Installation of the Reservoir Pressurization Hose

TASK 29-14-49-400-001-A
Installation of the Reservoir Pressurization Hose

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.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

WARNING: YOU MUST NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. THE HYDRAULIC FLUID IS POISONOUS AND CAN BE ABSORBED INTO YOUR BODY. IF YOU ACCIDENTALLY GET HYDRAULIC FLUID IN YOUR EYES, MOUTH OR ON YOUR SKIN, FLUSH WITH WATER AND GET MEDICAL AID.

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 470
FIN: 1674GM ** 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 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 1.70 and 1.50 m.daN (12.54 and 11.06 lbf.ft )
No specific	Torque wrench: range to between 3.20 and 2.90 m.daN (23.60 and 21.39 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03LBB1)	Grease-Thread Anti-seize Graphited and Petrolatum -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
470	ENGINE 1 AFT PYLON
195BB
FOR [1000EM1] (ENGINE-1)
437AL, 451AL

D. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-720-002-A	Functional Test of the Hydraulic Reservoir Pressurization System with the Left Engine
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
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
TASK 78-30-00-040-013-A	Deactivation of the Thrust Reverser System for Flight
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 78-30-00-440-013-A	Activation of the Thrust Reverser System for Flight
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
Reservoir Pressurization Hose
Reservoir Pressurization Hose ** ON A/C NOT FOR ALL
Reservoir Pressurization Hose ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 29-14-49-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the hydraulic systems are depressurized (Ref. AMM TASK 29-23-00-864-001), (Ref. AMM TASK 29-24-00-864-001) and (Ref. AMM TASK 29-10-00-864-003).
(2) Make sure that the hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the hydraulic system:

on the ground service panel 198CB.

(4) Make sure that WARNING NOTICE(S) is (are) in position on the access door 195BB to tell persons not to pressurize the hydraulic reservoir.

Subtask 29-14-49-010-051-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the left fan cowl door is open (Ref. AMM TASK 71-13-00-010-040).
(a) FOR [1000EM1] (ENGINE-1)
437AL
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the engine 1.
(3) Deactivation of the Thrust Reverser.

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(a) Make sure that the thrust reverser is unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).
(4) Make sure that the thrust reverser door is open (Ref. AMM TASK 78-36-00-010-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL

Subtask 29-14-49-010-051-B ** ON A/C NOT FOR ALL

(a) Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).
(4) Make sure that the thrust reverser door is open (Ref. AMM TASK 78-36-00-010-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL

Subtask 29-14-49-010-051-C ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the left fan cowl door is open (Ref. AMM TASK 71-13-00-010-010).
(a) FOR [1000EM1] (ENGINE-1)
437AL
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the engine 1.
(3) Deactivation of the thrust reverser.

(a) Do the deactivation of the thrust reverser (Ref. AMM TASK 78-30-00-040-013).
(4) Make sure that the thrust reverser door halve is open (Ref. AMM TASK 78-32-00-010-010).
(a) FOR [1000EM1] (ENGINE-1)
451AL

Subtask 29-14-49-941-051-A ** ON A/C NOT FOR ALL

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

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

(2) Make sure that the engine 1 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 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).

4. Procedure
Subtask 29-14-49-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Reservoir Pressurization Hose

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.

to the bleed pipe (3), turn the elbow so that you get an angle of 5 to 10 degrees (approx.) between the elbow axis and the longitudinal axis of the bleed pipe,
to the junction plate (1).

(6) TORQUE the nuts (2) of the reservoir pressurization hose (4) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )

.
(7) Manually move the hose and make sure that there is a minimum clearance of approximately 25.4 mm (1.0000 in.) between the hose and the adjacent pipes. If the clearance is not correct, do the adjustment again.

