Removal of the Engine-1 Pump-Suction Self-Sealing-Coupling

TASK 29-11-38-000-802-A
Removal of the Engine-1 Pump-Suction Self-Sealing-Coupling

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) - ADJUSTABLE
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - PROTECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	1	WRENCH - STANDARD

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
437AL
FOR [1000EM1] (ENGINE-1)
437AL

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
Engine-1 Pump-Suction Self-Sealing-Coupling

3. Job Set-up
Subtask 29-11-38-860-054-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(2) Depressurize the Green hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(3) Put a WARNING NOTICE(S) in position on the ground service panel 197CB to tell persons not to pressurize the Green hydraulic system.
(4) Put a WARNING NOTICE(S) in position on access door 195BB to tell persons not to pressurize the Green hydraulic reservoir.

Subtask 29-11-38-941-054-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal on ENG panel 115VU, put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1 shutdown occurred not less than five minutes before you do this procedure.
(3) In the cockpit, on the HYD section of the HYD/FUEL panel 40VU:

Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system.

(4) On the overhead maintenance panel 50VU:

Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

(5) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
(6) Put a CONTAINER 5 L (1.32 USGAL) in position below the connection between the pressure hose (2) and the fluid disconnect panel to collect the hydraulic fluid.

Subtask 29-11-38-865-053-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	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34

Subtask 29-11-38-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the left fan cowl door (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)

437AL

(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at door 437AL.

4. Procedure
Subtask 29-11-38-020-052-A ** ON A/C NOT FOR ALL

A. Removal of the Engine-1 Pump-Suction Self-Sealing-Coupling (1672GK)

CAUTION: BE CAREFUL WHEN YOU DISCONNECT THE SUCTION HOSE AS THE HYDRAULIC FLUID WILL FLOW OUT.

(1) Disconnect the hose coupling half from the fluid disconnect panel.
(2) Disconnect the suction hose (5) from the self-sealing coupling (15). Drain the hydraulic fluid directly into the container.
(a) Use a second WRENCH - STANDARD to hold the self-sealing coupling (15) when you loosen the coupling nut on the suction hose (5).
(3) Disconnect the self-sealing coupling (15) from the union on the hydraulic pump (10).
(a) Use a second WRENCH - STANDARD to hold the self-sealing coupling (15) when you loosen it.
(4) Install COVER - PROTECTION on the self-sealing coupling (15), suction hose (5) and union on the hydraulic pump (10).

[Rev.10 from 2021] 2026.04.01 00:15:23 UTC