Installation of the Engine 1 Thrust Reverser Check Valve

TASK 29-11-35-400-001-A
Installation of the Engine 1 Thrust Reverser 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.

FIN: 3010KM1 ** 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	CONTAINER 5 L (1.32 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 8.3 and 7.5 m.daN (61.21 and 55.31 lbf.ft )
No specific	Torque wrench: range to between 10.7 and 9.7 m.daN (78.91 and 71.53 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
437AL

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	O-RING	AIPC 29-11-06-01-025

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 20-29-00-911-002-A	Removal/Installation of an O-ring (Hydraulic Systems)
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 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
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
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-31-00-710-040-A	Operational Test of the Thrust Reverser System
TASK 78-31-00-710-040-A-01	Operational Test of the Thrust Reverser without CFDS - Engine not Running
TASK 78-31-00-710-040-A-02	Operational Test of the Thrust Reverser without CFDS - Engine Running
TASK 78-31-00-710-042-A	Operational Test of the Thrust Reverser System
Thrust Reverser - Check Valve

3. Job Set-up
Subtask 29-11-35-860-051-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.

Subtask 29-11-35-941-052-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 section of the 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 to catch the remaining fluid.

4. Procedure
Subtask 29-11-35-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Green Engine 1 Thrust Reverser Check Valve
(1) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) on the new AIPC 29-11-06-01-025 O-RING (2).
(2) Install the O-ring (2) on the check valve (3) (Ref. AMM TASK 20-29-00-911-002).
(3) Remove the blanking plug from the panel (1).
(4) Install the check valve (3) on the panel (1).
(5) TORQUE the check valve (3) to between 10.7 and 9.7 m.daN (78.91 and 71.53 lbf.ft )

.
(6) Remove the blanking plug from the pipe (4).
(7) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the hydraulic connector of the pipe (4).
(8) Connect the pipe (4) to the check valve (3).
(9) TORQUE the hydraulic connector of the pipe (4) to between 8.3 and 7.5 m.daN (61.21 and 55.31 lbf.ft )

.
(10) Remove the cloth.

Subtask 29-11-35-863-051-A ** ON A/C NOT FOR ALL

B. Hydraulic Pressurization
(1) Pressurize the Green hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(2) Pressurize the Green hydraulic system
(Ref. AMM TASK 29-23-00-863-001).

Subtask 29-11-35-440-050-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 29-11-35-710-050-A ** ON A/C NOT FOR ALL

D. Test.
(1) Do the operational test of the thrust reversers (Ref. AMM TASK 78-31-00-710-040).
(2) Make sure that there are no leaks from the connections of the check valve (3).
(3) Make sure that the level of hydraulic fluid in the Green reservoir is correct.
If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).

Subtask 29-11-35-710-050-B ** ON A/C NOT FOR ALL

D. Test
(1) Do the operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-042).
(2) Make sure that there are no leaks from the connections of the check valve (3).
(3) Make sure that the level of 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 29-11-35-942-051-A ** ON A/C NOT FOR ALL

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

Subtask 29-11-35-410-050-A ** ON A/C NOT FOR ALL

B. Close the left fan-cowl door 437AL (Ref. AMM TASK 71-13-00-410-040).

[Rev.10 from 2021] 2026.04.01 00:14:57 UTC