Installation of the Service Area Light

TASK 33-31-11-400-001-A
Installation of the Service Area Light

FIN: 6LJ

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 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -
(Material No.06LCG9)	Non Hardening Jointing Putty-Medium Temp. Area - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
315AL, 316AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 33-31-00-710-001-A	Operational Test of the Service Area Lighting
Service Area Light ** ON A/C NOT FOR ALL
Service Area Light ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 33-31-11-865-067-A

A. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
2001VU	LIGHT-APU	2LJ	E08

Subtask 33-31-11-860-050-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below the APU doors.
(2) Make sure that the APU doors are open:

WARNING: LOCK THE MECHANISM OF THE ACCESS DOOR 316AR WITH THE PIP PIN WHEN YOU OPEN THE ACCESS DOOR. THIS WILL PREVENT INJURY.

(a) Make sure that the APU doors 315AL and 316AR are open.
(3) Make sure that the switch 11LJ at zone 315 is set to the OFF position.

4. Procedure
Subtask 33-31-11-910-050-A ** ON A/C NOT FOR ALL

A. Preparation for Installation
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Apply the Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the mating surface of the service area light (4).
(4) Apply the Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the washers (5) and the screws (6).

Subtask 33-31-11-420-051-A ** ON A/C NOT FOR ALL

B. Installation of the Service Area Light and the Lamp
(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Make sure that all the electrical connections are clean and in the correct condition.
(3) Install the lamp (10) in the housing (11).
(4) Put the the seal (9) in position on the housing (11) and align the screw holes.
(5) Put the lens (8) in position on the seal (9).
(6) Put the grid-screen in position over the lens (8), align the screw holes and install the screws (12).
(7) Hold the service area light (4) adjacent to its correct installation position.
(8) Put the electrical connectors (1) on the terminals of the service area light (4) and install the washers (2) and the nuts (3).
(9) Put the service area light (4) in its correct installation position, align the screw holes, install the screws (6) and the washers (5).

Subtask 33-31-11-910-050-B ** ON A/C NOT FOR ALL

C. Preparation for Installation
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Apply the Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the washers (5) and the screws (4).

Subtask 33-31-11-420-051-B ** ON A/C NOT FOR ALL

D. Installation of the Service Area Light

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Make sure that all the electrical connections are clean and in the correct condition.
(3) Connect and secure the electrical connectors (2) and (3).
(4) Put the service area light (1) in the correct installation position at the structure (6).
(5) Install the washers (5) and the screws (4) and tighten.

Subtask 33-31-11-865-074-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
2001VU	LIGHT-APU	2LJ	E08

Subtask 33-31-11-710-050-A

F. Do the operational test of the service area light (Ref. AMM TASK 33-31-00-710-001).

5. Close-up
Subtask 33-31-11-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the APU access doors 315AL 316AR.
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 00:54:13 UTC