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Copyright (2014) General Electric Company, U.S.A.
TRANSMITTAL INFORMATION
REVISION 1 TO SERVICE BULLETIN 72-0083
Revision 1 is issued to update paragraphs 2., MATERIAL INFORMATION
and 3., ACCOMPLISHMENT INSTRUCTIONS
.
The original was issued July 26, 2012. Revision bars in the left margin identify changes.
1.PLANNING INFORMATION
A.Effectivity
* * * FOR GEnx-1B54, -1B58, -1B64, -1B67, -1B70
This Service Bulletin is applicable to all GEnx-1B engines.
The core wash kit P/N 738L340G01 is affected by this Service Bulletin.
B.Description
This Service Bulletin provides instructions to install the core wash kit and releases new hardware for the core water wash system.
C.Compliance
Category 7
GE recommends that you do this Service Bulletin at customer's convenience.
NOTE:
This Service Bulletin can be accomplished on wing or in shop.
D.Concurrent Requirements
None.
E.Reason
(1)Objective:
To introduce new parts.
(2)Condition:
To ease maintenance activity while performing core water wash.
(3)Cause:
The existing core water wash procedure requires additional water lances to hook around the booster inlet.
(4)Improvement:
The new core water wash system introduces water directly into the core via injectors mounted on the fan hub frame.
(5)Substantiation:
Substantiation is by comparative analysis and test.
F.Approval
This Service Bulletin has been reviewed by the FAA and the repair(s) and modification(s) herein comply with the applicable Federal Aviation Regulations and are FAA APPROVED for installation in the model(s) listed in this Service Bulletin.
G.Manpower
After you get access to the core and fan hub frame, you will need approximately 14 man-hours for each engine.
H.Weight and Balance
Weight and balance are not changed.
I.References (Use the latest version of these documents)
GEK 9250, Commercial Engine Standard Practices Manual (SPM)
GEK 112851, GEnx-1B Engine Manual (EM)
GEK 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR)
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
GEnx-1B Boeing 787 Aircraft Maintenance Manual (AMM)
NOTE:
The reference documents listed below are for the engine manufacturer's internal use only:
 
CID: 547448, 547811
J.Publications Affected
GEK 112851, GEnx-1B Engine Manual (EM)
GEK 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR)
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
GEnx-1B Boeing 787 Aircraft Maintenance Manual (AMM)
K.Interchangeability
Interchangeable as a set.
L.Software Accomplishment Summary
Not applicable.
2.MATERIAL INFORMATION
A.Material - Price and Availability
(1)Parts necessary to do this Service Bulletin:
 
Part Number
Qty/ Eng
Part Name
Unit ($) Price
Pkg Qty
Lead Time Days
 
738L340G01
(1)
Core Wash Kit
21,746.00
(1)
30
NOTE:
Prices are provided for planning purposes and are subject to change.
(2)Other Spare Parts:
 
Part Number
Qty/ Eng
Part Name
Unit ($) Price
Pkg Qty
Lead Time Days
 
2431M34G01
(1)
Tube, Core Wash
2,739.00
(1)
Quote
 
2264M47G01
(1)
Manifold, Core Wash
6,531.00
(1)
Quote
 
2352M93G01
(1)
Tube, Core Wash Water
2.097.00
(1)
Quote
 
2320M64G01
(1)
Manifold, Core Wash
3,614.00
(1)
Quote
 
2255M94P02
(4)
Nozzle, Core Wash
1,114.00
(1)
30
 
2370M85G01
(1)
Bracket, Support
157.00
(1)
Quote
 
MS9556-06*
(5)
Bolt, Machine
NP
(-)
--
 
2256M64P01
(4)
Seal, Water Wash
2.35
(1)
5
 
J1432P06
(7)
Clamp, Cushioned Loop
57.50
(1)
5
 
J1432P08
(2)
Clamp, Cushioned Loop
57.00
(1)
5
 
2317M34G01
(1)
Bracket, Support
169.25
(1)
Quote
 
2317M35G01
(3)
Bracket, Support
250.00
(1)
30
 
2405M14P01
(1)
Spacer
42.00
(1)
30
 
R413P39
(1)
Nut, Plain-Hex
141.75
(5)
10
 
AS5406R08H*
(1)
Coupling
NP
(-)
--
 
J1432P06
(7)
Clamp, Cushioned Loop
57.50
(1)
5
 
J1432P08
(2)
Clamp, Cushioned Loop
57.00
(1)
5
 
2403M57P01
(1)
Lanyard
292.50
(1)
5
 
736L680G01
(AR)
Kit, Safety Cable
5.25
(50)
5
 
AN929A8K*
(1)
Cap Assy
NP
(-)
--
*Part not supplied by GE Engine Services Distribution L.L.C. Procure through local purchase.
NP = Not Provisioned
NOTE:
Prices are provided for planning purposes and are subject to change.
(3)Consumables:
 
Code Number
Description
 
C02-058
Compound, Thread Lubricating (thread lubricating)
 
