13)Look for oil flow through the bearing damper.
(14)Record the flow rate from the flow computer (item 29).
(15)When the test is completed, turn off the air supply to the system or set the regulator filter (item 43) to zero.
(16)Turn off the flow computer (item 29).
(17)Close the control valve (item 45).
(18)Disconnect the air line from the 11C3454   flow check fixture.
(19)Disconnect the 11C3454   flow check fixture from the tubes connectors (10-180) (SIN 442B1).
* * * FOR ALL
Figure 1014   (Sheet 1 ) Installation of the Flow Check Fixture, 11C3454, to the Tube Connectors
* * * FOR ALL
Figure 1014   (Sheet 2 ) Installation of the Flow Check Fixture, 11C3454, to the Tube Connectors
Subtask 72-25-00-440-016
I.Install the oil supply tube (01-070) (SIN 442A0) in the fan hub frame assembly. Refer to Figure 1015 and do as follows:
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(1)Apply C02-019  engine oil or C02-023  engine oil to the preformed packing (01-080) (SIN 442N4).
(2)Apply C02-019  engine oil or C02-023  engine oil to the lead-in chamfers of the preformed packing grooves in the oil supply tube.
(3)Apply C02-019   engine oil or C02-023   engine oil to the threads of the machine bolts (bolts) (442F2).
NOTE:
Use a minimum quantity of lubricant necessary for assembly. After assembly, remove unwanted lubricant with a clean cloth.
(4)Install the preformed packing (01-080) (SIN 442N4) on the oil supply tube.
(5)Install the oil supply tube through the lube supply port of the fan hub frame assembly. The port is at the 3:30 o'clock position aft looking forward (ALF).
(6)Attach the oil supply tube to the fan hub frame assembly with the bolts (442F2).
(7)Torque the bolts to 106-124 lb in. (12.0-14.0 N.m).
Subtask 72-25-00-440-017
J.Install the oil supply manifold (442A1) as follows. Refer to Figure 1015.
(1)Put the cushion loop clamps (clamps) (442V2) on the oil supply manifold at two locations.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(2)Apply C02-019  engine oil or C02-023  engine oil to the threads and mating surfaces of the oil supply tube (442A0) and the tube connectors (442B1).
(3)Loosely connect the oil supply manifold to the oil supply tube at the 8:30 o'clock position, forward looking aft (FLA). Tighten the connector hand-tight.
(4)Loosely connect the oil supply manifold to the tube connectors at the 3:00 and 9:00 o'clock positions. Tighten the connectors hand-tight.
(5)Make sure that the oil supply manifold and clamps are set so that the minimum amount of strain is on the tubes.
(6)Triple torque the B-nuts on the oil supply manifold to the tube connectors to 55-65 lb ft (75-88 N.m). Refer to TASK 70-51-00-400-004 (TIGHTENING PRACTICES AND TORQUE VALUES).
(7)Triple torque the B-nut on the oil supply manifold at the oil supply tube to 78-92 lb ft (106-125 N.m). Refer to TASK 70-51-00-400-004 (TIGHTENING PRACTICES AND TORQUE VALUES).
(8)Attach the clamps (10-090) (SIN 442V2) on the oil supply manifold to the fan hub frame assembly with machine bolts (bolts) (10-060) (SIN 442F6) and self-locking nuts (nuts) (10-070) (SIN 442K4).
(9)Attach the oil supply manifold to the fan hub frame assembly with bolts (442F6) and nuts (442K4).
(10)Torque the bolts (442F6) to 106-124 lb in. (12.0-14.0 N.m).
Subtask 72-25-00-440-064
K.Install the adapter (jumper tube adapter) (03070) and seal drain tube (484B0) as follows. Refer to Figure 1015.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(1)Apply C02-019  engine oil or C02-023  engine oil to the preformed packings (10-350) (SIN 03051) and (10-370) (SIN 03053).
(2)Install the preformed packings (10-350) (SIN 03051) and (10-370) (SIN 03053) on the jumper tube adapter.
(3)Install the small end of the jumper tube adapter into the inboard side of the fan hub frame assembly at the 5:30 o'clock position.
(4)Apply C02-019  engine oil or C02-023  engine oil to the preformed packings (10-160) (SIN 484N1) and (10-170) (SIN 484N0).
(5)Install the preformed packing (10-170) (SIN 484N0) to the aft end of the seal drain tube.
(6)Install the preformed packing (10-160) (SIN 484N1) to the forward end of the seal drain tube.
(7)Apply C02-019  engine oil or C02-023  engine oil to the washer face of the bolt (484F0).
(8)Install the aft end of the seal drain tube in the jumper tube adapter in the inboard side of the fan hub frame assembly.
(9)Install the forward end of the seal drain tube (484B0) into the fan hub frame assembly and attach with the machine bolt (bolt) (484F0).
(10)Torque the bolt (484F0) to 106-124 lb in. (12.0-14.0 N.m).
* * * FOR ALL
Figure 1015   (Sheet 1 ) Installation of the Oil Tubes and Oil Manifold
* * * FOR ALL
Figure 1015   (Sheet 2 ) Installation of the Oil Tubes and Oil Manifold
* * * FOR ALL
Figure 1015   (Sheet 3 ) Installation of the Oil Tubes and Oil Manifold
* * * FOR ALL
Figure 1015   (Sheet 4 ) Installation of the Oil Tubes and Oil Manifold
Subtask 72-25-00-710-005
L.Connect the 113454   flow check fixture to the oil supply tube (10-130) (SIN 442A4) and do a single feed test. Refer to Figure 1016 and do as follows:
NOTE:
This procedure done with testing procedure described in Subtask 72-25-00-710-004 (paragraph 3.H.) (dual feed test) are an alternative to the testing procedure described in Subtask 72-25-00-710-003 (paragraph 3.M.).
NOTE:
The part of the rod that is above the top of the cylinder indicates the oil level in the cylinder. It is full if it is not above the top when pressurized.
