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

TASK 28-25-52-400-003-A
Installation of the Additional Center Tank (ACT) Refuel-Valve Canister

WARNING: THIS PROCEDURE USES A FUEL SYSTEM ITEM THAT IS IN A CATEGORY KNOWN AS A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL). CDCCL IDENTIFIES AN ITEM THAT CAN BE THE SOURCE OF A POSSIBLE FUEL TANK IGNITION. YOU MUST KEEP ALL CDCCL ITEMS IN THE APPROVED CONFIGURATION. DAMAGE, WEAR OR CHANGES TO A CDCCL ITEM CAN CAUSE A POSSIBLE FUEL TANK EXPLOSION.

WARNING: MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

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.

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

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	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.4 and 0.3 m.daN (35.40 and 26.55 lbf.in )
No specific	Torque wrench: range to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.01ABA1)	Turbine Fuel-- Kerosene -
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
11	O-RING	AIPC 28-25-05-02-230
15	O-RING	AIPC 28-25-05-02-230
11	O-RING	AIPC 28-25-85-02-040
15	O-RING	AIPC 28-25-85-02-040
13	ORING	AIPC 28-28-05-02-020
13	ORING	AIPC 28-28-85-02-020
11	O-RING	AIPC 28-28-85-12-040
15	O-RING	AIPC 28-28-85-13-040
16	RESTRICTOR	AIPC 28-28-85-13-050
15	ORING	AIPC 28-28-85-29-060
16	RESTRCTR	AIPC 28-28-85-29-070

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
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 28-25-00-869-001-A	Fuel Transfer
TASK 28-25-51-000-004-A	Removal of the Refuel Valve
TASK 28-25-51-400-004-A	Installation of the Additional Center Tank (ACT) Refuel Valve
TASK 28-42-00-740-001-A	Status Report (BITE)
TASK 28-46-00-740-001-A	Functional (BITE) Test
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 57-17-11-000-003-A	Removal of the Protective Cover of the ACT-Equipment Support Door
TASK 57-17-11-400-003-A	Installation 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 28-25-52-941-056-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) Make sure that the SAFETY BARRIER(S) is (are) in position.
(3) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to operate the MLG doors.

Subtask 28-25-52-860-054-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that the center tank is defueled (Ref. AMM TASK 28-25-00-650-001).
(2) Make sure that the remaining fuel has been drained from the center tank (Ref. AMM TASK 28-25-00-650-003).
(3) Make sure that the LH MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(4) Make sure that the 460005835 SLEEVE - GROUND LOCK is installed on the LH MLG door actuating-cylinder.
(5) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at zone 148.
(6) Make sure that the protective cover of the ACT-equipment support door is removed (Ref. AMM TASK 57-17-11-000-003).
(7) Make sure that the refuel valve 41QU has been removed (Ref. AMM TASK 28-25-51-000-004).

Subtask 28-25-52-865-053-A ** ON A/C NOT FOR ALL

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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

4. Procedure
Subtask 28-25-52-420-056-A ** ON A/C NOT FOR ALL

A. Preparation for Installation
(1) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Lubricate the new parts that follow with Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) :

The O-ring (11)
The O-ring (13)
The O-ring (15).

(3) Install the AIPC 28-28-05-02-020 ORING (13) or AIPC 28-28-85-02-020 ORING (13) in the groove on the face of the refuel valve canister (12).

Subtask 28-25-52-420-057-A ** ON A/C NOT FOR ALL

B. Installation of the Refuel Valve Canister 164QM
(1) Install the refuel valve canister (12) in position.
(2) Install the screws (14).
(3) Bonding check:

WARNING: THIS INSTRUCTION IS APPLICABLE TO A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL) ITEM. CAREFULLY OBEY ALL GIVEN INSTRUCTIONS WHEN YOU DO THIS STEP. IF YOU DO NOT OBEY THESE INSTRUCTIONS, A DANGEROUS CONDITION CAN OCCUR THAT CAN CAUSE A POSSIBLE FUEL TANK EXPLOSION.

