Lubrication of the HP Compressor Variable Stator Vane (VSV) Mechanism [IAE]

TASK 75-32-42-640-802-A
Lubrication of the HP Compressor Variable Stator Vane (VSV) Mechanism

1. Reason for the Job
This task is for A5 engines only, which have SBE 72-0564 incorporated (SelectOne Production Standard) and PRE SBE 75-0122 installed VSVA.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	HOSE LENGTH 2 M (6.6 FT)
No specific	AR	SYRINGE
No specific	AR	WARNING NOTICE(S)
No specific	1	WRENCH - STANDARD
No specific	Torque wrench: range to between 370 and 290 lbf.in (4.18 and 3.28 m.daN )
IAE1R18254	1	PIN RIGGING
IAE1R18282	1	PIN, RIGGING
IAE1R18891	1	PIN, RIGGING

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V10-108)	lubricant

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
Lever Arm Lubrication Position
VSV Crankshaft
Location of Centralizing Pads

3. Job Set-up
Subtask 75-32-42-941-076-A ** ON A/C NOT FOR ALL

A. Safety Precautions

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.

(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).

Subtask 75-32-42-010-113-A ** ON A/C NOT FOR ALL

B. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 75-32-42-040-086-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Deactivate the thrust reverser hydraulic control unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 75-32-42-010-114-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 75-32-42-941-077-A ** ON A/C NOT FOR ALL

E. Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

4. Procedure
Subtask 75-32-42-020-070-A ** ON A/C NOT FOR ALL

A. Disconnection of the VSV Actuator

Lever Arm Lubrication Position ** ON A/C NOT FOR ALL

VSV Crankshaft ** ON A/C NOT FOR ALL

(1) Remove the nut (2), the washer (1) and the bolt (4). Disconnect the rod (3) from the actuator.

Subtask 75-32-42-040-087-A ** ON A/C NOT FOR ALL

CAUTION: DO NOT BREATHE GAS FROM TEFLON BASED LUBRICANT. PUT A PROTECTION ON YOUR MOUTH. THE GAS CAN IRRITATE YOU.

CAUTION: MAKE SURE THAT YOU SHAKE THE LUBRICANT WELL BEFORE USE. THIS WILL MAKE SURE THAT THE PTFE IS WELL DISTRIBUTED WITHIN THE LUBRICANT.

CAUTION: DO NOT APPLY LUBRICANT TO THE VSV ACTUATOR.

CAUTION: DO NOT APPLY LUBRICANT TO THE VSV LEVERS.

CAUTION: DO NOT LUBRICATE CRANKSHAFT BEARING. THESE VSV CRANKSHAFT BEARINGS ARE DESIGNED TO RUN DRY. LUBRICATION OF THESE WILL CAUSE SWELLING ON THE BEARING FABROID MATERIAL, RESULTING IN TIGHTNESS OF OPERATION.

B. Application of the Lubricant with the VSV Mechanism at the Low Speed Position

NOTE: Make sure the VSV system is at the low speed position. If necessary, use an applicable wrench on the flats of the crankshaft to move the VSV mechanism to its low speed position.

(1) Use a SYRINGE and HOSE LENGTH 2 M (6.6 FT) to squirt the lubricant (Material No.V10-108) on to all stages, on the surfaces that follow:
(a) VSV unison ring centralizing pads.

Location of Centralizing Pads ** ON A/C NOT FOR ALL

Subtask 75-32-42-980-054-A ** ON A/C NOT FOR ALL

C. Application of the Lubricant when Moving the VSV System from the Low Speed to the High Speed Position

CAUTION: DO NOT LET THE VSVS MOVE THROUGH THE LOW OR HIGH SPEED POSITIONS WHEN THE CRANKSHAFT IS TURNED. THE ENGINE CAN BE DAMAGED INTERNALLY.

