Removal of the Engine 1 Pump Suction Self-Sealing Coupling

TASK 29-11-38-000-041-A
Removal of the Engine 1 Pump Suction Self-Sealing Coupling

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

WARNING: DO NOT TOUCH THE HYDRAULIC SYSTEM COMPONENTS FOR A SHORT TIME AFTER THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS STAY HOT FOR SOME TIME AND CAN CAUSE INJURY.

CAUTION: DO NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

FIN: 1672GM ** 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) - ADJUSTABLE
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - PROTECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

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
Engine 1 Pump Suction Self-Sealing Coupling
FOR [1000EM1] (ENGINE-1)
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors

3. Job Set-up
Subtask 29-11-38-860-050-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).
(2) Depressurize the Green hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system:

on the ground service panel 197CB.

(4) Put WARNING NOTICE(S) on the access door 195BB to tell persons not to pressurize the Green hydraulic reservoir.

Subtask 29-11-38-941-051-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal on the ENG panel 115VU:

put WARNING NOTICE(S) to tell persons not to start the engine.

(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system:

in the cockpit, on the HYD section of the overhead panel 40VU,

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

Subtask 29-11-38-865-050-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 29-11-38-010-051-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the left fan cowl door :
(a) FOR [1000EM1] (ENGINE-1)
open the door 437AL (Ref. AMM TASK 71-13-00-010-040)
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the door 437AL.

4. Procedure
Subtask 29-11-38-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Engine 1 Pump Suction Self-Sealing Coupling (1672GK)
(1) Disconnect the suction hose (5) from the self-sealing coupling (15). Drain the hydraulic fluid directly into the container.

NOTE: Use a second wrench to hold the self-sealing coupling (15) when you loosen the coupling nut on the suction hose.

(2) Disconnect the self-sealing coupling (15) from the union on the hydraulic pump (10).

NOTE: Use a second wench to hold the self-sealing coupling (15) when you loosen it.

(3) Install COVER - PROTECTION on the self-sealing coupling (15), the suction hose (5) and the union on the hydraulic pump (10).

[Rev.10 from 2021] 2026.04.01 00:15:21 UTC