Installation of the Engine 2 Thrust-Reverser Hydraulic Supply Hoses

TASK 29-13-49-400-045-A
Installation of the Engine 2 Thrust-Reverser Hydraulic Supply Hoses

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.

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 1.41 and 1.27 m.daN (124.78 and 112.39 lbf.in )
No specific	Torque wrench: range to between 3.39 and 3.05 m.daN (25.00 and 22.49 lbf.ft )
No specific	Torque wrench: range to between 6.78 and 6.10 m.daN (50.00 and 44.99 lbf.ft )
No specific	Torque wrench: range to between 7.91 and 7.11 m.daN (58.33 and 52.43 lbf.ft )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB, 447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 29-10-00-864-002-A	Depressurize the Yellow 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 71-13-00-410-040-A	Closing of the Fan Cowl Doors
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
Engine 2 Hydraulic Tubes

3. Job Set-up
Subtask 29-13-49-860-062-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-10-00-864-002).
(2) Make sure that the Yellow 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 Yellow hydraulic system:

on the ground service panel 198CB.

(4) Make sure that the WARNING NOTICE(S) is (are) in position on the access door 195BB to tell persons not to pressurize the Yellow 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 doors 447AL, 448AR are open.

Subtask 29-13-49-941-076-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 Yellow 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 collect the remaining fluid.

4. Procedure
Subtask 29-13-49-420-060-A ** ON A/C NOT FOR ALL

A. Installation of the Hydraulic Supply Hoses
(1) Remove the blanking covers from the hoses (50), (55) and the related interface bracket ports.
(2) Connect the hoses (50) and (55) to the interface bracket (left and right side).
(3) TORQUE the couplings of the hose (50) to between 6.78 and 6.10 m.daN (50.00 and 44.99 lbf.ft )

.
(4) TORQUE the couplings of the hose (55) to between 3.39 and 3.05 m.daN (25.00 and 22.49 lbf.ft )

.
(5) Install the hoses (50) and (55) on the brackets:

use the clamps (40) and (45), the screws (20) and the washers (25).

(6) Remove the blanking covers from the hoses (30), (35), the related hydraulic control unit port and the related interface bracket ports.
(7) Connect the hose (30) to the hydraulic control unit and the interface bracket (left side).
(8) Connect the hose (35) to the interface bracket (left and right side).
(9) TORQUE the couplings of the hoses (30) and (35) to between 1.41 and 1.27 m.daN (124.78 and 112.39 lbf.in )

.
(10) Install the hoses (30) and (35) on the brackets:

use the clamps (15), the screws (20) and the washers (25).

(11) Remove the blanking covers from the hoses (5), (10), the pylon tube ports and the hydraulic control unit ports.
(12) Connect the hoses (5) and (10) to the hydraulic control unit and the pylon tube.
(13) TORQUE the couplings of the hose (5) to between 6.78 and 6.10 m.daN (50.00 and 44.99 lbf.ft )

.
(14) TORQUE the couplings of the hose (10) to between 7.91 and 7.11 m.daN (58.33 and 52.43 lbf.ft )

.
(15) Install the hoses (5) and (10) to the bracket:

use the clamps (3) and (4), the screw (20), the washer (25) and the nut (60).

(16) Remove the container.

Subtask 29-13-49-710-059-A ** ON A/C NOT FOR ALL

B. Operational test
(1) Pressurize the Yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(2) Do the operational test of the thrust reverser (Ref. AMM TASK 78-31-00-710-040).
(3) Make sure that there are no leaks from the connections.
(4) Make sure that the level of the hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).

5. Close-up
Subtask 29-13-49-410-061-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close the left fan-cowl doors 447AL 448AR (Ref. AMM TASK 71-13-00-410-040).
(5) Close the access door 195BB.

[Rev.10 from 2021] 2026.04.01 00:22:15 UTC