(1)Turn the fan hub frame assembly in the 11C4100   roll-over stand or 9429M60   roll-over stand to the vertical position, forward end up. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
(2)Put a container below the fan hub frame assembly to collect oil released during the oil flow test.
(3)Loose two bolts (10-120) (SIN 442F5) from the oil supply tube (10-130) (SIN 442A4).
(4)Install the adapter (item 23) on the oil supply tube (10-130) (SIN 442A4).
(5)Install the male connector (item 28) into the adapter (item 23) and attach it to the altered hose assembly (item 9).
(6)If a second altered hose assembly (item 9) is attached to the female branch tee (item 26), remove the altered hose assembly (item 9) and install a cap (item 27) on the female branch tee (item 26).
(7)Switch the flow computer (item 29) power to ON.
WARNING:
DO NOT EXCEED THE PRESSURE SPECIFIED FOR TESTING PROCEDURE WHEN ACTUATING THE ACCUMULATOR BOOSTER (ITEM 6). IF THE MAXIMUM PRESSURE IS EXCEEDED, DAMAGE AND FAILURE OF EQUIPMENT CAN RESULT AND CAUSE DEATH OR INJURY TO PERSONNEL.
WARNING:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE AN INJURY OR CAN KILL YOU.
(8)Adjust the regulator filter (item 43) to cause an oil pressure of 98-102 psig (676-703 kPa gage) as read by back ported gauge (item 44). If the pressure indications are not consistent, do a double check on the gauge (item 74).
WARNING:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE AN INJURY OR CAN KILL YOU.
NOTE:
The steps that follow must be done quickly because there is a limited quantity of oil.
(9)Open the control valve (item 45) to start the flow through the bearing supply tubes and adjust the regulator filter (item 43) to keep the pressure at 95-105 psig (655-724 kPa gage).
(10)Look for oil flow through the bearing damper. Record the flow rate from the flow computer (item 29).
(11)When the test is completed, turn off the air supply to the system or set the regulator filter (item 43) to zero and turn off the flow computer (item 29).
(12)Close the control valve (item 45).
(13)Disconnect the air line from the 11C3454   flow check fixture.
(14)Disconnect the 11C3454   flow check fixture from the oil supply tube (10-130) (SIN 442A4).
* * * FOR ALL
Figure 1016   (Sheet 1 ) Installation of the Flow Check Fixture, 11C3454, to the Oil Supply Tube
* * * FOR ALL
Figure 1016   (Sheet 2 ) Installation of the Flow Check Fixture, 11C3454, to the Oil Supply Tube
Subtask 72-25-00-710-003
M.Do an oil flow check of the IGB bearing assembly (03000) as follows:
NOTE:
There are two alternative procedures described in Subtask 72-25-00-710-004 (paragraph 3.H.) and Subtask 72-25-00-710-005 (paragraph 3.L.) for the oil flow check.
(1)Install the 11C4116   nozzle plug tool as follows:
CAUTION:
MAKE SURE THE ACTUATOR SCREWS ARE IN THE MAXIMUM RETRACT POSITION. THE PLUGS OF THE NOZZLE PLUG TOOL CAN DAMAGE THE BEVEL GEAR MATING SURFACES IF THE ACTUATOR SCREWS ARE NOT IN THE RETRACT POSITION.
(a)Turn the threaded bars (item 11) on the 11C4116   nozzle plug tool counterclockwise (CCW) to the retract position.
(b)Install the guide (item 12) into the IGB bevel gear from the aft side of the IGB bearing assembly. Engage the drive with two of the oil slots on the bevel gear.
(c)Install the 11C4116   nozzle plug tool on the guide (item 12).
(d)Turn the fixture to align the holes on the mating flange with the holes in the damper housing (03001).
(e)Torque the nut (item 23) on the 11C4116   nozzle plug tool to 50 lb in. (5.6 N.m). Torque the remaining five screws (item 19) to 50 lb in. (5.6 N.m).
CAUTION:
DO NOT APPLY TOO MUCH TORQUE TO THE ACTUATOR SCREWS. DAMAGE TO THE OIL NOZZLES CAN OCCUR.
(f)Turn the threaded bars (item 11) clockwise (CW) to engage the plugs with the oil nozzles in the IGB bearing assembly. Turn the threaded bars to apply sufficient pressure to seal the oil nozzles. Do not tighten the threaded bars too much.
(2)Install the 11C4128   oil check test protection on the forward flange of the fan hub frame assembly. Attach the 11C4128   oil check test protection with the screws (item 5).
(3)Install plugs (items 4 and 5) of the 11C4111   oil/air supply tube on the open ports of the oil supply manifold (442A1).
(4)Connect the tube (item 3) of the 11C4111   oil/air supply tube to the oil supply tube (442A0).
WARNING:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE AN INJURY OR CAN KILL YOU.
(5)Pressurize the oil supply tube with nitrogen gas at a pressure of 145-203 psig (1000-1400 kPa) to seat the piston rings (10-390) (SIN 030W0).
NOTE:
If necessary, tap the damper housing to help seating the piston rings (030W0).
(6)Connect the tube (item 3) of the 11C4111   oil/air supply tube to an oil supply.
(7)Turn the fan hub frame assembly in the 9429M60   roll-over stand or 11C4100   roll-over stand to the vertical position, forward end down, as follows. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(8)Flow check the IGB bearing assembly at a pressure of 95-105 psig (655-724 kPa). Use C02-019  engine oil or C02-023  engine oil at a temperature of 70-100°F (21-38°C). Collect and measure the oil that drains from the sump in 1 minute. Measure the amount with a graduated cylinder.
(9)Measure and record the flow rate (M2). Refer to Figure 1003.
(10)Calculate the leakage rate (M3) as follow:
(a)Subtract the oil flow rate (M1) from the oil flow rate M2 to calculate the leakage rate (M3).
