Removal of the Additional Center Tank (ACT) Refuel-Valve Canister

TASK 28-25-52-000-003-A
Removal of the Additional Center Tank (ACT) Refuel-Valve Canister

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.

FIN: 164QM ** 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 3M (10 FT)- ADJUSTABLE
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 28-10-00-910-001-A	Safety Procedures When You Do Work in a Fuel Tank
TASK 28-25-00-650-001-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 28-25-51-000-004-A	Removal of the Refuel Valve
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 57-17-11-000-003-A	Removal of the Protective Cover of the ACT-Equipment Support Door
Refuel Valve Canister 164QM ** ON A/C NOT FOR ALL
Refuel Valve Canister 164QM ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-25-52-941-055-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.
(3) Put a WARNING NOTICE(S) in position to tell persons not to operate the MLG doors.

Subtask 28-25-52-650-054-A ** ON A/C NOT FOR ALL

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

Subtask 28-25-52-865-054-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	ACT1/REFUEL & SPLY	33QU	L29
121VU	FUEL/RFL/DFL/SPLY	2QU	L24
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23
121VU	ACT XFR VALVE MAN CTL	30QH	N29
121VU	ACT1/CTL & SPLY	9QH	P29
121VU	ACT PUMP SUPPLY	25QH	Q29
** ON A/C NOT FOR ALL
121VU	FUEL/ACT XFR VLV/MOT2	66QH	J18
121VU	FUEL/ACT XFR VLV/MOT1	65QH	J17
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22
121VU	FUEL/ACT/FUEL PUMP/SPLY	25QH	Q29
** ON A/C NOT FOR ALL
121VU	ACT2/REFUEL & SPLY	34QU	L28
121VU	ACT2/CTL & SPLY	10QH	P28

Subtask 28-25-52-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the LH MLG door (Ref. AMM TASK 32-12-00-010-001).
(2) Make sure that the 460005835 SLEEVE - GROUND LOCK is installed on the LH MLG door actuating-cylinder.
(3) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zone 148.
(4) Remove the protective cover from the ACT-Equipment Support Door (Ref. AMM TASK 57-17-11-000-003).
(5) Remove the refuel valve 41QU (Ref. AMM TASK 28-25-51-000-004).

4. Procedure
Subtask 28-25-52-020-055-A ** ON A/C NOT FOR ALL

A. Removal of the Refuel Valve Canister 164QM
(1) Remove the nut (7), the screw (5), the washer (6) and disconnect the bonding straps (3) and (4).
(2) Remove the bolts (8), the washers (9) and disconnect the elbow (10).
(3) Remove and discard the O-ring (11).
(4) Remove the bolts (1), the washers (16) and disconnect the adaptor (2).
(5) Remove and discard the O-ring (15).
(6) Put the PLUG-BLANKING in each disconnected line end.
(7) Remove the screws (14).
(8) Remove the refuel valve canister (12).
(9) Remove and discard the O-ring (13).

Subtask 28-25-52-020-055-B ** ON A/C NOT FOR ALL

A. Removal of Refuel Valve Canister 164QM
(1) Remove the nut (7), the washer (4), and the screw (3) and disconnect the bonding straps (5) and (6).
(2) Remove the bolts (8), the washers (9) and disconnect the elbow (10).
(3) Remove and discard the O-ring (11).
(4) Remove the bolts (1) and the washers (17) and disconnect the adaptor (2).
(5) Remove and discard the restrictor (16).
(6) Remove and discard the O-ring (15).
(7) Put the PLUG-BLANKING in each disconnected line end.
(8) Remove the screws (14).
(9) Remove the refuel valve canister (12).
(10) Remove and discard the O-ring (13).

[Rev.10 from 2021] 2026.04.01 12:52:17 UTC