Removal of the Left Variable Stator Vane (VSV) Actuator [CFML]

TASK 75-32-05-000-802-A
Removal of the Left Variable Stator Vane (VSV) Actuator

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

FIN: 4022KS11
FIN: 4022KS12

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)
No specific	AR	CAP - PROTECTION
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - PROTECTION
No specific	1	PLIERS - JAWED, SOFT
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 70-70-00-910-804-A	Electrical Standard Practices
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 72-24-01-000-801-A	Removal of Segment Shrouds 1 thru 5
TASK 72-24-80-000-801-A	Removal of the Variable Bleed Valve (VBV) Ducts
TASK 78-30-00-040-809-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
CMM 753205
Left Variable Stator Vane (VSV) Actuator (PRE and POST SB 72-0268)

3. Job Set-up
Subtask 75-32-05-941-055-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch, and
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 75-32-05-010-062-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.

Subtask 75-32-05-040-056-A

C. Deactivation of the Thrust Reverser System for Ground 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) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-809).

Subtask 75-32-05-010-063-A

D. Open the left thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-010-806):
(1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL
(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL

4. Procedure

WARNING: BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES. IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER. IF NECESSARY, GET MEDICAL HELP. AIRCRAFT FUEL IS POISONOUS.

Subtask 75-32-05-020-051-A

A. Removal of the Left Variable Stator Vane (VSV) Actuator
(1) Remove the engine kit segment shroud 5 (Ref. AMM TASK 72-24-01-000-801).
(2) Remove the No. 6 Variable Bleed Valve (VBV) duct (Ref. AMM TASK 72-24-80-000-801).
(3) Remove the bolt (44) that attaches the loop clamp (43) to the support bracket (41).
(4) Disconnect the T-3 sensor connector (77) from the T-3 sensor (76).
(5) Disconnect the Low Pressure Turbine Active Clearance Control (LPTACC) valve connector (74) from the LPTACC valve (75).
(6) Disconnect the High Pressure Turbine Active Clearance Control (HPTACC) connector (72) from the HPTACC valve (73).
(7) Disconnect the electrical connector (53) from the left VSV actuator (49). Use PLIERS - JAWED, SOFT, if necessary (Ref. AMM TASK 70-70-00-910-804).
(8) Put a CONTAINER 5 L (1.32 USGAL) below the left VSV actuator (49).
(9) Disconnect the drain tube (56) B-nut from the left VSV actuator (49) and let the fuel drain.
(10) Remove the four bolts (55) that attach the fuel-hydraulic VSV tube-hose (50) to the left VSV actuator (49).
(11) Remove and discard the gasket seal (54).
(12) Remove the left VBV connector (79) from the left VBV actuator (78).
(13) Remove the bolt (58), bushing (57), washer (65) and nut (64) that attach the left VSV actuator rod (51) and connecting link (61) to the bell crank assembly (52).
(14) Remove the bolt (59), bushing (60), washer (62) and nut (63) that attach the connecting link (61) to the left VSV actuator rod (51).
(15) Remove the bolt (70), spacer (69) and nut (71) that attach the bell crank assembly (52) to the left VSV actuator (49).
(16) Remove the bolt (66) and nut (67) that attach the bell crank assembly (52) to the left VSV actuator (49) and remove the left VSV actuator (49) from the engine.
(17) Remove the sleeve (68) from the left VSV actuator (49).
(18) Install the COVER - PROTECTION and CAP - PROTECTION on all the open ports, open tubes, open hoses and the disconnected connectors.

Subtask 75-32-05-620-051-A

B. Preservation of the Left VSV Actuator
(1) In the instance of shipping or prolonged storage, preserve the left VSV actuator per the CMM 753205.

[Rev.10 from 2021] 2026.04.01 03:14:59 UTC