M2 - M1 = M3
(b)Leakage rate must not be more than 0.05 gallons/minute (0.189 liters/minute).
Subtask 72-25-00-720-001
N.Do an air flow check of the sump as follows:
(1)Remove the plugs (items 4 and 5) and tube (item 3) of the 11C4111   oil/air supply tube and the 11C4116   nozzle plug tool.
WARNING:
STODDARD SOLVENT IS TOXIC. USE PERSONAL PROTECTION EQUIPMENT.
WARNING:
ISOPROPYL ALCOHOL IS TOXIC AND FLAMMABLE. USE PERSONAL PROTECTION EQUIPMENT. USE IN A WELL-VENTILATED AREA.
(2)Clean the IGB bearing assembly sump with a 50-50 blend of C04-014  denatured alcohol and C04-035  isopropyl alcohol, C04-002  Stoddard solvent, or C04-035  isopropyl alcohol as follows:
WARNING:
USE EYE PROTECTION WHEN YOU USE COMPRESSED AIR TO CLEAN, COOL, OR DRY PARTS OR TOOLS. PARTICLES CAN CAUSE AN INJURY TO YOUR EYES. DO NOT USE MORE THAN 30 PSIG (207 KPA). DO NOT POINT COMPRESSED AIR AT YOURSELF OR OTHER PERSONS.
(3)Blow clean, dry shop air through the oil supply tube (442A0) to remove any remaining solvent or contaminants.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(4)Apply C02-019  engine oil or C02-023  engine oil to the threads and mating surfaces of the oil tube (442B2).
(5)Connect the oil tube (442B2) to the fitting on the oil supply manifold (442A1) and the tube nipple (030S1) on the IGB bearing assembly (03000) at the 6:30 o'clock position, FLA.
(6)Triple torque the B-nuts on the oil tube at the oil supply manifold and tube nipple to 460-540 lb in. (52.0-61.0 N.m). Refer to TASK 70-51-00-400-004 (TIGHTENING PRACTICES AND TORQUE VALUES).
(7)Install the plugs (items 4 and 5) of the 11C4111   oil/air supply tube on the open ports of the oil supply manifold.
(8)Apply an inlet pressure of dry, filtered air to the oil tube at 9.5-10.5 psig (65.5-72.4 kPa gage).
(9)Measure and record the air flow as M4 on the record sheet. The air flow rate limits are 16.53-18.06 scfm (468.1-511.4 Lpm). Refer to Figure 1003.
(10)Remove the plugs (items 4 and 5) of the 11C4111   oil/air supply tube.
(11)Remove the 11C4128   oil check test protection from the forward flange of the fan hub frame assembly.
Subtask 72-25-00-440-065
O.Install the oil supply tube (10-130) (SIN 442A4) to the fan hub frame assembly. Refer to Figure 1015 and do as follows:
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(1)Apply C02-019  engine oil or C02-023  engine oil to the threads and mating surfaces of the oil supply tube.
(2)Install the oil supply tube in the fan hub frame assembly at the 8:00 o'clock position, FLA.
(3)Connect the end of the oil supply tube to the fitting on the oil supply manifold (442A1). Tighten the connectors hand tight.
(4)Attach the oil supply tube to the fan hub frame assembly with the machine bolts (bolts) (442F5) and self-locking nuts (nuts) (44240). Tighten the bolts (442F5) hand tight.
(5)Triple torque the B-nuts on the oil supply tube at the oil supply manifold to 262-308 lb in. (29.6-34.8 N.m). Refer to TASK 70-51-00-400-004 (TIGHTENING PRACTICES AND TORQUE VALUES).
(6)Torque the bolts (442F5) to 51-59 lb in. (5.8-6.7 N.m).
Subtask 72-25-00-440-020
CAUTION:
MAKE SURE THE WORK ENVIRONMENT IS CLEAN BEFORE YOU INSTALL THE NO. 3 BEARING REAR STATIONARY AIR/OIL SEAL. MAKE SURE WORK SURFACES AND TOOLS ARE CLEAN AND DO NOT HAVE CONTAMINATION. USE LATEX GLOVES WHEN YOU HANDLE PARTS. PROTECT PARTS FROM CONTAMINATION OR DAMAGE TO THE ENGINE CAN OCCUR.
CAUTION:
DO NOT PUT PARTS OR TOOLS ON TOP OF THE NO. 3 BEARING REAR STATIONARY AIR/OIL SEAL. DO NOT ALLOW PARTS OR TOOLS TO FALL ON THE NO. 3 BEARING REAR STATIONARY AIR/OIL SEAL OR DAMAGE CAN OCCUR.
P.Install the No. 3 bearing stationary seal (No. 3 bearing seal) (10-300) (SIN 03080) to the aft side of the fan hub frame assembly at the damper housing (10-320) (SIN 03001). Refer to Figure 1017 and do as follows:
(1)Turn the fan hub frame assembly in the 9429M60   roll-over stand or 11C4100   roll-over stand to the vertical position, forward end down, as follows. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
WARNING:
STODDARD SOLVENT IS TOXIC AND FLAMMABLE. USE PERSONAL PROTECTION EQUIPMENT.
(2)Clean all parts, tools, and work surfaces with C04-002   Stoddard solvent.
(3)Install the 11C4104   restraining tool as follows:
(a)Install the shaft (item 4) and flange (item 3) on the forward side of the IGB bearing assembly (03000). Engage the tabs on the flange (item 3) with the forward face on the ID of the horizontal bevel gear.
(b)Install the flange (item 2) on the shaft (item 4) and the aft side of the IGB bearing assembly. Engage the tabs on the flange (item 2) with the No. 3 bearing rotating seal.
(c)Attach the flange (item 2) to the shaft (item 4) with screws (item 7).
(4)Install the ramp (item 2) and the guide (item 3) of the 11C4121   carbon seal ramp tool on the No. 3 bearing rotating seal (03003) and the 11C4104   restraining tool.
