* * * FOR ALL
TASK 72-31-41-100-801
1 . General.
A.This procedure gives instructions to clean the HPC stage 1 blisk (blisk). Refer to Figure 601 and Figure 601A.
•
Blisk (01-800 , 72-31-00) (SIN 056A1)
•
Blisk (01-800A , 72-31-00) (SIN 056A1) (SB 72-0013)
•
Blisk (02-800 , 72-31-00) (SIN 056A1) (SB 72-0157).
B.Use the 11C3361   lift fixture to position, lift, or turn the blisk in the working area. Refer to Subtask 72-31-41-420-001 (paragraph 4.) for instructions about installation and removal of the tool.
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
 
11C3361G01
Fixture, Lift/Turn HP Compressor Rotor, Stage 1 Blisk (lift fixture)
 
9429M77G04
Fixture, Lift and Turn - General Purpose (lift/turn fixture)
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials.
 
Code No.
Description
 
C04-116
Rice Hulls (Rice Hulls)
 
C04-153
Abrasive, Plastic (Plastic Abrasive)
C.Referenced Procedures.
 
ATA No.
Description
 
70-00-99
Wet Abrasive Blasting - Aluminum Oxide 500 Grit
 
70-21-03
Steam Cleaning
 
70-21-04
Dry Abrasive Blast Cleaning
 
70-21-05
Wet Abrasive Blast Cleaning
 
70-21-09
Light-Duty Alkaline Cleaning of Titanium Alloys
 
70-21-22
Light Duty Aqueous Cleaning
D.Expendable Parts. None.
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* * * PRE SB   72-0013( Blisk Made of Ti 6-4 (AMS 4928) )
Figure 601   Blisk - Cleaning
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* * * SB   72-0013( Blisk Made of Ti 17 )
* * * SB   72-0157( Blisk Made of Ti 17 )
Figure 601A   Blisk - Cleaning
3 . General Cleaning.
Subtask 72-31-41-160-001
WARNING:
BECAUSE OF ENGINE OPERATION, THE AIRFOIL TIPS CAN HAVE SHARP EDGES AND CORNERS. BE CAREFUL AND USE APPROPRIATE PROTECTIVE EQUIPMENT TO PREVENT INJURY.
A.Alternative Procedures Available. Steam clean the blisk. Refer to TASK 70-21-03-160-001 (CLEANING METHOD 3 - STEAM CLEANING).
Subtask 72-31-41-110-001
A.A.Alternative Procedure. Alkaline clean the blisk. Refer to TASK 70-21-09-110-007 (CLEANING METHOD 9 - LIGHT-DUTY ALKALINE CLEANING OF TITANIUM ALLOYS).
Subtask 72-31-41-120-001
A.B.Alternative Procedure. Dry abrasive blast clean the blisk with C04-116  Rice Hulls. Refer to TASK 70-21-04-120-B01 (Dry Abrasive Blast Cleaning Method 4B).
Subtask 72-31-41-120-002
A.C.Alternative Procedure. Dry abrasive blast clean the blisk with C04-153  Plastic Abrasive. Refer to TASK 70-21-04-120-E01 (DRY ABRASIVE BLAST CLEANING METHOD 4E).
Subtask 72-31-41-110-002
A.D.Alternative Procedure. Light duty aqueous clean the blisk. Refer to TASK 70-21-22-110-042 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 1)).
Subtask 72-31-41-120-004
A.E.Alternative Procedure. Wet abrasive blast clean the blisk with 500 grit aluminum oxide. Refer to TASK 70-21-05-120-B02 (WET ABRASIVE BLAST CLEANING METHOD 5B) and TASK 70-00-99-801-054 (S1054 - WET ABRASIVE BLASTING - ALUMINUM OXIDE 500 GRIT).
4 . Tool Installation and Removal.
Subtask 72-31-41-420-001
A.Install the 11C3361   lift fixture. Refer to Figure 602 and do as follows:
(1)Move the clamp (item 3) in, before the mounting plate (item 2) is installed on the blisk.
(2)Install the mounting plate (item 2) on the forward flange of the blisk.
WARNING:
ENSURE THE CLAMP ENGAGES THE BLISK FLANGE AND THE THUMB SCREW IS INSTALLED IN THE POCKET OF THE MOUNTING PLATE. FAILURE TO COMPLY CAN CAUSE STAGE 1 BLISK TO DROP AND CAUSE INJURY OR DEATH OF PERSONNEL.
(3)Move the clamp (item 3) out to lock on the lip of the blisk flange in the groove of the clamp (item 3).
(4)Manually turn the thumb screw (item 11) to adjust it until there is no clearance between the clamp (item 3) jaw and the blisk flange.
(5)Make sure that the thumb screw (item 11) is correctly installed in the pocket of the mounting plate (item 2).
(6)Turn the knurled knob (item 10) to attach the clamp (item 3).
(7)Set the lock pad (item 5) on the mounting plate (item 2) as follows:
(a)Move the trunnion (item 4) to the top position in the slot of the mounting plate (item 2).
(b)Lock the trunnion (item 4) with the lock pad (item 5) in the top position.
(c)Release the plunger (item 9) to move the lock pad (item 5).
(d)Engage the plunger (item 9) in the related mounting plate (item 2) hole to keep the lock pad (item 5) in position.
(8)Use the 9429M77   lift/turn fixture to move the 11C3361   lift fixture.
Subtask 72-31-41-020-001
B.Remove the 11C3361   lift fixture. Refer to Figure 602 and do as follows:
(1)Loosen the knurled knob (item 10) to release the clamp (item 3).
(2)Loosen the thumb screw (item 11) until is released from the pocket of the mounting plate (item 2).
(3)Move the clamp (item 3) in to release the lip of the blisk flange out of the groove of the clamp (item 3).
(4)Remove the mounting plate (item 2) from the blisk.
* * * FOR ALL
Figure 602   (Sheet 1 ) Installation/Removal of the Lift Fixture, 11C3361, on the Blisk
* * * FOR ALL
Figure 602   (Sheet 2 ) Installation/Removal of the Lift Fixture, 11C3361, on the Blisk