C10-143
Safety Cable Assembly (safety cable)
B.Industry Support Information
Contact your Customer Support Manager (CSM) for industry Support information.
C.Configuration Chart
 
New Part Number
Qty/ Eng
Part Name
Old Part Number/ IPC Location
Qty/ Eng
Op Code
Chg/ Sprt Code
 
GEnx-1B67G01/ G02
(X)
Model List
GEnx-1B67G01/ G02
(X)
RM
-/-
 
.738L340G01
10-001, 71-00-01
(1)
Core Wash Kit
(SIN 7800A)
--
(-)
AD
5/-
 
..2431M34G01
10-010, 71-00-01
(1)
Tube, Core Wash
(SIN 78001)
--
(-)
AD
5/-
 
..2264M47G01
10-020, 71-00-01
(1)
Manifold, Core Wash
(SIN 78002)
--
(-)
AD
5/-
 
..2352M93G01
10-030, 71-00-01
(1)
Tube, Core Wash Water
(SIN 78003)
--
(-)
AD
5/-
 
..2320M64G01
10-040, 71-00-01
(1)
Manifold, Core Wash
(SIN 78004)
--
(-)
AD
5/-
 
..2255M94P02
10-050, 71-00-01
(4)
Nozzle, Core Wash
(SIN 78005)
--
(-)
AD
5/-
 
..2370M85G01
10-060, 71-00-01
(1)
Bracket, Support
(SIN 78012)
--
(-)
AD
5/-
 
..MS9556-06
10-070, 71-00-01
(5)
Bolt, Machine
(SIN 78021)
--
(-)
AD
5/-
 
..2256M64P01
10-080, 71-00-01
(4)
Seal, Water Wash
(SIN 78070)
--
(-)
AD
5/-
 
..J1432P06
10-090, 71-00-01
(7)
Clamp, Cushioned Loop
(SIN 78081)
--
(-)
AD
5/-
 
..J1432P08
10-100, 71-00-01
(2)
Clamp, Cushioned Loop
(SIN 78082)
--
(-)
AD
5/-
 
..2317M34G01
10-110, 71-00-01
(1)
Bracket, Support
(SIN 78010)
--
(-)
AD
5/-
 
..2317M35G01
10-120, 71-00-01
(3)
Bracket, Support
(SIN 78011)
--
(-)
AD
5/-
 
..2405M14P01
10-130, 71-00-01
(1)
Spacer
(SIN 78030)
--
(-)
AD
5/-
 
..R413P39
10-140, 71-00-01
(1)
Nut
(SIN 78040)
--
(-)
AD
5/-
 
..AS5406R08H
10-150, 71-00-01
(1)
Coupling
(SIN 78060)
--
(-)
AD
5/-
 
..AN929A8K
10-160, 71-00-01
(1)
Cap, Tube
(SIN 78090)
--
(-)
AD
5/-
 
..2403M57P01
10-170, 71-00-01
(1)
Lanyard
(SIN 78091)
--
(-)
AD
5/-
Operation Codes
AD=Add
RM=Remains
Change Code
5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability.
Support Code
None.
D.Parts Disposition
None.
E.Tooling - Price and Availability
None.
3.ACCOMPLISHMENT INSTRUCTIONS
A.General
 NOTE:
This Service Bulletin will need hardware removal to get access. For example, the installation of the manifold into the fan hub frame will need the thrust links to be removed from the fan hub frame clevis.
(1)Remove the plug nozzles (01-140, 72-25-00, Figure 1) from the fan hub frame (01-490A, 72-26-00) as follows:
(a)Loosen and remove the eight machine bolts (01-030, 72-25-00).
(b)Remove the four plug nozzles (01-140).
(c)Remove the four water wash seals (01-120).
NOTE:
If multiple seals are installed, retain the count and location for reinstallation with water wash nozzles.
(2)Install the core wash nozzles (1, Figure 2) on the fan hub frame (01-490A, 72-26-00) as follows:
(a)Install the water wash seals (01-120, 72-25-00) removed in step 3.A.(1)(c) on the core wash nozzles (1).
(b)Apply C02-058 thread lubricating to the eight machine bolts (01-030, 72-25-00).
(c)Attach the remaining three core wash nozzles (1) on the fan hub frame (01-490A, 72-26-00) with the six machine bolts (01-030, 72-25-00).
(d)Torque all the machine bolts (01-030) to 51-59 lb in. (5.8-6.7 N.m).
(3)Install the water wash support brackets as follows:
(a)Remove the machine bolts (01-020, 72-25-00, Figure 3).
(b)Apply C02-058 thread lubricating to the machine bolts (01-020).
(c)Attach the support bracket (1) with two machine bolts (01-020) at the 1:00, 2:00, and 8:00 o'clock position aft looking forward (ALF) on the fan hub frame (01-490A, 72-26-00).
(d)Attach the support bracket (2, Figure 4) with two machine bolts (01-020, 72-25-00, Figure 3) at the 4:00 o'clock position ALF on the fan hub frame (01-490A, 72-26-00).
(e)Attach the support bracket (2) with two machine bolts (01-020, 72-25-00) at the 5:00 o'clock position ALF on the fan hub frame (01-490A, 72-26-00).
