Installation of the Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) [PW11]

TASK 75-31-01-400-801-A
Installation of the Low Pressure Compressor (LPC) Stator Vane Actuator (SVA)

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 400
FIN: 4054KS ** ON A/C NOT FOR ALL

1. Reason for the Job
Use this procedure to install the Low Pressure Compressor (LPC) Stator Vane Actuator (SVA).
For more information about the actuator, refer to (75-00-00-00U).
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	PLIERS - JAWED, SOFT
No specific	1	STEPLADDER 0.5 M (1.6 FT)
No specific	Torque wrench: range to between 30 and 26 lbf.in (0.34 and 0.29 m.daN )
No specific	Torque wrench: range to between 60 and 50 lbf.in (0.68 and 0.57 m.daN )
No specific	Torque wrench: range to between 75 and 65 lbf.in (0.85 and 0.73 m.daN )
No specific	Torque wrench: range to between 115 and 100 lbf.in (1.30 and 1.13 m.daN )
No specific	Torque wrench: range to between 225 and 200 lbf.in (2.54 and 2.26 m.daN )
No specific	Torque wrench: range to between 375 and 340 lbf.in (4.24 and 3.84 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P06-054)	Antigalling Compound

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-720-811-A	Test No. 3A - Idle Power Test
TASK 71-00-00-860-832-A	Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 72-21-08-400-801-A	Installation of the Fan Exit Liner Segments
TASK 73-21-00-710-807-A	Test No.6 - EEC Operation Test (Idle Test)
TASK 73-21-00-710-809-A	Test No.15 - Operation Test (Dry Motor) of the FADEC System Engine Actuators
TASK 73-25-34-400-802-A	Installation of the Engine Interface Unit (EIU)
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Insulation Blanket) (Config 1)
Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Disconnect the Harnesses (W03) and (W04) and the Tubes (CP02) and (CR02))
Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Harnesses (W03) and (W04) and Tubes (CP02), (CR02) Installation)
Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Insulation Blanket) (Config 2)

3. Job Set-up
Subtask 75-31-01-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832)

Subtask 75-31-01-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
(2) Make sure that the STEPLADDER 0.5 M (1.6 FT) is in position.

Subtask 75-31-01-040-051-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make sure that you did the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 75-31-01-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the left thrust-reverser cowl-doors is open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 75-31-01-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Low Pressure Compressor (LPC) Stator Vane Actuator (SVA)
(1) Removal of the protection covers.

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
(2) Install the LPC SVA (1) as follows:

Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Harnesses (W03) and (W04) and Tubes (CP02), (CR02) Installation) ** ON A/C NOT FOR ALL

(a) Make sure that the actuator (1) piston is retracted.
(b) Install the actuator (1) on the compressor intermediate case (CIC) bulkhead with the four captive bolts (5) and (2).
(c) TORQUE the two captive bolts (5) to between 60 and 50 lbf.in (0.68 and 0.57 m.daN )

.
(d) TORQUE the two captive bolts (2) equally and in small increments to between 115 and 100 lbf.in (1.30 and 1.13 m.daN )

.
(e) Apply Antigalling Compound (Material No.P06-054) to the bolt (4).

NOTE: For new or refurbished bolts or nuts with baked-on lubricant, do not do the wet application.

(f) Attach the LPC SVA link to the actuator (1) with the bolt (4) and nut (3).
(g) TORQUE the nut (3) to between 30 and 26 lbf.in (0.34 and 0.29 m.daN )

.
(3) Connect the servo fuel tubes (CR02) and (CP02) to the actuator (1) as follows:

Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Disconnect the Harnesses (W03) and (W04) and the Tubes (CP02) and (CR02)) ** ON A/C NOT FOR ALL

CAUTION: USE A SECOND WRENCH TO HOLD THE MATING PARTS WHEN YOU LOOSEN OR TIGHTEN THE TUBE OR HOSE NUTS. IF YOU DO NOT OBEY THIS CAUTION, YOU CAN TWIST OR CAUSE DAMAGE TO THE TUBES OR HOSES.

(a) Connect the tubes (CR02) and (CP02) to the actuator (1).
(b) TORQUE the fuel tube (CR02) B-nut to between 375 and 340 lbf.in (4.24 and 3.84 m.daN )

.
(c) TORQUE the fuel tube (CP02) B-nut to between 225 and 200 lbf.in (2.54 and 2.26 m.daN )

.
(4) Connect the drain tube (DR01) to the actuator (1) as follows:

Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Harnesses (W03) and (W04) and Tubes (CP02), (CR02) Installation) ** ON A/C NOT FOR ALL

CAUTION: USE A SECOND WRENCH TO HOLD THE MATING PARTS WHEN YOU LOOSEN OR TIGHTEN THE TUBE OR HOSE NUTS. IF YOU DO NOT OBEY THIS CAUTION, YOU CAN TWIST OR CAUSE DAMAGE TO THE TUBES OR HOSES.

(a) Connect the drain tube (DR01) to the actuator (1).
(b) TORQUE the B-nut to between 75 and 65 lbf.in (0.85 and 0.73 m.daN )

.
(c) Remove the tape that was placed on the drain tube to prevent the B-nut from slipping when the actuator (1) was removed.
(5) Connect the wiring harness (W03) and (W04) connectors (P18) and (P19) to the actuator receptacles (J18) and (J19) as follows:

Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Disconnect the Harnesses (W03) and (W04) and the Tubes (CP02) and (CR02)) ** ON A/C NOT FOR ALL

(a) Examine, align and engage the connector.
(b) Push lightly inward on the connector while you tighten the coupling ring.
(c) Use the PLIERS - JAWED, SOFT and tighten the connector against the receptacle.
(d) Make sure that you can feel the ratchet feature.
(e) While you tighten, push the connector in and from side to side.
(f) Tighten the connector until the PLIERS - JAWED, SOFT slip on the connector ring.

PRE SB C-75-00-0013A (Config-1: Initial Design Configuration)

(6) Install the insulation blanket (2) on the actuator (1).

Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Insulation Blanket) (Config 1) ** ON A/C NOT FOR ALL

END OF PRE SB C-75-00-0013A

POST SB C-75-00-0013A (Config-2: Case Assembly Durability Improvement Configuration)

(7) Install the insulation blanket (2) on the actuator (1).

Low Pressure Compressor (LPC) Stator Vane Actuator (SVA) (Insulation Blanket) (Config 2) ** ON A/C NOT FOR ALL

END OF POST SB C-75-00-0013A

(8) Install the fan exit liner segment (Ref. AMM TASK 72-21-08-400-801).
(9) Examine the assembly for unwanted objects, damage and correct assembly.
(10) Make sure that you install all the necessary COVER - PROTECTION to prevent engine damage.

5. Close-up
Subtask 75-31-01-860-050-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the left thrust-reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL

Subtask 75-31-01-440-050-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 75-31-01-410-050-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Remove the access platform(s).
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).
(4) Make sure that all the circuit breakers shown in the paragraph Procedure of the engine interface unit installation are closed. If they are not, close them in the recommended sequence
(Ref. AMM TASK 73-25-34-400-802)

Subtask 75-31-01-720-050-A ** ON A/C NOT FOR ALL

D. Tests
(1) Do the test N°3 - Idle power test (Ref. AMM TASK 71-00-00-720-811).
(2) Do the test N°6 - EEC - Idle test (Ref. AMM TASK 73-21-00-710-807).
(3) Do the test N°15 - Operation Test (Dry Motor) of the Engine Actuators (Ref. AMM TASK 73-21-00-710-809).

[Rev.10 from 2021] 2026.04.01 03:13:30 UTC