(5)Attach the guide (item 3) to the 11C4104   restraining tool with the bushing (item 6) and nut (item 8) of the 11C4121   carbon seal ramp tool.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(6)Apply C02-019  engine oil or C02-023  engine oil to the preformed packing (10-310) (SIN 03054).
(7)Install the preformed packing (10-310) (SIN 03054) on the No. 3 bearing stationary seal. Refer to Figure 1017.
CAUTION:
DO NOT TRY TO INSTALL THE NO. 3 BEARING STATIONARY SEAL FULLY ON THE NO. 3 BEARING ROTATING SEAL AT THIS TIME. DAMAGE TO THE NO. 3 BEARING STATIONARY SEAL CAN OCCUR.
(8)Carefully install the No. 3 bearing stationary seal on the ramp (item 2) of the 11C4121   carbon seal ramp tool. Put the No. 3 bearing stationary seal on the ramp (item 2) only. Do not try to push the No. 3 bearing stationary seal on the No. 3 bearing rotating seal manually.
(9)Align the puller (item 5) with the guide pins (item 7) and threaded studs (item 4) of the 11C4121   carbon seal ramp tool and install the puller (item 5) on the guide (item 3). Carefully align the puller (item 5) with the No. 3 bearing stationary seal and put it in position next to the No. 3 bearing stationary seal.
(10)Install the two special nuts (item 9) on the threaded studs (item 4). Tighten the special nuts (item 9) until they touch the puller (item 5).
(11)Turn the two special nuts (item 9) the same amount at the same time to push the No. 3 bearing stationary seal on the No. 3 bearing rotating seal.
(12)Attach the No. 3 bearing stationary seal to the damper housing with three slave bolts and nuts. Install the slave bolts in the left hand hole at each of the three mounting tabs.
(13)Remove the 11C4121   carbon seal ramp tool.
(14)Remove the 11C4104   restraining tool.
* * * FOR ALL
Figure 1017   Installation of the No. 3 Bearing Rear Stationary and Rear Drain Seal to the Fan Hub Frame Assembly
Subtask 72-25-00-720-002
CAUTION:
MAKE SURE THE WORK ENVIRONMENT IS CLEAN BEFORE YOU DO THE AIR FLOW CHECK. MAKE SURE ALL WORK SURFACES AND TOOLS ARE CLEAN AND DO NOT HAVE CONTAMINATION. USE LATEX GLOVES WHEN YOU HANDLE PARTS. PROTECT PARTS FROM CONTAMINATION OR DAMAGE TO THE ENGINE CAN OCCUR.
Q.Do an air flow check of the No. 3 bearing stationary seal (03080) as follows:
WARNING:
STODDARD SOLVENT IS TOXIC AND FLAMMABLE. USE PERSONAL PROTECTION EQUIPMENT.
(1)Clean the 11C4122   carbon seal flow check tool with C04-002  Stoddard solvent.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(2)Apply C02-019  engine oil or C02-023  engine oil to the o-rings (items 3 and 4) on the flow check body (item 2).
(3)Install the flow check body (item 2) on the damper housing (03001) and attach with screws (item 5), washers (item 6), and nuts (item 7).
(4)Tighten the nuts (item 7) to 115 lb in. (13.0 N.m).
WARNING:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE AN INJURY OR CAN KILL YOU.
(5)Apply an inlet pressure of dry, filtered air to the fitting (item 8) at 9.5-10.5 psig (65.5-72.4 kPa gage).
(6)Measure and record the inlet pressure as P5 and the air flow as M5 on the record sheet. The air flow rate limits must not be more than 1.2 scfm (34 Lpm) at 70°F (21°C). Refer to Figure 1010.
(7)Remove the 11C4122   carbon seal flow check tool.
Subtask 72-25-00-440-066
R.Install the oil scavenge tube (scavenge tube) (05-160 , 79-22-20) (SIN 451A1) into the fan hub frame assembly. Refer to Figure 1018 and do as follows:
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(1)Apply C02-019  engine oil or C02-023  engine oil to the performed packing (05-170 , 79-22-20) (SIN 451N1) and the lead-in chamfer of the scavenge tube.
(2)Install the performed packings (05-170 , 79-22-20) (SIN 451N1) to the packing grooves in the scavenge tube.
(3)Apply C02-058  graphite to the washer surface and the threads of the machine bolts (bolts) (451F0).
NOTE:
Use a minimum quantity of lubricant necessary for assembly. After assembly, remove unwanted lubricant with a clean cloth.
(4)Install the scavenge tube in the strut on the aft side of the fan hub frame assembly at the 6:00 o'clock position.
(5)Attach the scavenge tube to the fan hub frame assembly with bolts (451F0).
(6)Torque the bolts to 106-124 lb in. (12.0-14.0 N.m).
* * * FOR ALL
Figure 1018   Installation of the Scavenge Tube
Subtask 72-25-00-440-067
S.Install the radial shaft (radial drive shaft) (01-130) (SIN 03100) in the fan hub frame assembly. Refer to Figure 1019 and do as follows:
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(1)Apply C02-019  engine oil or C02-023  engine oil to the splines of the radial drive shaft.
(2)Install the radial drive shaft in the fan hub frame assembly opening at the 6:00 o'clock position aft looking forward. Engage the splines of the reduced radius end of the radial drive shaft into the splines of the IGB bearing assembly (03000).
Subtask 72-25-00-440-068
T.Install the transfer gearbox (TGB) (01-010) (SIN 03200) in the fan hub frame assembly. Refer to Figure 1019 and do as follows:
(1)Alternative Procedure Available. Install the 11C4106   TGB lifting tool on the TGB as follows. Refer to Figure 1020.
(a)Align the welded assembly (item 2) with the boltholes on the aft side of the TGB.
(b)Attach the welded assembly (item 2) to the TGB with capscrews (item 4)
Subtask 72-25-00-440-072
(1).A.Alternative Procedure. Install the 11C3235   TGB lifting tool on the TGB as follows. Refer to Figure 1021.
