* * * FOR ALL
TASK 72-32-70-100-801
1 . General.
A.This procedure gives instructions to clean the HPC stator stages 1 thru 4 VSV lever arms (lever arms). Keep all parts together by engine serial number. The references for the parts are as follows. Refer to Figure 601.
NOTE:
There are two interchangeable types of VSV stage 1-4 kit, consisting of vanes, lever arms, ring segments, bridge connectors, and sleeves. Parts of one of the configurations are always replaceable as set by stage. A single entire stage of the new VSV lever arm system can be installed with the old VSV lever arm system remaining on the other stages. Refer to Figure 601.
NOTE:
HPC stator stages 1 thru 4 VSV lever arms include:
PRE SB 72-0052 (CONFIGURATION 1)
•
Stage 1 and 2 lever arms (01-050 , 72-32-00) (SIN 071D1) and (01-090 , 72-32-00) (SIN 071D2)
•
Stage 1 and 2 bridge lever arms (01-060 , 72-32-00) (SIN 071D6) and (01-100 , 72-32-00) (SIN 071D7)
•
Stage 3 lever arm (01-120 , 72-32-00) (SIN 071D3)
•
Stage 3 bridge lever arm (01-130 , 72-32-00) (SIN 071D8)
•
Stage 4 lever arm (01-160 , 72-32-00) (SIN 071D4)
•
Stage 4 bridge lever arm (01-170 , 72-32-00) (SIN 071D9).
SB 72-0052 (CONFIGURATION 2)
•
Stage 1 thru 4 lever arms (01-050A , 72-32-00) (SIN 071D1), (01-090A , 72-32-00) (SIN 071D2), (01-120A , 72-32-00) (SIN 071D3), and (01-160A , 72-32-00) (SIN 071D4).
•
Stage 1 thru 4 rigging lever arms (01-180 , 72-32-00) (SIN 071C0).
•
Stage 1 thru 4 bridge lever arms (01-060A , 72-32-00) (SIN 071D6), (01-100A , 72-32-00) (SIN 071D7), (01-130A , 72-32-00) (SIN 071D8), and (01-170A , 72-32-00) (SIN 071D9). Refer to Figure 601.
2 . Tools, Equipment, and Materials.
NOTE:
You can use equivalent alternatives for tools, equipment, and consumable materials.
A.Tools and Equipment.
(1)Special Tools. None.
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials. None.
C.Referenced Procedures.
 
ATA No.
Description
 
70-21-03
Steam Cleaning
 
70-21-04
Dry Abrasive Blast Cleaning
 
70-21-09
Light-Duty Alkaline Cleaning of Titanium Alloys
 
70-21-14
Manually-Assisted Detergent Cleaning
 
70-21-22
Light Duty Aqueous Cleaning
D.Expendable Parts. None.
3 . General Cleaning.
Subtask 72-32-70-100-001
* * * PRE SB   72-0052( Configuration 1 )
A.Alternative Procedures Available. Steam clean the lever arms. Refer to TASK 70-21-03-160-001 (CLEANING METHOD 3 - STEAM CLEANING).
* * * FOR ALL
* * * PRE SB   72-0052( Configuration 1 )
Figure 601   HPC Stator Stages 1 thru 4 VSV Lever Arms - Cleaning (Configuration 1)
* * * FOR ALL
* * * SB   72-0052( Configuration 2 )
Figure 601A   HPC Stator Stages 1 thru 4 VSV Lever Arms - Cleaning (Configuration 2)
Subtask 72-32-70-110-001
A.A.Alternative Procedure. Manually-assisted detergent clean the lever arms. Refer to TASK 70-21-14-110-012 (CLEANING METHOD 14 - MANUALLY-ASSISTED DETERGENT CLEANING)
Subtask 72-32-70-110-002
A.B.Alternative Procedure. Light-duty alkaline clean the lever arms. Refer to TASK 70-21-09-110-007 (CLEANING METHOD 9 - LIGHT-DUTY ALKALINE CLEANING OF TITANIUM ALLOYS).
Subtask 72-32-70-120-001
A.C.Alternative Procedure. Dry abrasive blast clean the lever arms. Refer to TASK 70-21-04-120-E01 (DRY ABRASIVE BLAST CLEANING METHOD 4E).
Subtask 72-32-70-110-003
A.D.Alternative Procedure. Light duty aqueous clean the lever arms. Refer to TASK 70-21-22-110-042 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 1)).
Subtask 72-32-70-110-004
A.E.Alternative Procedure. Light duty aqueous clean the lever arms. Refer to TASK 70-21-22-110-050 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 2)).
* * * END PRE SB   72-0052
* * * SB   72-0052( Configuration 2 )
Subtask 72-32-70-160-001
B.Alternative Procedure Available. Steam clean the lever arms. This does not apply to rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-03-160-001 (CLEANING METHOD 3 - STEAM CLEANING).
Subtask 72-32-70-110-005
B.A.Alternative Procedure. Manually-assisted detergent clean the lever arms. This does not apply to rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-14-110-012 (CLEANING METHOD 14 - MANUALLY-ASSISTED DETERGENT CLEANING).
Subtask 72-32-70-110-006
B.B.Alternative Procedure. Light-duty alkaline clean the lever arms. This does not apply to rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-09-110-007 (CLEANING METHOD 9 - LIGHT-DUTY ALKALINE CLEANING OF TITANIUM ALLOYS).
Subtask 72-32-70-120-002
B.C.Alternative Procedure. Dry abrasive blast clean the lever arms. This does not apply to rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-04-120-E01 (DRY ABRASIVE BLAST CLEANING METHOD 4E).
Subtask 72-32-70-110-007
B.D.Alternative Procedure. Light duty aqueous clean the lever arms. This does not apply to rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-22-110-042 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 1)).
Subtask 72-32-70-110-008
B.E.Alternative Procedure. Light duty aqueous clean the lever arms. This does not apply to rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-22-110-050 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 2)).
Subtask 72-32-70-160-002
C.Alternative Procedure Available. Steam clean the rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-03-160-001 (CLEANING METHOD 3 - STEAM CLEANING).
Subtask 72-32-70-110-009
C.A.Alternative Procedure. Manually-assisted detergent clean the rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-14-110-012 (CLEANING METHOD 14 - MANUALLY-ASSISTED DETERGENT CLEANING).
Subtask 72-32-70-110-010
C.B.Alternative Procedure. Light-duty alkaline clean the rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-09-110-007 (CLEANING METHOD 9 - LIGHT-DUTY ALKALINE CLEANING OF TITANIUM ALLOYS).
Subtask 72-32-70-110-011
C.C.Alternative Procedure. Light duty aqueous clean the rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-22-110-042 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 1)).
Subtask 72-32-70-110-012
C.D.Alternative Procedure. Light duty aqueous clean the rigging lever arms (01-180 , 72-32-00) (SIN 071C0). Refer to TASK 70-21-22-110-050 (CLEANING METHOD 22 - LIGHT DUTY AQUEOUS CLEANING (METHOD 2)).
* * * END SB   72-0052