Removal of the Engine 1 Pump Suction Self-Sealing Coupling

TASK 29-11-38-000-040-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.

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

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	1	CONTAINER 10 L(2 1/2 USGAL)
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
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 71-13-00-010-040-A	Opening of the Fan Cowl Doors
Engine 1 Pump-Suction Self-Sealing Coupling

3. Job Set-up
Subtask 29-11-38-860-053-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 29-11-38-941-050-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 29-11-38-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the left fan-cowl door 437AL (Ref. AMM TASK 71-13-00-010-040).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

4. Procedure
Subtask 29-11-38-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Engine 1 Pump Suction Self-Sealing Coupling
(1) Disconnect the hose coupling half from the fluid disconnect panel.
(2) Put a CONTAINER 10 L(2 1/2 USGAL) below the suction hose adapter assembly (10) connection to the hydraulic pump to collect the remaining fluid.
(3) Disconnect the lower end of the suction hose from the adapter assembly (10).
(4) Remove the adapter assembly (10) from the hydraulic pump union.
(5) Put COVER - BLANKING on the adapter assembly (10) and the hydraulic pump union.

[Rev.10 from 2021] 2026.04.01 00:15:19 UTC