Installation of the Leak Monitor of the forward ACT

TASK 28-28-44-400-002-A
Installation of the Leak Monitor of the forward ACT

WARNING: MAKE SURE THAT YOU HAVE THE CORRECT FIRE FIGHTING EQUIPMENT AVAILABLE.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

WARNING: BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES. IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER. IF NECESSARY, GET MEDICAL HELP. AIRCRAFT FUEL IS POISONOUS.

WARNING: DO NOT GET YOUR CLOTHES SOAKED WITH FUEL.

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

ZONE: 130

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
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
192AB

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	O-RING	AIPC 28-11-82-01-160
8	O-RING	AIPC 28-11-82-01-190

D. Referenced Information

REFERENCE	DESIGNATION
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-11-00-200-003-A	Check ACT Fuel Leak Monitor for Evidence of Fuel Leakage and Correct Closure of the Valve
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 (FWD Cargo Compartment)

3. Job Set-up
Subtask 28-28-44-860-051-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
(2) Make sure that the WARNING NOTICE(S) is(are) in position on the panels that follow, to tell persons not to operate the fuel system:

Refuel/Defuel panels 800VU and 801VU
Fuel panel 40VU
Additional Center Tank (ACT) control panel 28VU.

(3) Make sure that belly fairing access-panel 192AB is removed (Ref. AMM TASK 53-35-13-000-001).

4. Procedure
Subtask 28-28-44-420-051-B ** ON A/C NOT FOR ALL

A. Installation of the Leak Monitor
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply a thin layer of Fluorosilicone base Grease-System Fuel and oil resistant - (Material No.03KBB1) to the new AIPC 28-11-82-01-160 O-RING (2) and the new AIPC 28-11-82-01-190 O-RING (8).
(5) Put the leak monitor (1) with the O-ring (2) in the correct installation position.
(6) Install the washers (4) and the bolts (3).
(7) Put the O-ring (8) on the reducer union (7).
(8) Install the reducer union (7) in the leak monitor (1).
(9) Connect the hose assembly (5) to the reducer union (7).

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE HOSE NUTS. USE ONE WRENCH TO HOLD THE FITTING AND ONE WRENCH TO LOOSEN OR TIGHTEN THE HOSE NUT. IF YOU DO NOT DO THIS, DAMAGE TO THE COMPONENTS CAN OCCUR.

(10) Install the hose nut (6) on the reducer union (7) and tighten the nut (6).

Subtask 28-28-44-720-051-A ** ON A/C NOT FOR ALL

B. Test
(1) Do the check of the ACT fuel leak monitor for a correct closure of the valve (Ref. AMM TASK 28-11-00-200-003).

5. Close-up
Subtask 28-28-44-410-051-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Install belly fairing access-panel 192AB (Ref. AMM TASK 53-35-13-400-001).

Subtask 28-28-44-860-056-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to the serviceable condition.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:17:58 UTC