(a) Do a bonding check of screws (14) (Ref. AMM TASK 20-28-00-912-802).
(4) Remove the blanking plugs from the disconnected line ends.
(5) Install the AIPC 28-25-05-02-230 O-RING (15) or AIPC 28-25-85-02-040 O-RING (15) in the groove in the adaptor (2).
(6) Connect the adaptor (2) to the refuel valve canister (12) with the bolts (1) and the washers (16).
(7) Install the AIPC 28-25-05-02-230 O-RING (11) or AIPC 28-25-85-02-040 O-RING (11) in the groove in the elbow (10).
(8) Connect the elbow (10) to the refuel valve canister (12) with the bolts (8) and the washers (9).
(9) Put the bonding straps (3) and (4) in position on the refuel valve canister (12).
(10) Install the screw (5), the washer (6) and the nut (7) (Ref. AMM TASK 20-28-00-912-802).
(11) Make sure that the bonding straps (3) and (4) are correctly bonded:
(a) Do a bonding check between the bonding straps (3) and (4) and the canister (12) (Ref. AMM TASK 20-28-00-912-802). The bonding resistance must be less than 10 milliohms.

Subtask 28-25-52-420-057-B ** ON A/C NOT FOR ALL

B. Installation of Refuel Valve Canister 164QM
(1) Install the refuel valve canister (12) in position.
(2) Install and tighten the screws (14).
(3) Bonding check:

(a) Do a bonding check of the screws (14) (Ref. AMM TASK 20-28-00-912-802).
(4) Remove the PLUG-BLANKING from each disconnected line end.
(5) Install the new AIPC 28-28-85-13-050 RESTRICTOR (16) or AIPC 28-28-85-29-070 RESTRCTR (16) and the new AIPC 28-28-85-13-040 O-RING (15) or AIPC 28-28-85-29-060 ORING (15) in the groove in the adaptor (2).
(6) Connect the adaptor (2) to the refuel valve canister (12) with the bolts (1) and the washers (17).
(7) TORQUE the bolts (1) opposite to each other to between 0.4 and 0.3 m.daN (35.40 and 26.55 lbf.in )

.
(8) Do a bonding check of the bolts (1) (Ref. AMM TASK 20-28-00-912-802).
(9) Install the new AIPC 28-28-85-12-040 O-RING (11) in the groove in the elbow (10).
(10) Connect the elbow (10) to the refuel valve canister (12) with the bolts (8) and the washers (9).
(11) TORQUE the bolts (8) opposite to each other to between 0.4 and 0.3 m.daN (35.40 and 26.55 lbf.in )

.
(12) Do a bonding check of the bolts (8) (Ref. AMM TASK 20-28-00-912-802).
(13) Put the bonding straps (5) and (6) in position on the refuel valve canister (12).
(14) Install the screw (3), the washer (4) and the nut (7).
(15) TORQUE the screw (3) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )

.
(16) Make sure that the bonding straps (5) and (6) are correctly bonded:
(a) Do a bonding check between the bonding straps (5) and (6) and the canister (12) (Ref. AMM TASK 20-28-00-912-802). The bonding resistance must be less than 10 milliohms.

Subtask 28-25-52-790-052-A ** ON A/C NOT FOR ALL

C. Test(s)

Refuel Valve Canister 164QM ** ON A/C NOT FOR ALL

(1) Make sure there are no leaks at the interface of the refuel valve canister (12) with the structure.

Subtask 28-25-52-410-053-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Install the refuel valve 41QU (Ref. AMM TASK 28-25-51-400-004).
(2) Install the protective cover for the ACT-equipment support door (Ref. AMM TASK 57-17-11-400-003).
(3) Make sure that the work area is clean and clear of tools and other items.

Subtask 28-25-52-650-055-A ** ON A/C NOT FOR ALL

E. Fuel Configuration
(1) Refuel or transfer a minimum of 3000 kg (6614 lb) of fuel into the center tank (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-869-001).

Subtask 28-25-52-865-055-A ** ON A/C NOT FOR ALL

F. Remove the safety clip(s) and the tag(s) and close 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 28-25-52-740-050-A ** ON A/C NOT FOR ALL

G. BITE Test

NOTE: These tests are only applicable if you do maintenance work in the center wing-box area.

(1) Do a BITE test of the FQI system (Ref. AMM TASK 28-42-00-740-001).
(2) Do a BITE test of the FLSS system (Ref. AMM TASK 28-46-00-740-001).

5. Close-up
Subtask 28-25-52-650-056-A ** ON A/C NOT FOR ALL

A. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).

Subtask 28-25-52-410-054-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Remove the access platform(s).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the LH MLG door (Ref. AMM TASK 32-12-00-410-001).

Subtask 28-25-52-942-054-A ** ON A/C NOT FOR ALL

C. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 00:07:05 UTC