Installation of the Green Engine 1 Pump Case Drain Check Valve

TASK 29-11-37-400-001-A
Installation of the Green Engine 1 Pump Case Drain Check Valve

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.

ZONE: 410
FIN: 1041GM ** 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	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 27.7 and 24.3 m.N (20.43 and 17.92 lbf.ft )
No specific	Torque wrench: range to between 4.5 and 4.0 m.daN (33.19 and 29.50 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
410	ENG 1 PYLON BOX AND FORWARD FAIRING
437AL

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	PACKING	AIPC 29-11-06-01-080

E. 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 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
Green Engine 1 Pump Case Drain Check Valve

3. Job Set-up
Subtask 29-11-37-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(2) Make sure that the Green hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Green hydraulic system:

on the ground service panel 197CB.

(4) Make sure that the WARNING NOTICE(S) is (are) in position on the access door 195BB to tell persons not to pressurize the Green hydraulic reservoir.
(5) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the engine 1(2).
(6) Make sure that the fan-cowl door is open.

Subtask 29-11-37-941-051-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:

make sure that the WARNING NOTICE(S) is (are) in position 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) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Green hydraulic system:

in the cockpit, on the HYD 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) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to energize the FADEC 1(2).
(6) Make sure that a CONTAINER 5 L (1.32 USGAL) is below the hydraulic tube connection to the switch (25) to collect the remaining fluid.

4. Procedure
Subtask 29-11-37-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Green Engine 1 Pump Case Drain Check valve (1041GM)
(1) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packing (3).
(2) Install the AIPC 29-11-06-01-080 PACKING (3) on the check valve (1).
(3) Remove the blanking plug from the panel (4).
(4) Install the check valve (1) on the panel (4).
(5) TORQUE the check valve (1) to between 4.5 and 4.0 m.daN (33.19 and 29.50 lbf.ft )

.
(6) Remove the blanking plug from the disconnected hose (2).
(7) Connect the hose (2) to the check valve (1).
(8) TORQUE the coupling nut to between 27.7 and 24.3 m.N (20.43 and 17.92 lbf.ft )

Subtask 29-11-37-710-050-A ** ON A/C NOT FOR ALL

B. 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 check valve.
(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 29-11-37-942-050-A ** ON A/C NOT FOR ALL

A. Remove the Safety Precautions
(1) Remove the WARNING NOTICE(S).
(2) Remove the container.
(3) Make sure that the work area is clean and clear of tools and other items.

Subtask 29-11-37-410-050-A ** ON A/C NOT FOR ALL

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

Subtask 29-11-37-410-050-B ** ON A/C NOT FOR ALL

B. Close access
(1) Remove the access platform(s).
(2) Close the left fan-cowl door 437AL (Ref. AMM TASK 71-13-00-410-010).

[Rev.10 from 2021] 2026.04.01 00:15:13 UTC