(f)Torque the machine bolts (01-020, 72-25-00) to 32-38 lb in. (3.6-4.3 N.m).
(4)Install the core wash manifold (9, Figure 4) on the fan hub frame (01-490A, 72-26-00) as follows:
(a)Connect the core wash manifold (9) to two core wash nozzles (6), tighten B-nuts hand tight.
(b)Attach the core wash manifold (9) to the support brackets (1) and (2) with three cushioned loop clamps (5) and three machine bolts (7).
(c)Torque the machine bolts (7) to 32-38 lb in. (3.6-4.3 N.m).
(d)Torque the B-nuts of the core wash manifold (9) to 262-308 lb in. (29.6-34.8 N.m).
(5)Install the core wash manifold (9, Figure 3) on the fan hub frame (01-490A, 72-26-00) as follows:
(a)Connect the core wash manifold (9) to the core wash manifold (4) and to the core wash nozzle (6), tighten B-nuts hand tight.
(b)Attach the core wash manifold (9) to the support bracket (2), support bracket (25-450, 72-00-02), and support bracket (25-430, 72-00-02) with three cushioned loop clamps (5) and the machine bolts (7).
(c)Torque the machine bolts (7) to 32-38 lb in. (3.6-4.3 N.m).
(d)Torque the B-nuts of the core wash manifold (9) to 262-308 lb in. (29.6-34.8 N.m).
(6)Install the core wash water tube (3, Figure 3) on the fan hub frame (01-490A, 72-26-00) as follows:
(a)Connect the core wash water tube (3) to the core wash manifold (9) and to the core wash nozzle (6), tighten B-nuts hand tight.
(b)Attach the core wash water tube (3) to the support bracket (1) with one cushioned loop clamp (5) and one machine bolt (7).
(c)Torque the machine bolt (7) to 32-38 lb in. (3.6-4.3 N.m).
(d)Torque the B-nuts of the core wash water tube (3) to 262-308 lb in. (29.6-34.8 N.m).
(7)Install the core wash tube (2, Figure 5) on the fan hub frame (01-490A, 72-26-00) as follows:
(a)Remove the tube cap (01-320, 72-00-03) from the tube in aft drain upper manifold (manifold) (01-030, 72-00-03).
(b)Connect the core wash tube (2) to the core wash water tube (1), tighten B-nuts hand tight.
(c)Connect the core wash tube (2) to the manifold (01-030, 72-00-03), tighten B-nuts hand tight.
(d)Attach the core wash tube (2) to the tube bracket (10-010, 79-22-10) with a cushioned loop clamp (3) and a machine bolt (25-190, 72-00-02).
 (e)Torque the machine bolt (25-190) to 51-59 lb in. (5.8-6.7 N.m).
(f)Attach the core wash tube (2) to the A sump scavenge tube (05-060, 79-22-20) with a cushioned loop clamp (3) and a machine bolt (25-190, 72-00-02).
 (g)Torque the machine bolt (25-190) to 51-59 lb in. (5.8-6.7 N.m).
(h)Torque the B-nuts of the core wash tube (2) to 262-308 lb in. (29.6-34.8 N.m).
(8)Install the coupling (1, Figure 6) on the lower bifurcation-drain manifold (01-020, 72-00-03) as follows:
(a)Remove the plug (01-350, 72-00-03).
(b)Insert the spacer (2) on the coupling (1).
(c)Apply C02-058 thread lubricating to the male threads and bearing surfaces of the coupling (1).
(d)Insert the coupling (1) through the lower bifurcation-drain manifold (01-020, 72-00-03) and secure with the nut (3) hand tight.
(e)Connect the manifold (01-030, 72-00-03) to the coupling (1) hand tight.
(f)Torque the nut (3) to 262-308 lb in. (29.6-34.8 N.m).
 (g)Use C10-143 safety cable or safety wire to firmly attach the nut.
(h)Torque the B-nut of the manifold (01-030, 72-00-03) to 262-308 lb in. (29.6-34.8 N.m).
(i)Apply C02-058 thread lubricating to the male threads of the coupling (1). Install the cap assembly (4) and torque to 262-308 lb in. (29.6-34.8 N.m).
 (j)Attach the lanyard (5) to the drain manifold (01-020, 72-00-03) and cap assembly (4).
Plug Nozzles Removal
Figure 1  
Core Wash Nozzle Installation
Figure 2  
Removal of Water Wash Tubes (78002 and 78003)
Figure 3  
Removal of Water Wash Tube (78004)
Figure 4  
Removal of Water Wash Tube (78001)
Figure 5  
Installation of Coupling and Cap Assembly
Figure 6