Installation of Starter Motor Clutch (131-9(A))

TASK 49-42-52-400-003-A
Installation of Starter Motor Clutch (131-9(A))

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

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

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 1.54 and 1.26 m.daN (136.28 and 111.50 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03ABA1)	Synthetic base Lubricating Oil-Turbine Engine - -
(Material No.03ABB1)	Synthetic base Lubricating Oil-Turbine Engine Low Temp. -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
315AL, 316AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	PACKING	AIPC 49-42-09-01-070
5	PACKING	AIPC 49-42-84-30-060

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 49-42-51-400-006-A	Installation of the Starter Motor (131-9(A))
TASK 49-42-51-700-002-A	Test of the Clutch of the APU Starter Motor (131-9(A))
TASK 52-41-00-010-001-A	Open the APU Doors for Access
TASK 52-41-00-410-001-A	Close the APU Doors after Access
Clutch - Starter Motor

3. Job Set-up
Subtask 49-42-52-860-057-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3) Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
(5) Make sure that the access platform is in position below the APU compartment.
(6) Make sure that the APU access doors are open (Ref. AMM TASK 52-41-00-010-001).
(7) Set the LIGHT SW 11LJ to the ON position.

Subtask 49-42-52-865-057-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

4. Procedure
Subtask 49-42-52-420-056-A ** ON A/C NOT FOR ALL

A. Install the Starter Motor Clutch

Clutch - Starter Motor ** ON A/C NOT FOR ALL

(1) Remove the blanking plug from the gearbox housing.
(2) Apply a thin layer of Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) to the new AIPC 49-42-09-01-070 PACKING (5) or AIPC 49-42-84-30-060 PACKING (5) and install it on the cover (4).
(3) Install the clutch (7) in the gearbox housing.
(4) Install the wave-spring washer (6).
(5) Position the cover (4).
(6) Install the bolts (1) and washers (2) to secure the cover.
(7) Install the V-clamp (3) with the bolt (1).
(8) TORQUE the bolts (1) to between 1.54 and 1.26 m.daN (136.28 and 111.50 lbf.in )

Subtask 49-42-52-410-054-A ** ON A/C NOT FOR ALL

B. Install the starter motor (Ref. AMM TASK 49-42-51-400-006).

Subtask 49-42-52-710-053-A ** ON A/C NOT FOR ALL

C. Test the starter motor. (Ref. AMM TASK 49-42-51-700-002)

5. Close-up
Subtask 49-42-52-410-055-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Set the LIGHT switch 11LJ to the OFF position.
(3) Close the APU access doors 316AR 315AL (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).

Subtask 49-42-52-865-058-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-42-52-860-058-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration.
(1) Put the related hydraulic system in the pressurized configuration (Ref. AMM TASK 29-00-00-864-001).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:43:07 UTC