Removal of the Air-Inlet Valve

TASK 28-25-57-000-001-A
Removal of the Air-Inlet Valve

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.

FIN: 161QM ** ON A/C NOT FOR ALL
FIN: 162QM ** 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	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY BARRIER(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 28-10-00-910-001-A	Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A	Access to the Fuel Tanks and the Work Areas
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-650-003-A	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-650-003-A-01	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-42-000-001-A	Removal of the Refuel Diffuser Assembly - Wing Tanks
TASK 57-27-11-000-002-A	Removal of the Access Panel
Air-Inlet Valve

3. Job Set-up
Subtask 28-25-57-941-053-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.

(1) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank.
(2) Put the SAFETY BARRIER(S) in position.

Subtask 28-25-57-650-053-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Defuel the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001).
(2) Drain the remaining fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).

Subtask 28-25-57-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position below the applicable access panel 540KB (640KB).
(2) Remove the applicable access panel 540KB (640KB) (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-002).
(3) Remove the applicable refuel diffuser (Ref. AMM TASK 28-25-42-000-001).

4. Procedure
Subtask 28-25-57-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Air-Inlet Valve 161QM (162QM)

Air-Inlet Valve ** ON A/C NOT FOR ALL

(1) Remove the nut (4), the bolt (3) and disconnect the bonding lead (2) from the air-inlet valve (7).
(2) Loosen the union (8) and carefully disconnect the pipe (1) from the air-inlet valve (7).
(3) Hold the air-inlet valve (7), remove the bolts (5) and the air-inlet valve (7) from the bracket (6).
(4) Put the PLUG-BLANKING in each disconnected line end.

[Rev.10 from 2021] 2026.04.02 06:17:43 UTC