(a)Align the lift fixture (item 2) with the boltholes on the aft side of the TGB.
(b)Attach the lift fixture (item 2) to the TGB with capscrews (item 3).
(c)Tighten the capscrews (item 3) to 60-180 lb in. (6.8-20.3 N.m).
Subtask 72-25-00-440-073
(2)Alternative Procedure Available. Remove the TGB from the 11C3336   TGB support fixture as follows. Refer to Figure 1022.
WARNING:
ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.
(a)Attach a hoist to the welded assembly (item 2) of the 11C4106   TGB lifting tool.
(b)Loosen the winch bar of the 11C3336   TGB support fixture that attaches the strap (item 9).
(c)Lift the TGB (03200) from the 11C3336   TGB support fixture.
Subtask 72-25-00-440-074
(2).A.Alternative Procedure. Remove the TGB from the 11C3336   TGB support fixture as follows. Refer to Figure 1023.
WARNING:
ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.
(a)Attach a hoist to the lift fixture (item 2) of the 11C3235   TGB lifting tool.
(b)Loosen the winch bar of the 11C3336   TGB support fixture that attaches the strap (item 9).
(c)Lift the TGB (03200) from the 11C3336   TGB support fixture.
Subtask 72-25-00-440-075
(3)Put the TGB in position on the fan hub frame assembly at the 6:00 o'clock position and engage the splines of the TGB with the splines of the radial drive shaft. Push the TGB against the fan hub frame assembly.
(4)Attach the TGB to the fan hub frame assembly as follows:
(a)Apply C02-058  graphite to the threads and washer surfaces of the bolts (03221).
NOTE:
Use the minimum quantity of lubricant necessary for assembly. After assembly, remove unwanted lubricant with a clean cloth.
(b)Install the flanged pins (03220) through the flange of the TGB and into the inserts on the fan hub frame assembly at the 3:00 and 9:00 o'clock positions of the TGB.
(c)Attach the flanged pins (03220) with machine bolts (bolts) (03221).
(d)Install the bolts (03221) and washers (03230) in the remaining holes in the flange at 10 locations.
(e)Torque the bolts (03221) in a criss-cross pattern to 106-124 lb in. (12.0-14.0 N.m).
(5)Remove the 11C4106   TGB lifting tool or the 11C3235   TGB lifting tool from the TGB.
(6)Make sure that the TGB is fully installed against the fan hub frame assembly. Use a 0.001 inch (0.03 mm) shim between the flanges of the TGB and fan hub frame assembly.
(7)Install three axial link brackets (brackets) (03814) on the fan hub frame assembly. Attach the brackets with machine bolts (bolts) (0382B).
(8)Torque the bolts (0382B) to 175-205 lb in. (19.8-23.2 N.m).
* * * FOR ALL
Figure 1019   (Sheet 1 ) Installation of the Radial Drive Shaft and TGB in the Fan Hub Frame Assembly
* * * FOR ALL
Figure 1019   (Sheet 2 ) Installation of the Radial Drive Shaft and TGB in Fan Hub Frame Assembly
* * * FOR ALL
Figure 1020   Installation of the TGB lifting tool, 11C4106, on the TGB
* * * FOR ALL
Figure 1021   Installation of the TGB Lifting Tool, 11C3235, on the TGB
* * * FOR ALL
Figure 1022   Removal of the TGB from the TGB Support Fixture, 11C3336
* * * FOR ALL
Figure 1023   Removal of the TGB from the TGB Support Fixture, 11C3336
Subtask 72-25-00-440-069
U.Install the fan speed sensor guide (fan sensor guide) (10-040) (SIN 654A1) and the N1 sensor liner (10-020) (SIN 65401) to the fan hub frame assembly. Refer to Figure 1024 and do as follows:
(1)Turn the fan hub frame assembly in the 9429M60   roll-over stand or 11C4100   roll-over stand to the vertical position, forward end up, as follows. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
WARNING:
STODDARD SOLVENT IS TOXIC AND FLAMMABLE. USE PERSONAL PROTECTION EQUIPMENT.
(2)Clean the flange mating faces of the fan sensor guide, the N1 sensor liner, and the fan hub frame assembly port at the 3:30 o'clock position, FLA, with C04-002  Stoddard solvent.
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
CAUTION:
DO NOT LET OIL TOUCH PAINTED SURFACES. OIL WILL SOFTEN PAINT. CLEAN SPILLS IMMEDIATELY.
(3)Apply C02-019  engine oil or C02-023  engine oil to the threads and washer surfaces of the machine bolts (bolts) (654F0).
NOTE:
Use a minimum quantity of lubricant necessary for assembly. After assembly, remove unwanted lubricant with a clean cloth.
CAUTION:
DO NOT LET OIL TOUCH PAINTED SURFACES. OIL WILL SOFTEN PAINT. CLEAN SPILLS IMMEDIATELY.
(4)Apply C02-019  engine oil or C02-023  engine oil to the preformed packings (10-030) (SIN 654N1) and (10-050) (SIN 654N0) and to the lead in groove of the fan sensor guide.
(5)Install the preformed packing (10-050) (SIN 654N0) in the groove of the fan sensor guide.
(6)Install the sensor guide into fan frame port and align the boltholes.
(7)Install the performed packing (10-030) (SIN 654N1) in the groove on the flange on the N1 sensor liner.
(8)Install the N1 sensor liner over the fan sensor guide and align the boltholes.
(9)Attach the N1 sensor liner and sensor guide to the fan hub frame assembly with the bolts (654F0). Torque the bolts (654F0) to 16-124 lb in. (12.0-14.0 N.m).
Subtask 72-25-00-220-014
(10)Make sure that the N1 sensor liner and fan sensor guide are fully installed with a 0.001 inch (0.03 mm) shim.
