Reactivation of the ACT Fuel Inlet Valve

TASK 28-28-00-440-004-A
Reactivation of the ACT Fuel Inlet Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

FIN: 166QM1 ** ON A/C NOT FOR ALL
FIN: 166QM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
MMEL 28-28-09D
ACT 1 INLET VALVE
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	1	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-11-49-000-001-A	Removal of the ACT Integrated Impact Wall
TASK 28-11-49-400-001-A	Installation of the ACT Integrated Impact Wall
TASK 28-28-34-000-001-A	Removal of the ACT Fuel Inlet Valve
TASK 28-28-34-400-001-A	Installation of the ACT Fuel Inlet Valve
TASK 28-28-54-000-001-A	Removal of the ACT Fuel Inlet Valve Actuator
TASK 28-28-54-400-001-A	Installation of the ACT Fuel Inlet Valve Actuator
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TSM 28-28-00-810-802	Fuel - ACT 1 Manual Transfer Failure (On The Ground)
ACT Fuel Inlet Valve 166QM

3. Job Set-up
Subtask 28-28-00-860-182-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001).
(2) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(3) On the APU section of the 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 the HYD/FUEL panel 40VU, make sure that all the L TK PUMPS and R TK PUMPS pushbutton switches are released (the OFF legends are on).
(5) Put a WARNING NOTICE(S) in position:

On the APU section of the overhead panel 25VU, to tell persons not to operate the APU/MASTER SW pushbutton switch.
On the FUEL section of the panel 40VU, to tell persons not to operate the fuel system.
On the ENG/APU FIRE panel located on the overhead panel 20VU, to tell persons not to operate the fire extinguishing system.

Subtask 28-28-00-010-058-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-001).
(2) Put an ACCESS PLATFORM 2M (6 FT) in position at the aft cargo door opening.
(3) Loosen the quick-release fasteners to remove the left Integrated Impact Wall (Ref. AMM TASK 28-11-49-000-001).

Subtask 28-28-00-865-068-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	FUEL/HI/LVL/SPLY	1QJ	L25
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23

4. Procedure
Subtask 28-28-00-440-053-A ** ON A/C NOT FOR ALL

A. Reactivation of the ACT Fuel Inlet Valve
(1) If the actuator of the ACT Fuel Inlet Valve is unserviceable:
(a) Disconnect the electrical connector (33) from the electrical receptacle (34).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(c) Replace the actuator (35) of the Fuel Inlet Valve (Ref. AMM TASK 28-28-54-000-001) (Ref. AMM TASK 28-28-54-400-001).
(2) If the ACT Fuel Inlet Valve (38) has a failure in the open position, replace the ACT Fuel Inlet Valve (Ref. AMM TASK 28-28-34-000-001) (Ref. AMM TASK 28-28-34-400-001).
(3) If the fault continues:

trouble shoot the Fuel Inlet Valve of the ACT as applicable TSM 28-28-00-810-802.

Subtask 28-28-00-440-053-B ** ON A/C NOT FOR ALL

A. Reactivation of the ACT Fuel Inlet Valve

NOTE: The subsequent procedure is the same for each installed ACT. Therefore only one procedure is given. Differences between each ACT are given where applicable.

(1) If the actuator of the ACT Fuel Inlet Valve is unserviceable:
(a) Disconnect the electrical connector (33) from the electrical receptacle (34).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(c) Replace the actuator (35) of the Fuel Inlet Valve (Ref. AMM TASK 28-28-54-000-001) (Ref. AMM TASK 28-28-54-400-001).
(2) If the ACT Fuel Inlet Valve (38) has a failure in the open position, replace the ACT Fuel Inlet Valve (Ref. AMM TASK 28-28-34-000-001) (Ref. AMM TASK 28-28-34-400-001).
(3) If the fault continues:

trouble shoot the Fuel Inlet Valve of the ACT as applicable TSM 28-28-00-810-802.

5. Close-up
Subtask 28-28-00-865-069-A ** ON A/C NOT FOR ALL

A. 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/HI/LVL/SPLY	1QJ	L25
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23

Subtask 28-28-00-410-055-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to the serviceable condition.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the left Integrated Impact Wall (Ref. AMM TASK 28-11-49-400-001).
(3) Remove the access platform(s).
(4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
(5) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(6) Remove the WARNING NOTICE(S).
(7) Close the applicable entry in the aircraft technical log book.

[Rev.10 from 2021] 2026.04.02 06:17:49 UTC