Removal of the Outlet Non-Return Valve of the Reservoir Pressurization Unit

TASK 29-14-41-000-003-A
Removal of the Outlet Non-Return Valve of the Reservoir Pressurization Unit

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.

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	CONTAINER 3 L(3/4 USGAL)
No specific	2	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
Outlet Non-Return Valve of the Reservoir Pressurization Unit

3. Job Set-up
Subtask 29-14-41-865-059-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33
** ON A/C ALL
123VU	B HYD/ELEC PUMP	2701GJ	AB09
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 29-14-41-860-060-A

B. Aircraft Maintenance Configuration
(1) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green, Blue and Yellow hydraulic systems:

in the cockpit on the hydraulic section 40VU of the overhead panel,
on the ground service panel of the Green, Blue and Yellow hydraulic systems.

(2) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001).
(3) Depressurize the reservoirs of the Green, Blue and Yellow hydraulic systems (Ref. AMM TASK 29-14-00-614-001).
(4) Open the access panel 195BB.
(5) Put a CONTAINER 3 L(3/4 USGAL) below the reservoir pressurization unit.

4. Procedure
Subtask 29-14-41-020-054-A

A. Removal of the Outlet Non-Return Valve of the Reservoir Pressurization Unit (1360GM)

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.

(1) Disconnect the line (1) from the outlet non-return valve (2).
(2) Remove the outlet non-return (2) valve from the reservoir pressurization unit (3).
(3) Put a PLUG - BLANKING in the disconnected line end (1) and in the open port of the reservoir pressurization unit (3).

[Rev.10 from 2021] 2026.04.01 00:24:51 UTC