(1) Use an applicable wrench on the flats of the crankshaft and move the VSV system from the low speed to the high speed position.
(2) Squirt the lubricant on to the areas that can now be seen as given in B.(1)(a) above.
(3) Move the VSV system again and again from the high to the low speed position. Use an applicable wrench on the flats of the crankshaft. Make sure sufficient lubricant goes between the casing pads and the actuating ring.
(4) Check the force necessary to move the VSV mechanism.
(a) Measure the torque after the lubrication. Put a torque wrench with an applicable wrench adapter on the wrench flats of the crankshaft. Measure the torque necessary to turn crankshaft from the low speed position to the high speed position.
1 If the torque necessary after the lubrication is more than 350 lbf.in (3.96 m.daN), reject the engine.

Subtask 75-32-42-420-074-A ** ON A/C NOT FOR ALL

D. Locking of the Actuator and the Crank Assembly

VSV Crankshaft ** ON A/C NOT FOR ALL

(1) Move the actuator ram to the high speed position (ram retracted) so that the fork end is against the high speed stop.

NOTE: Use a WRENCH - STANDARD on the flats on the crank to move the VSVs to the high speed position.

(2) Position the ram to align the rig pin slot in the fork end with the hole in the rig pin housing.
(3) Installation of the rig pin.

CAUTION: YOU MUST MAKE SURE THAT THE RIG PIN IAE1R18282 OR IAE1R18891 IS FULLY AND CORRECTLY INSTALLED IN THE VSV ACTUATOR. IF YOU DO NOT DO THIS, THE AVAILABLE POWER FROM THE ENGINE CAN BE DECREASED.

(a) Install the IAE1R18282 PIN, RIGGING or the IAE1R18891 PIN, RIGGING through the rig pin housing and the actuator ram fork end.

NOTE: Move the actuator ram fork end to align the rig pin slot in the fork end and the rig pin hole in the rig pin housing if the rig pin cannot be fully installed.

(4) Install the IAE1R18254 PIN RIGGING in the crank assembly.

Subtask 75-32-42-420-075-A ** ON A/C NOT FOR ALL

E. Connection of the VSV Actuator

VSV Crankshaft ** ON A/C NOT FOR ALL

(1) Put the rod (3) in position on the actuator.
(2) Installation of the bolt (4).

CAUTION: YOU MUST MAKE SURE THAT RIG PIN IAE1R18282 OR IAE1R18891 IS FULLY AND CORRECTLY INSTALLED IN THE VSV ACTUATOR WHEN YOU INSTALL THE BOLT. IF IT IS NOT, DAMAGE TO THE ENGINE CAN OCCUR.

CAUTION: YOU MUST MAKE SURE THAT THE BOLT IS CORRECTLY INSTALLED TO THE VSV ACTUATOR FORK. IF YOU DO NOT DO THIS, EXTENSIVE DAMAGE TO THE ENGINE CAN OCCUR.

(3) Install the bolt (4), the washer (1) and the nut (2).

NOTE: Make sure the D-head bolt (4) is installed in the correct orientation to the VSV actuator fork. The D-head bolt straight face aligns with the location feature on the mating actuator fork.

(4) TORQUE the nut to between 370 and 290 lbf.in (4.18 and 3.28 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

NOTE: The correct installation of bolt (4) makes sure that the nut (2) can be torqued correctly.

Subtask 75-32-42-080-053-A ** ON A/C NOT FOR ALL

F. Removal of the Rigging Pins
(1) Remove the IAE1R18254 PIN RIGGING and the IAE1R18282 PIN, RIGGING or the IAE1R18891 PIN, RIGGING.

5. Close-up
Subtask 75-32-42-942-055-A ** ON A/C NOT FOR ALL

A. Removal of the Ground Support Equipment
(1) Remove the access platform.

Subtask 75-32-42-410-116-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 75-32-42-440-072-A ** ON A/C NOT FOR ALL

C. Activate the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 75-32-42-410-117-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:55:54 UTC