* * * FOR ALL
Figure 1024   Installation of the N1 Sensor Liner and Guide
Subtask 72-25-00-720-004
V.Do a sump cavity pressure check. Refer to Figure 1025 and do as follows:
(1)Install the 11C4831   sump cavity pressure check tool to seal the sump cavity as follows:
(a)Install the front welded plate (item 2) assembly on the forward flange of the fan hub frame assembly. Attach the front welded plate with bolts (item 27) at 24 equally-spaced locations.
(b)Install the welded plug (item 6) in the drain hole at the 6:00 o'clock position on the fan hub frame assembly. Attach the welded plug (item 6) with the screw (item 31).
(c)Install the rear plate (item 4) on the aft flange of the damper housing (10-320) (SIN 03001). Install the rear plate with the o-ring (item 43) onto the central shaft (item 3) installed on the front welded plate (item 2). Insert the ball lock pins (item 35) through the holes in rear plate (item 4) and in the flange of the damper housing (10-320) (SIN 03001).
(d)Install the special nut (item 23) on the central shaft (item 3). Torque the special nut to 152 lb in. (17.2 Nm).
(e)Install the safety guard (item 24) onto the rear plate (item 4). Torque the safety guard to 437 lb in. (49.3 Nm).
(f)Install a plug in the damper housing drain port at the 6:30 o'clock position on the damper housing (10-320) (SIN 03001).
(g)Install the plate (item 10) on the fan hub frame assembly vent pad at the 12:00 o'clock position. Attach the plate with screws (item 19).
(h)Install the plate (item 12) on the fan hub frame assembly vent pad at the 12:00 o'clock position. Attach the plate with screws (item 19).
(i)Install the TGB plate (item 7) on the aft flange of the TGB (01-010) (SIN 03200). Attach the plate with screws (item 19).
(j)Install the caps (item 32) on the ports on the TGB (01-010) (SIN 03200).
(k)Install the plate (item 8) on the TGB scavenge pad at the 6:00 o'clock position on the TGB (01-010) (SIN 03200). Attach the plate with screws (item 19).
(l)Install the plate (item 14) on the scavenge tube (05-160 , 79-22-20) (SIN 451A1). Attach the plate with screws (item 19).
(m)Install the plate (item 16) on the N1 sensor pad at the 7:00 o'clock position of the fan hub frame assembly. Attach the plate with screws (item 19).
(n)Install the plug (item 33) on the tube nipple at the 7:00 o'clock position of the fan hub frame assembly.
WARNING:
BE CAREFUL WHEN YOU APPLY PRESSURE. MAKE SURE YOU DO NOT USE MORE THAN THE MAXIMUM PRESSURE. ALWAYS USE SAFETY SHIELDS DURING THE TEST. RELEASE PRESSURE BEFORE YOU DISCONNECT THE LINES AND FITTINGS. A MALFUNCTION CAN CAUSE AN INJURY OR CAN KILL YOU.
(2)Apply an inlet pressure of dry, filtered air to the oil supply tube (01-070) (SIN 442A0) at 14.5-15.5 psig (100.0-106.9 kPa gage).
(3)Measure and record the maximum pressure after 3 minutes. The maximum pressure drop permitted is 0.5 psig (3.4 kPa). Refer to Figure 1003.
(4)Remove the 11C4831   sump cavity pressure check tool and the remaining caps and plugs.
* * * FOR ALL
Figure 1025   (Sheet 1 ) Installation of the Sump Cavity Pressure Check Tool, 11C4831
* * * FOR ALL
Figure 1025   (Sheet 2 ) Installation of the Sump Cavity Pressure Check Tool, 11C4831
* * * FOR ALL
Figure 1025   (Sheet 3 ) Installation of the Sump Cavity Pressure Check Tool, 11C4831
* * * FOR ALL
Figure 1025   (Sheet 4 ) Installation of the Sump Cavity Pressure Check Tool, 11C4831
* * * FOR ALL
Figure 1025   (Sheet 5 ) Installation of the Sump Cavity Pressure Check Tool, 11C4831
Subtask 72-25-00-440-060
W.Install the No. 3 deflector (seal drain) (10-270) (SIN 030AA) to the aft side of the fan hub frame assembly at the No. 3 bearing seal (10-300) (SIN 03080). Refer to Figure 1026 and do as follows:
(1)Turn the fan hub frame assembly in the 9429M60   roll-over stand or 11C4100   roll-over stand to the vertical position, forward end down, as follows. Refer to Subtask 72-25-00-440-063 (paragraph 3.C.).
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(2)Apply C02-019  engine oil or C02-023  engine oil to the preformed packings (10-280) (SIN 030N6) and (10-290) (SIN 030N0).
(3)Install the performed packing (10-290) (SIN 030N0) in the groove on the No. 3 bearing seal.
(4)Install the performed packing (10-280) (SIN 030N6) in the groove on the aft end of the tube of the seal drain.
(5)Install the seal drain on the No. 3 bearing seal.
(6)Make sure that the tube of the seal drain is correctly connected to the jumper tube adapter (03070) in the fan hub frame assembly on the forward side.
(7)Attach the seal drain with machine bolts (bolts) (030F1) and self-locking nuts (nuts) (030K4).
(8)Torque the bolts (030F1) to 106-124 lb in. (12.0-14.0 N.m).
* * * FOR ALL
Figure 1026   Installation of the No. 3 Bearing Rear Shroud Seal Drain
Subtask 72-25-00-440-021
X.Assemble the forward section of the IGV shroud (071B0) to the No. 3 bearing stationary seal (stationary seal) (03002) with the 11C4109   IGV seating/removal tool as follows:
(1)Make sure that the forward section of the IGV shroud and aft section of the IGV shroud are a matched set. Both parts are machined as a set for the IGV shroud. Refer to Figure 1027.
(2)Install the pusher ring (item 5) of the 11C4109   IGV seating/removal tool on the cage (item 4). Refer to Figure 1028.
(3)Install the stationary seal on the support (item 2) with the forward flange down. Align the dowel pin (item 6) with the hole in the stationary seal.