Subtask 29-14-49-420-050-C ** ON A/C NOT FOR ALL

A. Installation of the Reservoir Pressurization Hose

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply Grease-Thread Anti-seize Graphited and Petrolatum - (Material No.03LBB1) to all the hydraulic unions.
(5) Connect the reservoir pressurization hose (4) to the junction plates (1) and (3).
(6) TORQUE the nuts (2) of the reservoir pressurization hose (4) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )

.
(7) Manually move the hose and make sure that there is a minimum clearance of approximately 25.4 mm (1.0000 in.) between the hose and the adjacent pipes.
If the clearance is not correct, do the adjustment again.

Subtask 29-14-49-420-050-D

A. Installation of the Reservoir Pressurization Hose

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply Grease-Thread Anti-seize Graphited and Petrolatum - (Material No.03LBB1) to all the hydraulic unions.
(5) Connect the reservoir pressurization hose (3) to the restrictor elbow (5).
(6) TORQUE the nut (4) of the reservoir pressurization hose (3) to between 3.20 and 2.90 m.daN (23.60 and 21.39 lbf.ft )

.
(7) Put the reservoir pressurization hose (3) and the restrictor elbow (5) in position on the junction plate (1).
(8) Connect the reservoir pressurization hose (3) to the junction plate (1).
(9) TORQUE the nut (2) of the reservoir pressurization hose (3) to between 1.70 and 1.50 m.daN (12.54 and 11.06 lbf.ft )

.
(10) Connect the restrictor elbow (5) to the junction plate (6).
(11) TORQUE the nut of the restrictor elbow (5) to between 1.70 and 1.50 m.daN (12.54 and 11.06 lbf.ft )

.
(12) Move the reservoir pressurization hose (3) with your hand. Make sure that there is a minimum clearance of approximately 25.4 mm (1.0000 in.) between the reservoir pressurization hose (3) and the adjacent pipes.
(a) If the clearance is not correct, manually adjust the reservoir pressurization hose (3) again.

Subtask 29-14-49-410-053-A ** ON A/C NOT FOR ALL

B. Closing of the Thrust Reverser Doors
(1) Close the thrust reverser door (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL
(2) Make sure that the work area is clean and clear of tool(s) and other items.

Subtask 29-14-49-440-051-A ** ON A/C NOT FOR ALL

C. Activation of the Thrust Reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-081-041).

Subtask 29-14-49-410-053-B ** ON A/C NOT FOR ALL

D. Closing of the Thrust Reverser
(1) Close the thrust reverser halve (Ref. AMM TASK 78-32-00-410-010).
(a) FOR [1000EM1] (ENGINE-1)
451AL
(2) Make sure that the work area is clean and clear of tool(s) and other items.

Subtask 29-14-49-440-051-B ** ON A/C NOT FOR ALL

E. Activation of the Thrust Reverser
(1) Do the activation of the thrust reverser system (Ref. AMM TASK 78-30-00-440-013).

Subtask 29-14-49-410-053-C ** ON A/C NOT FOR ALL

F. Closing of the Thrust Reverser
(1) Close the thrust reverser door (Ref. AMM TASK 78-36-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
451AL
(2) Make sure that the work area is clean and clear of tool(s) and other items.

Subtask 29-14-49-440-051-C ** ON A/C NOT FOR ALL

G. Activation of the Thrust Reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-081-041).

Subtask 29-14-49-720-050-A ** ON A/C NOT FOR ALL

H. Test of the Reservoir Pressurization Hose
(1) Do the functional test of the hydraulic reservoir pressurization system with the left engine (Ref. AMM TASK 29-14-00-720-002).
(2) Make sure that there are no leaks at the reservoir pressurization hose.

5. Close-up
Subtask 29-14-49-410-050-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(3) Close the left fan cowl door (Ref. AMM TASK 71-13-00-410-040).
(a) FOR [1000EM1] (ENGINE-1)
437AL
(4) Close the access door 195BB.

Subtask 29-14-49-410-050-B ** ON A/C NOT FOR ALL

Subtask 29-14-49-410-050-C ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(3) Close the left fan cowl door (Ref. AMM TASK 71-13-00-410-010).
(a) FOR [1000EM1] (ENGINE-1)
437AL
(4) Close the access door 195BB.

[Rev.10 from 2021] 2026.04.01 12:56:07 UTC