Installation of the Leak Monitor

TASK 28-13-44-400-001-A
Installation of the Leak Monitor

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

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

FIN: 500QM

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03KBB1)	Fluorosilicone base Grease-System Fuel and oil resistant -

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
191JB

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	O-RING	AIPC 28-13-03-04-120
3	O-RING	AIPC 28-13-03-04-140
5	O-RING	AIPC 28-13-83-04-150
3	O-RING	AIPC 28-13-83-04-170

D. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 53-35-13-000-001-A	Removal of the Belly Fairing Access Panels
TASK 53-35-13-400-001-A	Installation of the Belly Fairing Access Panels
Leak Monitor

3. Job Set-up
Subtask 28-13-44-865-052-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	LIGHTING/EXT LT/BEACON/LOWER	5LV	U03

Subtask 28-13-44-860-050-A

B. Aircraft Maintenance Configuration
(1) Make sure that the the access panel 191JB is removed (Ref. AMM TASK 53-35-13-000-001).
(2) Obey the fuel safety procedure (Ref. AMM TASK 28-00-00-910-001).

4. Procedure
Subtask 28-13-44-420-050-A

A. Installation of the Leak Monitor 500QM
(1) Put a new AIPC 28-13-03-04-120 O-RING (5) or AIPC 28-13-83-04-150 O-RING (5) with a thin layer of Fluorosilicone base Grease-System Fuel and oil resistant - (Material No.03KBB1) on the leak monitor (4).
(2) Install the leak monitor (4) with the screws (6), the washers (7) and the nuts (8).
(3) Do a bonding check (Ref. AMM TASK 20-28-00-912-802).
(4) Remove the blanking plugs from the disconnected line ends.
(5) Put a new AIPC 28-13-03-04-140 O-RING (3) or AIPC 28-13-83-04-170 O-RING (3) with a thin layer of Fluorosilicone base Grease-System Fuel and oil resistant - (Material No.03KBB1) on the reducer union (2).
(6) Install the reducer union (2) to the leak monitor (4).
(7) Connect the pipe (1) to the leak monitor (4).

5. Close-up
Subtask 28-13-44-410-050-A

A. Close Access
(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 the electrical connector to the lower beacon/strobe light.
(4) Make sure that the work area is clean and clear of tools and other items.
(5) Install the access panel 191JB on the belly fairing (Ref. AMM TASK 53-35-13-400-001).
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 28-13-44-865-051-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	LIGHTING/EXT LT/BEACON/LOWER	5LV	U03

[Rev.10 from 2021] 2026.04.02 06:17:14 UTC