Removal of the Additional Center Tank (ACT) Fuel Inlet-Valve-Actuator

TASK 28-28-54-000-003-A
Removal of the Additional Center Tank (ACT) Fuel Inlet-Valve-Actuator

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

ZONE: 150
ZONE: 160
FIN: 94QH1 ** ON A/C NOT FOR ALL
FIN: 94QH2 ** 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	1	ACCESS PLATFORM 2M (6 FT)
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT
826

C. Referenced Information

REFERENCE	DESIGNATION
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 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Actuator of the Fuel Inlet Valve
FOR [94QH1] (ACTUATOR-FUEL INLET VALVE, ACT1)
TASK 28-11-27-000-003-A	Removal of the Additional Center Tank No.2 (ACT AFT2)
FOR [94QH2] (ACTUATOR-FUEL INLET VALVE, ACT2)
TASK 28-11-49-000-002-A	Removal of the Additional Center Tank (ACT) Integrated Impact Wall

3. Job Set-up
Subtask 28-28-54-860-054-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) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(3) On refuel/defuel control panels 801VU and 800VU, fuel control panel 40VU and ACT control panel 28VU:
(a) Put the WARNING NOTICE(S) to tell persons not to operate the refuel/defuel system.

Subtask 28-28-54-865-054-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	FUEL/ACT AIR SOV/MAN/SPLY	64QH	J20
121VU	FUEL/ACT AIR SOV/AUTO/SPLY	63QH	J19
121VU	FUEL/ACT XFR VLV/MOT2	66QH	J18
121VU	FUEL/ACT XFR VLV/MOT1	65QH	J17
121VU	FUEL/INLET VLV MOT2 AUTO SP AFT 2	44QH2	K16
121VU	FUEL/INLET VLV MOT2 AUTO SP AFT 1	44QH1	K15
121VU	FUEL/INLET VLV/MOT1/AFT 2	84QH	L29
121VU	FUEL/INLET VLV/MOT1/MAN SPLY/AFT 1	46QH	L28
121VU	FUEL/HI/LVL/SPLY	1QJ	L24
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22
121VU	FUEL/ACT VENT VLV/MAN/SPLY	62QH	L21
121VU	FUEL/ACT VENT VLV/AUTO/SPLY	61QH	L20
121VU	FUEL/INLET VLV MAN CTL SPLY AFT 2	81QH	L16
121VU	FUEL/INLET VLV MAN CTL SPLY AFT 1	45QH	L15
121VU	FUEL/ACT/FUEL PUMP/SPLY	25QH	Q29

Subtask 28-28-54-010-053-D ** ON A/C NOT FOR ALL

C. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) in position below aft cargo compartment door 826.
(2) Open aft cargo compartment door 826 (Ref. AMM TASK 52-30-00-860-001).
(3) Set CARGO COMPT LIGHT switch 8LU to the ON position.
(4) FOR [94QH1] (ACTUATOR-FUEL INLET VALVE, ACT1)
(a) Remove the Additional Center Tank (ACT) AFT2 (Ref. AMM TASK 28-11-27-000-003).
(5) FOR [94QH2] (ACTUATOR-FUEL INLET VALVE, ACT2)
(a) Remove the integrated impact wall from the ACT AFT2 (Ref. AMM TASK 28-11-49-000-002).

4. Procedure
Subtask 28-28-54-020-052-A ** ON A/C NOT FOR ALL

A. Removal of the ACT Fuel Inlet-Valve-Actuator

NOTE: The removal procedure is the same for each fuel inlet valve-actuator.

(1) Disconnect the electrical connectors:

CAUTION: TO PREVENT POSSIBLE CROSS-CONNECTION OF THE ELECTRICAL CONNECTORS, MAKE SURE THAT PLUGS AND RECEPTACLES ARE CLEARLY IDENTIFIED.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(a) Put the identification marks on the electrical connectors (5) and receptacles (6) before you disconnect them. This is important for the subsequent installation procedure.

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.

(b) Disconnect the electrical connectors (5) from the receptacles (6).
(c) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Loosen the screw (3), then open and remove the V-clamp (2) from the ACT fuel inlet-valve-actuator (1).
(3) Remove the ACT fuel inlet-valve-actuator (1) from the ACT fuel inlet valve (4).

[Rev.10 from 2021] 2026.04.02 06:18:00 UTC