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLD PARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
(4)Increase the temperature of the stationary seal forward flange to 122°F (50.0°C).
(5)Lower the forward section of the IGV shroud to the stationary seal and align the dowel pin (item 6) with the alignment hole in the IGV shroud forward section.
(6)Put the plate (item 7) on the forward section of the IGV shroud.
(7)Install the cage (item 4) on the central shaft (item 3) and the IGV shroud.
(8)Install the washer (item 11) and the hex nut (item 10) on the central shaft (item 3).
(9)Torque the hex nut (item 10) to 50 lb in. (5.6 N.m) to fully install the forward section of the IGV shroud on the stationary seal.
(10)Let the parts return to ambient temperature.
(11)Remove the hex nut (item 10), washer (item 11), cage (item 4), and plate (item 7).
* * * FOR ALL
Figure 1027   IGV Shroud Assembly
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Figure 1028   Assembly of the IGV Shroud to the Stationary Seal
Subtask 72-25-00-440-022
Y.Install the seal/shroud assembly on the fan hub frame assembly as follows:
NOTE:
The seal/shroud assembly includes the stationary seal (03002) and the forward section of the IGV shroud (071B0).
WARNING:
STODDARD SOLVENT IS TOXIC AND FLAMMABLE. USE PERSONAL PROTECTION EQUIPMENT.
(1)Clean the mating flange surfaces of the fan hub frame with C04-002  Stoddard solvent.
(2)Install the 11C4123   heating shroud to the forward flange of the fan hub frame assembly with the cap screws (item 5). Refer to Figure 1029.
WARNING:
USE THERMAL GLOVES WHEN YOU MOVE OR TOUCH HOT OR COLD PARTS. HOT OR COLD PARTS CAN CAUSE INJURY.
(3)Increase the temperature of the forward flange of the fan hub frame to 194°F (90.0°C) with the 11C4123   heating shroud.
WARNING:
ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.
(4)Remove the seal/shroud assembly from the support (item 2) of the 11C4109   IGV seating/removal tool and put it in position on the fan hub frame assembly.
(5)Remove the 11C4123   heating shroud from the forward flange of the fan hub frame assembly.
(6)Align the seal/shroud assembly with the alignment pin in the fan hub frame. Refer to Figure 1030.
(7)Attach the seal/shroud assembly with four slave bolts and washers at equally spaced locations and tighten.
(8)Let the parts return to ambient temperature.
(9)Remove the slave bolts.
(10)Make sure that the stationary seal is fully installed. Use a 0.001 inch (0.03 mm) shim between the stationary seal and the fan hub frame assembly.
* * * FOR ALL
Figure 1029   Installation of the Heating Shroud, 11C4123
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Figure 1030   Installation of the Stationary Seal and Forward IGV Shroud
Subtask 72-25-00-440-023
Z.Install the inlet guide vanes (IGVs) (05-110) (SIN 072A0) into the fan hub frame assembly. Refer to Figure 1031 and do as follows:
(1)Install an IGV shoulder washer (washer) (05-150) (SIN 071J2) on the outboard trunnion of one IGV.
(2)Install an IGV inner bushing (05-140) (SIN 071T5) on the inboard trunnion of the IGV.
(3)Install the outboard trunnion of the IGV through the fan hub frame assembly.
(4)Put the inboard trunnion with the IGV inner bushing in the slot of the forward IGV shroud (071B0). Make sure that the FWD mark on the IGV is forward.
(5)Install the IGV outer bushing (05-040) (SIN 071T0) through the fan hub frame assembly and on the outer IGV trunnion. The bushing must be fully against the fan hub frame assembly.
(6)Do Subtask 72-25-00-440-023 (paragraph 3.X.(1)) thru Subtask 72-25-00-440-023 (paragraph 3.X.(5)) for the remaining 30 IGVs.
(7)Make sure that the vane surfaces of the IGVs do not touch the fan hub frame assembly in normal angular displacement (rotation of the airfoil).
(8)Put the aft section of the IGV shroud against the forward section of the IGV shroud.
(9)Make sure that the IGV inner trunnions and the IGV inner bushings (05-140) (SIN 071T5) are correctly installed in the IGV shroud.
(10)Attach the IGV shroud and the stationary seal (03002) to the fan hub frame assembly with washers (071J3) and machine bolts (bolts) (071F0).
(11)Torque the bolts in a criss-cross pattern to 106-124 lb in. (12.0-14.0 N.m).
* * * FOR ALL
Figure 1031   Installation of the IGVs to the Fan Hub Frame assembly
Subtask 72-25-00-440-025
AA.Install the IGV adjusting pad screws and the IGV guide pads to the upper and lower IGV actuation rings (071A0, 071A5) as follows. Refer to Figure 1032.
(1)From the inboard side of the actuating ring, install the threaded end of the IGV guide pads into the actuating ring. Turn the IGV guide pad CW in the actuating ring until it turns freely.
NOTE:
There are five IGV guide pads for each ring segment.
NOTE:
Make sure the IGV guide pad always turns freely in the actuating ring.
(2)Install the nut on the IGV guide pad on the outboard side of the actuating ring.
(3)Adjust the IGV guide pads in the actuating ring to dimension A as follows. Turn the IGV guide pad CCW to increase dimension A and CW to decrease dimension A.
(a)Dimension A: 0.323-0.333 inch (8.20-8.46 mm).
(4)Hold the threaded end of the IGV guide pads with a hex-head wrench and torque the nut to 60.0-70.0 lb in. (6.78-7.91 N.m).
NOTE:
While you do this step, do not let the IGV guide pad turn. This will cause dimension A to change.
* * * FOR ALL
Figure 1032   (Sheet 1 ) Installation of the IGV Guide Pads
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Figure 1032   (Sheet 2 ) Installation of the IGV Guide Pads
Subtask 72-25-00-440-026
AB.Install the actuating ring (05-080) (SIN 071A0) on the fan hub frame assembly. Refer to Figure 1033 and do as follows:
(1)Install the lever pin bushings (05-030) (SIN 071TA) in their correct locations in the actuating ring.
