Hydraulic Maintenance Procedure after an Engine Installation (with Engine Pump Installed) or after an Engine Pump Installation

TASK 29-13-51-860-001-A
Hydraulic Maintenance Procedure after an Engine Installation (with Engine Pump Installed) or after an Engine Pump Installation

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: 445

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 10 L(2 1/2 USGAL)
No specific	Torque wrench: range to between 20.35 and 17.84 lbf.ft (2.76 and 2.42 m.daN )
No specific	Torque wrench: range to between 280 and 215 lbf.in (3.16 and 2.43 m.daN )
No specific	Torque wrench: range to between 0.39 and 0.34 m.daN (34.51 and 30.09 lbf.in )
No specific	Torque wrench: range to between 1.86 and 1.75 m.daN (13.72 and 12.91 lbf.ft )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
445	FAN AND ACCESSORY GEARBOX

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 29-00-00-210-001-A	Check for Air in the Green/Blue/Yellow Hydraulic System
TASK 29-13-00-710-002-A	Operational Test of the Yellow Hydraulic System
TASK 29-13-43-200-802-A	Visual Check of the Engine-Pump Case-Drain Filter Contamination (Pop-Out) Indicator
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 29-30-00-200-002-A	Check of the Reservoir Quantity Indication on the ECAM Display Unit
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
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 78-31-00-710-041-A	Operational Test of the Thrust Reverser System with the CFDS
TASK 78-31-00-710-041-A-02	Operational test of the Thrust Reverser without the CFDS and Engine Running
TASK 78-31-00-710-042-A	Operational Test of the Thrust Reverser System
TASK 78-31-00-710-805-A	Operational Test of Thrust Reverser with MCDU
TASK 78-31-00-710-805-A-01	Thrust Reverser Cycling Test (Engine Running)
Case-Drain Filter of Engine Pump ** ON A/C NOT FOR ALL
Case-Drain Filter of Engine Pump ** ON A/C NOT FOR ALL
Case-Drain Filter of Engine Pump ** ON A/C NOT FOR ALL
Case-Drain Filter of Engine Pump ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 29-13-51-869-053-A

A. You must do this procedure:

To bleed the hydraulic system and to make sure that it operates correctly after an engine installation (engine pump installed).
To bleed the hydraulic system and to make sure that it operates correctly after an engine pump installation.

4. Procedure
Subtask 29-13-51-870-054-A ** ON A/C NOT FOR ALL

A. Bleeding
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(2) On the ECAM control panel, push the HYD key:

On the SD, the HYD page comes into view.

(3) On overhead panel 20VU:

Lift the guard and release the ENG1/FIRE and ENG2/FIRE pushbutton switches.

(4) On the SD:

Make sure that the fire shut-off valves are closed.

(5) Disconnect the hose of the Yellow engine-pump case-drain filter (3084GM) and put the open end in a clean CONTAINER 10 L(2 1/2 USGAL).
(6) Pressurize the related hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(7) Lift the guard and push the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves open).
(8) Let the hydraulic fluid flow out from the hose into the CONTAINER 10 L(2 1/2 USGAL) until there is no air in it.
(9) When the bleeding is completed, push and release the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves close).
(10) If necessary, do steps 4.A.(3), 4.A.(4) and 4.A.(6) again or continuously pressurize the related reservoir.
(11) Connect the hose to the filter and tighten it.
(12) TORQUE the hose of the filter to between 280 and 215 lbf.in (3.16 and 2.43 m.daN )

.
(13) Push the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves open).

Subtask 29-13-51-870-054-C ** ON A/C NOT FOR ALL

A. Bleeding
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(2) On the ECAM control panel, push the HYD key:

On the SD, the HYD page comes into view.

(3) On overhead panel 20VU:

Lift the guard and release the ENG1/FIRE and ENG2/FIRE pushbutton switches.

(4) On the SD:

Make sure that the fire shut-off valves are closed.

(5) Disconnect the hose of the Yellow engine-pump case-drain filter (3084GM) and put the open end in a clean CONTAINER 10 L(2 1/2 USGAL).
(6) Pressurize the related hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(7) Lift the guard and push the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves open).
(8) Let the hydraulic fluid flow out from the hose into the CONTAINER 10 L(2 1/2 USGAL) until there is no air in it.
(9) When the bleeding is completed, push and release the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves close) .
(10) If necessary, do steps 4.A.(3), 4.A.(4) and 4.A.(6) again or continuously pressurize the related reservoir.
(11) Connect the hose to the filter and tighten it.
(12) TORQUE the hose of the filter to between 20.35 and 17.84 lbf.ft (2.76 and 2.42 m.daN )

.
(13) Push the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves open).

Subtask 29-13-51-870-054-D ** ON A/C NOT FOR ALL

A. Bleeding
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(2) On the ECAM control panel, push the HYD key:

On the lower ECAM DU, the HYD page comes into view.

(3) On overhead panel 20VU:

Lift the guard and release the ENG1/FIRE and ENG2/FIRE pushbutton switches.

(4) On the lower ECAM DU:

Make sure that the fire shut-off valves are closed.

