Installation of the ACT Air Shut-Off Valve

TASK 28-28-36-400-001-A
Installation of the ACT Air Shut-Off Valve

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.

FIN: 168QM ** 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	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 28-28-56-000-001-A	Removal of the ACT Air Shut-Off Valve Actuator
TASK 28-28-56-400-001-A	Installation of the ACT Air Shut-Off Valve Actuator
ACT Air Shut-off Valve

3. Job Set-up
Subtask 28-28-36-860-051-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 ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(3) Make sure that a WARNING NOTICE(S) is in position on:

the refuel/defuel panel 801VU,
the fuel panel 40VU,
to tell persons not to operate the refuel/defuel system.

Subtask 28-28-36-010-053-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the Actuator of the Air Shut-Off Valve is removed (Ref. AMM TASK 28-28-56-000-001).

Subtask 28-28-36-865-051-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/HI/LVL/SPLY	1QJ	L25
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

4. Procedure
Subtask 28-28-36-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Air Shut-Off Valve
(1) Remove the PLUG-BLANKING from each disconnected line end.
(2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Put the air shut-off valve (1) in position so that the studs (4) go through the attachment bracket (8).
(5) Install the nuts (6) and washers (7) on the studs (4).
(6) Install the union nut (3) on the port (2) of the air shut-off valve (1).
(7) Install the union nut (5) on the port (9) of the air shut-off valve (1).

NOTE: The test of the valve is given after the installation of the actuator of the air shut-off valve.

5. Close-up
Subtask 28-28-36-410-051-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the Actuator of the Air Shut-Off Valve (Ref. AMM TASK 28-28-56-400-001).

Subtask 28-28-36-865-052-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	ACT1/REFUEL & SPLY	33QU	L29
121VU	FUEL/HI/LVL/SPLY	1QJ	L25
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

Subtask 28-28-36-860-052-A ** ON A/C NOT FOR ALL

C. 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) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(4) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.02 06:17:56 UTC