(2)Put the actuating ring on the fan hub frame assembly. Make sure that the AFT UPPER IGV mark on the upper actuating ring is aft.
(3)Align the upper actuating ring on the fan hub frame assembly so that the last hole on the right side of the upper actuating ring (ALF) is immediately below the 3:00 o'clock position on the fan hub frame assembly.
Subtask 72-25-00-440-027
AC.Install the IGV lever (IGV lever arms) (071D0) on the upper actuating ring (071A0) and IGVs (072A0) as follows:
(1)Make sure that the IGV outer bushings (05-040) (SIN 071T0) are installed in the fan hub frame assembly at each IGV.
(2)Install an IGV lever arm on each of the IGV outer trunnion studs. Engage the pin of the IGV lever arm in the lever pin bushing (05-030) (SIN 071TA) installed in the upper actuating ring. Make sure that the IGV lever arm is correctly installed with the IGV trunnion and the upper actuating ring.
(3)Install the nut vanes (nuts) (071K1) on the IGV stud.
(4)Torque the nuts to 51-59 lb in. (5.8-6.7 N.m).
Subtask 72-25-00-440-028
AD.Install the ring segment (lower actuating ring) (05-090) (SIN 071A5) on the fan hub frame assembly as follows.
(1)Install the lever pin bushings (05-030) (SIN 071TA) in lever pin holes in the actuating ring.
(2)Put the lower actuating ring on the fun hub frame assembly. Make sure that the AFT LOWER IGV mark on the lower actuating ring is aft.
(3)Align the lower actuating ring on the fan hub frame assembly so that the last hole on the left side of the lower actuating ring (ALF) is immediately above 9:00 o'clock position on the fan hub frame assembly.
Subtask 72-25-00-440-029
AE.Install the IGV lever arms (071D0) one at a time to each IGV (072A0) and lower actuating ring (071A5) as follows:
(1)Make sure that the IGV outer bushings (05-040) (SIN 071T0) are installed in the fan hub frame assembly at each IGV.
(2)Install an IGV arm to the IGV trunnion stud and in the level pin bushing (05-030) (SIN 071TA) of the actuating ring. Make sure that the IGV arm is installed with the IGV trunnion and the actuating ring.
(3)Install the nuts (071K1) on the IGV stud.
(4)Torque the nuts to 51-59 lb in. (5.8-6.7 N.m).
Subtask 72-25-00-440-030
AF.Install the IGV bridges (071E0) on the upper and lower actuating rings (071A0, 071A5) as follows:
WARNING:
LUBRICATING OILS MAY CAUSE SKIN, EYE AND RESPIRATORY IRRITATION WITH PROLONGED OR REPEATED CONTACT. USE PROPER PERSONAL PROTECTIVE EQUIPMENT TO PREVENT SKIN AND EYE CONTACT. IF EYE OR SKIN CONTACT OCCURS FLUSH EYES WITH WATER AND/OR WASH SKIN THOROUGHLY WITH SOAP AND WATER.
(1)Apply C02-019  engine oil or C02-023  engine oil to the threads and washer surfaces of the machine bolts (bolts) (075F1).
(2)Install the alignment pins (075V0) in the IGV bridges.
(3)Install an IGV bridge at the 9:00 o'clock position on the upper and lower actuating rings. Align the alignment pins (075V0) with the holes in the upper and lower actuating rings. Make sure the AFT mark on the IGV bridge is aft.
(4)Attach the IGV bridge with bolts (075F1).
(5)Install an IGV bridge (071E0) at the 3:00 o'clock position on the upper and lower actuating rings (071A0, 071A5). Align the alignment pins (075V0) with the holes in the upper and lower actuating rings. Make sure the AFT mark on the IGV bridge is aft.
(6)Attach the IGV bridge with bolts (075F1).
(7)Torque the bolts (075F1) to 235-275 lb in. (26.6-31.1 N.m).
(8)Make sure that the IGVs are installed in the correct position and that they can be manually move.
(9)Use the 11C4125   IGV angle check tool to make sure the IGVs move to the fully open and fully closed positions.
(10)Safety the bolts (075F1) with C10-071  safety wire or C10-143  safety cable.
Subtask 72-25-00-430-001
AG.Measure and record the rub button gap at 10 locations between the upper actuating ring (05-080) (SIN 071A0), lower actuating ring (05-090) (SIN 071A5), the fan hub frame. Refer to Figure 1034 and do as follows:
(1)Move the upper/lower actuating rings (071A0, 071A5) to the zero nominal position.
(2)Measure and record the initial upper/lower actuating ring rub button gap at 10 locations.
(3)Put a 0.007 inch (0.18 mm) shim on the fan hub frame case under the rub buttons at 10 locations. Use tape to hold in position.
(4)If necessary, move the upper/lower actuating rings to an offset position to adjust the rub buttons.
(5)Loosen the nut on the upper/lower actuating rings.
(6)Adjust the actuating ring rub button gap to 0.004-0.010 inch (0.10-0.25 mm).
(7)Torque the rub button nut to 60-70 lb in. (6.8-7.9 N.m).
(8)Remove the 0.007 inch (0.18 mm) shim and tape, if necessary, from the fan hub frame case under the rub buttons.
(9)Measure and record the rub button gap at 10 locations on the upper/lower actuating rings. Make sure the rub button gap is 0.004-0.010 inch (0.10-0.25 mm).
* * * FOR ALL
Figure 1033   (Sheet 1 ) Assembly of the Actuation Rings, IGV Arms, and IGV Bridges
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Figure 1033   (Sheet 2 ) Assembly of the Actuation Rings, IGV Arms, and IGV Bridges
* * * FOR ALL
Figure 1034   Upper/Lower IGV Actuating Ring Rub Button Gap Measurement