Installation of the ACT Fuel Transfer-Valve

TASK 28-28-33-400-001-A
Installation of the ACT Fuel Transfer-Valve

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: OBEY THE FUEL SAFETY PROCEDURES.

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

ZONE: 140
FIN: 165QM ** 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 2M (6 FT)
No specific	AR	CONTAINER 1 L (1/4 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.17 and 0.13 m.daN (15.04 and 11.50 lbf.in )
No specific	Torque wrench: range to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.01ABA1)	Turbine Fuel-- Kerosene -
(Material No.03JBA1)	Silicone base Grease-General Purpose - -
(Material No.06ABA1)	Polysulfide Sealant-Fuel Tank Brushable -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
140	CENTER WING
148AZ

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
10	O-RING	AIPC 28-28-05-03-020
2	PACKINGS	AIPC 28-28-05-06-110
12	O-RING	AIPC 28-28-33-01-010
11	O-RING	AIPC 28-28-85-03-020
3	O-RINGS	AIPC 28-28-85-06-110
2	RETAINING RINGS	AIPC 28-28-85-06-130
2	RETAINING RINGS	AIPC 28-28-85-06-250

E. 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 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 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-710-006-A	Operational Test of the ACT Fuel Transfer-Valve
TASK 28-25-00-869-001-A	Fuel Transfer
TASK 28-28-53-000-001-A	Removal of the ACT Transfer-Valve Actuator
TASK 28-28-53-400-001-A	Installation of the ACT Transfer-Valve Actuator
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 57-17-11-000-001-B	Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door
TASK 57-17-11-400-001-B	Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door
ACT Fuel Transfer-Valve ** ON A/C NOT FOR ALL
ACT Fuel Transfer-Valve ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-28-33-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) When you do maintenance work on the fuel system you must obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
(2) Make sure that the aircraft electrical circuits are energized.
(Ref. AMM TASK 24-41-00-861-002).
(3) On the APU section of overhead panel 25VU, make sure that the APU/MASTER SW pushbutton switch is released (the ON legend is off).
(4) On the FUEL section of panel 40VU, make sure that all the L TK PUMPS and R TK PUMPS pushbutton switches are released (the OFF legends are on).
(5) Make sure that the WARNING NOTICE(S) is (are) in position:

On the APU section of overhead panel 25VU to tell persons not to operate the APU/MASTER SW pushbutton switch
On the FUEL section of panel 40VU to tell persons not to operate the fuel system
On the ENG/APU FIRE panel on overhead panel 20VU to tell persons not to operate the fire extinguishing system.
On the Additional Center Tank (ACT) section of control panel 28VU to tell persons not to operate the fuel system.

(6) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to operate the MLG doors.
(7) Make sure that the fuel center tank is defueled (Ref. AMM TASK 28-25-00-650-001).
(8) Make sure that the right MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(9) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position at the right MLG door.
(10) Make sure that the ACT transfer-valve actuator is removed (Ref. AMM TASK 28-28-53-000-001).
(11) Make sure that access cover 148AZ is removed (Ref. AMM TASK 57-17-11-000-001).
(12) Make sure that the CONTAINER 1 L (1/4 USGAL) is in position below the valve.

Subtask 28-28-33-865-051-A ** ON A/C NOT FOR ALL

B. 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	FUEL/RFL/DFL/SPLY	2QU	L24
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22

4. Procedure
Subtask 28-28-33-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Transfer Valve
(1) Preparation before Installation
(a) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) on the new packings (2).
(b) Install the AIPC 28-28-05-06-110 PACKINGS (2) on the valve (9).
(c) Apply Silicone base Grease-General Purpose - - (Material No.03JBA1) on the shaft end of the valve (9).
(2) Install the valve (9) on the lines (1) and (4).

NOTE: Make sure that the valve (9) is in the closed position.