(5) On the fan case, remove the screw (3) and the clamp (2) that attach the case drain tube (4).
(6) Disconnect the tube (4) from the case drain filter (1) and put the open end in a clean CONTAINER 10 L(2 1/2 USGAL).
(7) Pressurize the related hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(8) Lift the guard and push the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves open).
(9) Let the hydraulic fluid flow out from the tube (4) into the CONTAINER 10 L(2 1/2 USGAL) until there is no air in it.
(10) When the bleeding is completed, push and release the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves close).
(11) If necessary, do steps 4.A.(3), 4.A.(4) and 4.A.(7) again or continuously pressurize the related reservoir.
(12) Install the clamp (2) and the screw (3).
(13) TORQUE the screw (3) to between 0.39 and 0.34 m.daN (34.51 and 30.09 lbf.in )

.
(14) Connect the tube (4) to the case drain filter (1).
(15) While you hold the adapter with a wrench, TORQUE the coupling nut of the tube (4) to between 1.86 and 1.75 m.daN (13.72 and 12.91 lbf.ft )

.
(16) Push the ENG1/FIRE and ENG2/FIRE pushbutton switches (the fire shut-off valves open).

Subtask 29-13-51-710-060-A ** ON A/C NOT FOR ALL

B. Tests
(1) Examine the hydraulic connections of the fire shut-off valve for leaks.

NOTE: Leaks are not permitted.

(2) Operational Test of the Thrust Reverser
(a) Do an operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-040).
(3) Operational Test
(a) Do an operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).

NOTE: Only make sure that the Yellow hydraulic pressure increases. It is not necessary to monitor the alarm thresholds of the low pressure switch of the Yellow engine pump.

(b) During the dry motoring, make sure that there are no leaks from:

The hydraulic connections of the pump
The Yellow engine-pump case-drain filter
The interface between the pump and the accessory gearbox.

(c) Make sure that the clogging indicator of the Yellow engine pump case drain filter is not extended.
(d) Make sure that the clogging indicator of the Yellow HP filter is not extended.
(e) Make sure that the level of hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).
(f) Do a check of the quantity of air in the Yellow hydraulic system (Ref. AMM TASK 29-00-00-210-001).

Subtask 29-13-51-710-060-B ** ON A/C NOT FOR ALL

B. Tests
(1) Examine the hydraulic connections of the fire shut-off valve for leaks.

NOTE: Leaks are not permitted.

(2) Do an operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-042).
(3) Operational Test
(a) Do an operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).

NOTE: Only make sure that the Yellow hydraulic pressure increases. It is not necessary to monitor the alarm thresholds of the low pressure switch of the Yellow engine pump.

(b) During the dry motoring, make sure that there are no leaks from:

The hydraulic connection of the pump
The Yellow engine pump case drain filter
The interface between the pump and the accessory gearbox.

(c) Make sure that the clogging indicator of the Yellow engine-pump case-drain filter is not extended.
(d) Make sure that the clogging indicator of the Yellow HP filter is not extended.
(e) Make sure that the level of hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).
(f) Do a check of the quantity of the air in the Yellow hydraulic system (Ref. AMM TASK 29-00-00-210-001).

Subtask 29-13-51-710-060-E ** ON A/C NOT FOR ALL

B. Tests
(1) Examine the hydraulic connections of the fire shut-off valve for leaks.

NOTE: Leaks are not permitted.

(2) Operational Test of the Trust Reverser
(a) Do an operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-041).
(3) Operational Test
(a) Do a check of the hydraulic fluid level in the reservoir (Ref. AMM TASK 29-30-00-200-002).
(b) Do an operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).

NOTE: Only make sure that the Yellow hydraulic pressure increases. It is not necessary to monitor the alarm thresholds of the low pressure switch of the Yellow engine pump.

The hydraulic connection of the pump
The Yellow engine pump case drain filter
The interface between the pump and the accessory gearbox.

(d) Make sure that the clogging indicator of the Yellow engine-pump case-drain filter is not extended.
(e) Make sure that the clogging indicator of the Yellow HP filter is not extended.
(f) Make sure that the level of hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).
(g) Do a check of the quantity of air in the Yellow hydraulic system (Ref. AMM TASK 29-00-00-210-001).

Subtask 29-13-51-710-060-F ** ON A/C NOT FOR ALL

B. Test
(1) Examine the hydraulic connections of the fire shut-off valve for leaks.
(a) If there are leaks, repair as applicable.
(2) Do an operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-805).
(3) Operational test
(a) Do an operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).

NOTE: Only make sure that the Yellow hydraulic pressure increases. It is not necessary to monitor the alarm thresholds of the low pressure switch of the Yellow engine pump.

(b) After the dry-motoring, make sure that there were no leaks from:

The hydraulic connection of the pump
The Yellow engine-pump case-drain-filter (3084GM)
The interface between the pump and the accessory gearbox.

(c) Make sure that the clogging indicator of the Yellow engine-pump case-drain-filter (3084GM) is not extended (Ref. AMM TASK 29-13-43-200-802).
(d) Make sure that the clogging indicator of the Yellow HP filter is not extended.
(e) 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).
(f) Do a check of the quantity of air in the Yellow hydraulic system (Ref. AMM TASK 29-00-00-210-001).

5. Close-up
Subtask 29-13-51-860-060-A

A. Close Access
(1) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).

[Rev.10 from 2021] 2026.04.01 04:45:14 UTC