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

TASK 29-11-39-000-810-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.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

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.

ZONE: 430

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 3M (10 FT)- ADJUSTABLE
No specific	1	CONTAINER 20L (5 USGAL)
No specific	AR	COVER - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
430	ENG 1 AIR INTAKE, FAN AND ACCESS GEARBOX
195BB, 197CB, 437AL

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
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 71-13-00-010-803-A	Opening of the Fan Cowl Doors
Engine 1 Pump Suction Quick-Disconnect Half-Coupling

3. Job Set-up
Subtask 29-11-39-860-067-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the slats are in the fully retracted position (Ref. AMM TASK 27-80-00-866-005).
(3) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration (Ref. AMM TASK 29-10-00-864-001).
(4) Depressurize the related hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).

Subtask 29-11-39-941-064-A

B. Safety Precautions
(1) On AIR COND panel 30VU:
(a) Make sure that the APU BLEED pushbutton switch is released (ON legend is off).
(b) Put the WARNING NOTICE(S) in position to tell persons not to operate the APU BLEED pushbutton switch.
(2) In the cockpit, on the HYD section of panel 40VU:
(a) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system.
(3) Open access door 195BB.
(a) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the reservoir of the Green hydraulic system.
(4) Open access door 197CB.
(a) On the ground service panel, put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system.
(5) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put the WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
(6) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to energize the FADEC GND PWR/1(2).

Subtask 29-11-39-010-065-A

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the engine.
(2) Open left fan-cowl door 437AL (Ref. AMM TASK 71-13-00-010-803).

4. Procedure
Subtask 29-11-39-020-058-A

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

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

Engine 1 Pump Suction Quick-Disconnect Half-Coupling

(1) Put the CONTAINER 20L (5 USGAL) below the suction-hose coupling to the hydraulic pump.
(2) Disconnect the half coupling (1) from the fluid disconnect panel (2).
(3) Hold the suction hose (3) in position and remove the half coupling (1).

NOTE: This prevents a flow of hydraulic fluid.

(4) Put the COVER - BLANKING on the fluid disconnect panel (2) and on the suction hose (3).

[Rev.10 from 2021] 2026.04.01 00:15:41 UTC