Removal of the Fuel Crossfeed Valve - Drive Assembly

TASK 28-23-41-000-002-A
Removal of the Fuel Crossfeed Valve - Drive Assembly

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: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

ZONE: 142
ZONE: 148
FIN: 10QM

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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
142	WING CENTER BOX
148	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 28-23-51-000-001-A	Removal of the Crossfeed Valve Actuator
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
Crossfeed Valve Drive Assembly ** ON A/C NOT FOR ALL
Component location
Crossfeed Valve Drive Assembly ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-23-41-941-052-A

A. Safety Precautions

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

(1) Put the safety barriers in position.

Subtask 28-23-41-860-051-A

B. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(1) On the panel 40VU, make sure that:

the FUEL/X FEED, P/BSW 4QE is not pushed in (the ON and OPEN legends of the P/BSW are off).

(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 28-23-41-010-052-A

C. Get access to the avionics compartment.
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the main door of the right main gear.
(2) Open the main door of the right main gear (Ref. AMM TASK 32-12-00-010-001).

4. Procedure
Subtask 28-23-41-020-053-A ** ON A/C NOT FOR ALL

A. Removal of the Fuel Crossfeed Valve (10QM) - Drive Assembly
(1) Remove the crossfeed valve actuator (5QE) (Ref. AMM TASK 28-23-51-000-001).
(2) Remove the nut (6), the washer (5), the bolt (4), the washer (3) and the bonding lead (2).
(3) Hold the drive assembly (7) and remove the nuts (1).
(4) Disengage and remove the drive assembly (7) from its position.
(5) Remove the gasket (8).

Subtask 28-23-41-020-053-B ** ON A/C NOT FOR ALL

A. Removal of the Fuel Crossfeed Valve (10QM) - Drive Assembly
(1) Remove the crossfeed valve actuator (5QE) (Ref. AMM TASK 28-23-51-000-001).
(2) Remove the nuts (1), the bonding lead (2) and the drive assembly (3).

[Rev.10 from 2021] 2026.04.02 06:17:33 UTC