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

TASK 29-11-39-400-040-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.

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	1	CONTAINER 5 L (1.32 USGAL)
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 10.17 and 9.04 m.daN (75.00 and 66.67 lbf.ft )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
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 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 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
Engine 1 Pump Suction Quick-Disconnect Half-Coupling

3. Job Set-up
Subtask 29-11-39-860-052-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) Make sure that the related hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position.
(4) Make sure that the left fan-cowl door 437AL is open (Ref. AMM TASK 71-13-00-010-040).
(5) Make sure that the WARNING NOTICE(S) is (are) 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.

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

Make sure that WARNING NOTICE(S) is (are) in position to tell persons not to start the engine 1(2).

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

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

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

Make sure that the related ENG MASTER switch is in the OFF position.

(10) Make sure that a CONTAINER 5 L (1.32 USGAL) is below the suction-hose coupling to the hydraulic pump.

4. Procedure
Subtask 29-11-39-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Engine 1 Pump Suction Quick-Disconnect Half Coupling
(1) Remove the blanking covers from the port of the fluid disconnect panel and the upper end of the suction hose. Hold the suction hose up, this prevents a flow of hydraulic fluid.
(2) Install the coupling half (5) on the upper end of the hose.
(3) TORQUE the coupling nut to between 10.17 and 9.04 m.daN (75.00 and 66.67 lbf.ft )

NOTE: Use a second wrench to hold the coupling half (5) when you torque the suction hose coupling nut.

(4) Connect the hose coupling half (5) to the fluid disconnect panel and fully tighten the coupling by hand to the stop.

Subtask 29-11-39-710-050-A ** ON A/C NOT FOR ALL

B. Operational Test
(1) Do an operational test of the Green hydraulic system (Ref. AMM TASK 29-11-00-710-001).
(2) During the dry motoring, make sure that there are no leaks from the coupling half 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 29-11-39-410-050-A ** ON A/C NOT FOR ALL

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 the left fan-cowl door 437AL (Ref. AMM TASK 71-13-00-410-040).
(4) Remove the access platform(s).

Subtask 29-11-39-942-050-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 00:15:28 UTC