Removal of the Leak Monitor of the aft ACT

TASK 28-28-44-000-003-A
Removal of the Leak Monitor of the aft 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.

ZONE: 150
FIN: 254QM ** ON A/C NOT FOR ALL
FIN: 255QM ** ON A/C NOT FOR ALL

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

REFERENCE	QTY	DESIGNATION
No specific	AR	PLUG - BLANKING
No specific	AR	WARNING NOTICE(S)
98A28104000000	1	PURGER - WATER DRAIN

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
197AB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 53-35-13-000-001-A	Removal of the Belly Fairing Access Panels
Leak Monitor (AFT Cargo Compartment)

3. Job Set-up
Subtask 28-28-44-860-058-A ** 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) Put the WARNING NOTICE(S) on the panels that follow, to tell persons not to operate the fuel system:

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

Subtask 28-28-44-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Remove belly fairing access-panel 197AB (Ref. AMM TASK 53-35-13-000-001).

4. Procedure
Subtask 28-28-44-020-052-B ** ON A/C NOT FOR ALL

A. Removal of the Leak Monitor
(1) With the 98A28104000000 PURGER - WATER DRAIN, drain the leak monitor (1).

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.

(2) Loosen the nut (6) and disconnect the hose assembly (7).
(3) Remove the reducer union (5) and the packing (4). Discard the packing (4).
(4) Remove the bolts (2) and the washers (3).
(5) Remove the leak monitor (1).
(6) Put the PLUG-BLANKING in each disconnected line end.

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