Installation of the ACT Fuel-Transfer Pump-Element

TASK 28-28-51-400-001-A
Installation of the ACT Fuel-Transfer Pump-Element

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

WARNING: BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES. IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER. IF NECESSARY, GET MEDICAL HELP. AIRCRAFT FUEL IS POISONOUS.

WARNING: DO NOT GET YOUR CLOTHES SOAKED WITH FUEL.

WARNING: MAKE SURE THAT YOU HAVE THE CORRECT FIRE FIGHTING EQUIPMENT AVAILABLE.

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

ZONE: 147
ZONE: 150
FIN: 1QH ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Consumable Materials

REFERENCE	DESIGNATION
(Material No.01ABA1)	Turbine Fuel-- Kerosene -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
147	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
734

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
1	O-RING	AIPC 28-28-03-01-140
3	O-RING	AIPC 28-28-03-01-150
2	O-RING	AIPC 28-28-03-01-160
11	O-RING	AIPC 28-28-83-01-150
13	O-RING	AIPC 28-28-83-01-160
12	O-RING	AIPC 28-28-83-01-170

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 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 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-869-001-A	Fuel Transfer
TASK 28-28-00-710-001-A	Operational Check of the ACT Manual Transfer System
TASK 28-28-00-710-008-A	Operational Check of the ACT Manual Transfer System (AFT Cargo-Compartment)
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
ACT Fuel-Transfer Pump-Element ** ON A/C NOT FOR ALL
ACT Fuel-Transfer Pump-Element ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-28-51-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) 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 located on overhead panel 20VU, to tell persons not to operate the fire extinguishing system.
On Additional Center Tank (ACT) control panel 28VU, to tell persons not to operate the ACT transfer system.

(6) If applicable, make sure that the safety barriers are in position.
(7) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to operate the main gear doors.
(8) Make sure that left Main Landing Gear (MLG) door 734 is open (Ref. AMM TASK 32-12-00-010-001).
(9) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position at left MLG door 734.
(10) Make sure that the protective cover of the ACT-equipment support door is removed (Ref. AMM TASK 57-17-11-000-003).

Subtask 28-28-51-865-051-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
121VU	ACT PUMP SUPPLY	25QH	Q29
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22
121VU	FUEL/ACT/FUEL PUMP/SPLY	25QH	Q29

4. Procedure
Subtask 28-28-51-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Pump Element
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to the new AIPC 28-28-03-01-140 O-RING (1) and AIPC 28-28-03-01-160 O-RING (2) and AIPC 28-28-03-01-150 O-RING (3).
(5) Install the three new O-rings (1), (2) and (3) on the pump.
(6) Put the pump (7) in position and turn the limit stop (8) to hold the pump (7).
(7) Install the mounting bars (5) and the bolts (6).
(8) Safety the bolts (6) with lockwire 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(9) Remove the CAP-BLANKING from each electrical connector and receptacle.
(10) Make sure that all the electrical connections are clean and in the correct condition.
(11) Connect the electrical connector (4).

Subtask 28-28-51-420-050-D ** ON A/C NOT FOR ALL

A. Installation of the Pump Element
(1) Do an inspection of the component interfaces and the adjacent area.
(2) Clean the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Remove the PLUG-BLANKING from each disconnected line end.
(5) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to the new AIPC 28-28-83-01-150 O-RING (11), AIPC 28-28-83-01-170 O-RING (12) and AIPC 28-28-83-01-160 O-RING (13).
(6) Install three new O-rings (11), (12) and (13) on the ACT fuel-transfer pump (10).
(7) Put the ACT fuel-transfer pump (10) in position and turn the limit stop (14) to hold the ACT fuel-transfer pump (10).
(8) Install the spacers (6), mounting bars (9), washers (7) and bolts (8).
(9) Tighten the bolts (8).

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(10) Safety the bolts (8) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(11) Prepare the equipment for electrical bonding (Ref. AMM TASK 20-28-00-912-802).
(12) Install the bonding strap (3) on the ACT fuel-transfer pump (10) with the washer (2), the bolt (1) and the nut (4).
(13) Tighten the nut (4).
(14) Apply surface protection on the nut (4), bolt (1), washer (2) and bonding strap (3) (Ref. AMM TASK 20-28-00-912-802).

CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE COMPONENT DURING THE PROCEDURE. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO COMPONENT.

(15) Remove the CAP-BLANKING from each electrical connector and receptacle.
(16) Make sure that all the electrical connections are clean and in the correct condition.

CAUTION: MAKE SURE THAT THE BONDING STRAP(S) IS(ARE) CONNECTED BEFORE YOU CONNECT THE ELECTRICAL CONNECTOR(S).

(17) Connect the electrical connector (5) to the ACT fuel-transfer pump (10).

Subtask 28-28-51-865-052-A ** ON A/C NOT FOR ALL

B. 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
121VU	ACT PUMP SUPPLY	25QH	Q29
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22
121VU	FUEL/ACT/FUEL PUMP/SPLY	25QH	Q29

Subtask 28-28-51-650-050-A ** ON A/C NOT FOR ALL

C. 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 28-28-51-710-050-A ** ON A/C NOT FOR ALL

D. Test(s)
(1) If the ACT(s) is (are) installed:
(a) Do an operational check of the ACT manual transfer-system (Ref. AMM TASK 28-28-00-710-007).
(b) Examine the fuel transfer pump-element for fuel leaks. No fuel leakage is permitted.

Subtask 28-28-51-710-050-B ** ON A/C NOT FOR ALL

D. Test(s)
(1) If the ACT(s) is (are) installed:
(a) Do an operational check of the ACT manual transfer-system (Ref. AMM TASK 28-28-00-710-001).
(b) Examine the fuel transfer pump-element for fuel leaks. A fuel leakage is not permitted.

5. Close-up
Subtask 28-28-51-410-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the protective cover of the ACT-equipment support door (Ref. AMM TASK 57-17-11-400-003).
(3) Remove the access platform(s).
(4) Close left MLG door 734 (Ref. AMM TASK 32-12-00-410-001).
(5) Remove the WARNING NOTICE(S).
(6) If you installed the safety barriers, remove them.

Subtask 28-28-51-860-052-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

[Rev.10 from 2021] 2026.04.02 07:03:41 UTC