Removal of the Generator Substitution Kit after Trouble Shooting (131-9(A))

TASK 49-11-00-000-006-A
Removal of the Generator Substitution Kit after Trouble Shooting (131-9(A))

WARNING: DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

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 4M (13 FT)-ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	CONTAINER 1 L (1/4 USGAL)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
315AL, 316AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-23-51-400-001-A	Installation of the APU Generator
TASK 24-23-51-400-001-A-01	Installation of the APU Generator with the Minilift Hoist
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 52-41-00-410-001-A	Close the APU Doors after Access
APU Generator - Substitution Kit

3. Job Set-up
Subtask 49-11-00-860-071-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 pushbutton switch is off.
(3) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
(4) Put a CONTAINER 1 L (1/4 USGAL) below the cover assembly (3) to collect the oil which will flow when you remove the drain plug (5).

Subtask 49-11-00-865-069-A ** ON A/C NOT FOR ALL

B. Open, safety and tag 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 49-11-00-010-063-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the APU compartment.
(2) Open the APU access doors 315AL 316AR.
(3) Set the LIGHT switch to the ON position.

4. Procedure
Subtask 49-11-00-020-061-A ** ON A/C NOT FOR ALL

A. Removal of the Generator Substitution Kit (131-9(A))

APU Generator - Substitution Kit ** ON A/C NOT FOR ALL

(1) Put a CONTAINER 1 L (1/4 USGAL) below the cover assembly (3) to collect the oil which will flow when you remove the drain plug (5).
(2) Removal of the lockwire:

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(a) Remove and discard the lockwire from the drain plug (5).
(3) Remove the drain plug (5) from the cover assembly (3).
(4) Remove the electrical connector (7) from the generator cable support (6).
(5) Remove the nut (17), washer (16), screw (12), washer (13), clamp (14) and spacer (15) from the generator cable support (6).
(6) Remove the nuts (8) and the electrical cables (9) from the generator cable support (6).
(7) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(8) Remove the nuts (4) from the cover assembly (3) and from the generator cable support (6).
(9) Remove the cover assembly (3) and the generator cable support (6) (Ref. AIPC 49-11-04-05-010) from the mounting flange (1).
(10) Remove and discard the seal (2).
(11) Remove the bolts (11) and the seal plate (10) from the cover assembly (3).
(12) Do an inspection of the component interfaces and the adjacent area.
(13) Clean the component interfaces and the adjacent area.
(14) Make sure that the work area is clean and clear of tools and other items.

Subtask 49-11-00-420-061-A ** ON A/C NOT FOR ALL

B. Install the APU generator 8XS to the mounting flange (1) (Ref. AMM TASK 24-23-51-400-001).

5. Close-up
Subtask 49-11-00-410-064-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Set the LIGHT SW to the Off position.
(2) Close the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-410-001).
(3) Remove the access platform(s).

Subtask 49-11-00-860-072-A ** ON A/C NOT FOR ALL

B. 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).
(4) Make an entry in the aircraft technical log book.

[Rev.10 from 2021] 2026.04.01 12:43:26 UTC