(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Play at the connections between the lines (1) and (4) will help you connect the lines to the valve (9).
(c) Install the new AIPC 28-28-05-03-020 O-RING (10) in the groove of the valve (9).
(d) Install the new AIPC 28-28-33-01-010 O-RING (12) in the groove of the valve (9).
(e) Install the screws (11) and tighten.
(f) Apply Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) on the head of the screws.
(g) Tighten the nuts (3) with your hand.
(h) Install the bonding straps (7) with the bolts (5), the washers (6) and the nuts (8).
(i) TORQUE the nuts (8) to between 0.17 and 0.13 m.daN (15.04 and 11.50 lbf.in )

.
(j) Do a check of the electrical bonding (Ref. AMM TASK 20-28-00-912-802).

Subtask 28-28-33-420-050-D ** ON A/C NOT FOR ALL

A. Installation of the ACT Fuel Transfer-Valve
(1) Apply Silicone base Grease-General Purpose - - (Material No.03JBA1) on the new AIPC 28-28-85-06-110 O-RINGS (3) and the new AIPC 28-28-85-03-020 O-RING (11).
(2) Install the new AIPC 28-28-85-06-110 O-RINGS (3) on the ACT fuel transfer-valve (10).
(3) Install the new AIPC 28-28-85-06-130 RETAINING RINGS (2)AIPC 28-28-85-06-250 RETAINING RINGS (2) in the ACT fuel transfer-valve (10).
(4) Apply Silicone base Grease-General Purpose - - (Material No.03JBA1) on the shaft end of the ACT fuel transfer-valve (10).
(5) Apply Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) on the heads of the screws (12).
(6) Install the ACT fuel transfer-valve (10) on the lines (1) and (5). Make sure that the ACT fuel transfer-valve (10) is in the closed position.

NOTE: The play at the connections between the lines (1) and (5) will help you to connect the lines to the ACT fuel transfer-valve (10).

(7) Remove the PLUG-BLANKING from each disconnected line end.
(8) Install the new AIPC 28-28-85-03-020 O-RING (11) in the groove of the ACT fuel transfer-valve (10).
(9) Put the ACT fuel transfer-valve (10) in position on the structure.
(10) Install the screws (12).
(11) TORQUE the screws (12) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )

.
(12) Install the bonding straps (8) with the bolts (6), the washers (7) and the nuts (9).
(13) TORQUE the nuts (9) to between 0.17 and 0.13 m.daN (15.04 and 11.50 lbf.in )

.
(14) Do a check of the electrical bonding (Ref. AMM TASK 20-28-00-912-802).

Subtask 28-28-33-420-051-A ** ON A/C NOT FOR ALL

B. Install the ACT transfer-valve actuator (Ref. AMM TASK 28-28-53-400-001).

Subtask 28-28-33-410-051-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that there are no unwanted objects and materials, tools or other equipment in the center tank.
(2) Install access cover 148AZ (Ref. AMM TASK 57-17-11-400-001).

Subtask 28-28-33-865-052-A ** ON A/C NOT FOR ALL

D. 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	FUEL/RFL/DFL/SPLY	2QU	L24
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22

Subtask 28-28-33-650-050-A ** ON A/C NOT FOR ALL

E. 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 28-28-33-710-050-A ** ON A/C NOT FOR ALL

F. Operational Test
(1) Do an operational test of the ACT fuel transfer-valve (Ref. AMM TASK 28-25-00-710-006).
(2) Make sure that there is no leakage at the valve (9) and the connections between lines (1) and (4).

Subtask 28-28-33-710-050-B ** ON A/C NOT FOR ALL

F. Operational Test
(1) Do an operational test of the ACT fuel transfer-valve (Ref. AMM TASK 28-25-00-710-006).
(2) Make sure that there is no leakage at the ACT fuel transfer-valve (10) and the connections between the lines (1) and (5).

5. Close-up
Subtask 28-28-33-942-050-A ** ON A/C NOT FOR ALL

A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the container.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 28-28-33-410-050-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:17:55 UTC