Removal of the Engine 1 Pump Suction Quick-Disconnect Half-Coupling

TASK 29-11-39-000-040-A
Removal of the Engine 1 Pump Suction Quick-Disconnect Half-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: 1038GM ** 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 1M (3 FT)-ADJUSTABLE
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
195BB, 197CB, 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 Quick-Disconnect Half-Coupling

3. Job Set-up
Subtask 29-11-39-860-053-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration (Ref. AMM TASK 29-10-00-864-001).
(2) Depressurize the related hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).

Subtask 29-11-39-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the engine.
(2) Open the left fan-cowl door 437AL (Ref. AMM TASK 71-13-00-010-040).

Subtask 29-11-39-941-050-A ** ON A/C NOT FOR ALL

C. Safety Precautions
(1) Put WARNING NOTICE(S) in position to tell persons not to pressurize the hydraulic system:

In the cockpit, on the HYD section of panel 40VU
On the ground service panel of the Green hydraulic system, access door 197CB
On access door 195BB of the Green hydraulic reservoir.

(2) On the center pedestal, on ENG panel 115VU:

Put a WARNING NOTICE(S) in position to tell persons not to start the engine 1(2).

(3) Make sure that the related engine 1(2) is stopped for at least 5 minutes.
(4) On maintenance panel 50VU:

Make sure that the ON legend of the related ENG FADEC GND PWR pushbutton switch is off.
Put a WARNING NOTICE(S) in position to tell persons not to supply power to the FADEC system.

(5) On the center pedestal, on ENG panel 115VU:

Make sure that the related ENG MASTER 1(2) switch is in the OFF position.

(6) Put a CONTAINER 5 L (1.32 USGAL) below the suction-hose coupling to the hydraulic pump.

4. Procedure
Subtask 29-11-39-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Engine 1 Pump Suction Quick-Disconnect Half Coupling
(1) Disconnect the hose coupling half (5) from the panel.
(2) Hold the suction hose up and remove the coupling half (5). This prevents a flow of hydraulic fluid.
(3) Put COVER - BLANKING on the fluid disconnect panel and on the suction hose.

[Rev.10 from 2021] 2026.04.01 00:15:26 UTC