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

TASK 29-11-39-400-811-A
Installation 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
To perform the Operational test of the Green Hydraulic System, we need 2 persons:

One in the cockpit
One outdoor for the security.

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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 25.76 and 21.47 m.daN (189.97 and 158.33 lbf.ft )

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 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
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 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the 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 29-11-00-710-001-A	Operational Test of 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
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
Engine 1 Pump Suction Quick-Disconnect Half-Coupling

3. Job Set-up
Subtask 29-11-39-860-068-A

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized
(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 Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(4) Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).

Subtask 29-11-39-941-065-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) Make sure that the WARNING NOTICE(S) is 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) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the Green hydraulic system.
(3) On access door 195BB:
(a) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the reservoir of the Green hydraulic system.
(4) On access door 197CB:
(a) On the ground service panel, make sure that the WARNING NOTICE(S) is 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) Make sure that the WARNING NOTICE(S) are in position to tell person s 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) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize the FADEC GND PWR/1(2).

Subtask 29-11-39-010-066-A

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

4. Procedure
Subtask 29-11-39-420-058-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. Installation of the Engine 1 Pump Suction Quick-Disconnect Half-Coupling

Engine 1 Pump Suction Quick-Disconnect Half-Coupling

(1) Make sure that the CONTAINER 20L (5 USGAL) is in position below the hydraulic connections.
(2) Clean the component interfaces and the adjacent area.
(3) Do a visual inspection of the component interfaces and the adjacent area.
(4) Make sure that the hydraulic line end-fittings are serviceable.
(5) Remove the COVER - BLANKING from the fluid disconnect panel (2) and the suction hose (3). Hold the suction hose (3) in position.

NOTE: This prevents a flow of hydraulic fluid

(6) Install the half coupling (1) on the section hose (3).
(7) TORQUE the half coupling nut to between 25.76 and 21.47 m.daN (189.97 and 158.33 lbf.ft )

.
(8) Connect the half coupling (1) to the fluid disconnect panel (2).
(9) Tighten the half coupling (1).

Subtask 29-11-39-710-058-A

B. Operational Test
(1) Do the operational test of the Green hydraulic system (Ref. AMM TASK 29-11-00-710-001).
(2) After the dry-motoring, make sure that there are no leaks from the hydraulic connections.
(3) Make sure that the level of the hydraulic fluid in the Green reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).

5. Close-up
Subtask 29-11-39-410-060-A

A. Close Access
(1) Remove the container.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close left fan-cowl doors 437AL (Ref. AMM TASK 71-13-00-410-803).
(4) Close access doors 197CB and 195BB.
(5) Remove the access platform(s).
(6) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 29-11-39-942-055-A

B. Safety Precautions
(1) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 00:15:42 UTC