Removal of the Engine Pump

TASK 29-13-51-000-010-A
Removal of the Engine Pump

WARNING: BE CAREFUL DURING THE REMOVAL/INSTALLATION OF THE PUMP BECAUSE IT WEIGHS 22 LB (10.2 KG).

WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

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: 440
FIN: 3030GD ** 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 1M (3 FT)-ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	CONTAINER 10 L(2 1/2 USGAL)
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - BLANKING
No specific	AR	COVER - PROTECTION
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
440	ENG 2 AIR INTAKE, FAN AND ACCESS GEARBOX
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-280-005-A	Check of the Green, Yellow or Blue Hydraulic System after Operation in an Overheat Condition
TASK 29-00-00-280-006-A	Check of the Green or Yellow Hydraulic System after Engine Pump Failure or Operation in a Possible Cavitation Condition - with Ground Cart Available
TASK 29-00-00-280-006-A-01	Check of the Green or Yellow Hydraulic System after Engine Pump Failure or Operation in a Possible Cavitation Condition - Ground Cart not Available
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
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)
Abex Hydraulic Pump
Vickers Hydraulic Pump

3. Job Set-up
Subtask 29-13-51-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Do the system check applicable after pump damage (Ref. AMM TASK 29-00-00-280-006), if you remove the pump:

Because of operation without fluid (dry running)
Or because of malfunction if you think that there is a pump internal damage. If there is a pump damage and an overheat condition, do also the system check applicable after overheat condition (Ref. AMM TASK 29-00-00-280-005).

(2) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-864-001).
(3) Depressurize the Yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(4) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:

on the ground service panel 198CB.

(5) Put WARNING NOTICE(S) on the access door 195BB to tell persons not to pressurize the Yellow hydraulic reservoir.
(6) On the ECAM control panel, push the HYD key:

On the SD, the HYD page comes into view.

(7) On the overhead panel 20VU:

Lift the guard and release the ENG2/FIRE pushbutton switch.

(8) On the SD:

Make sure that the fire shut-off valve (3046GD) is closed.

Subtask 29-13-51-941-050-A ** ON A/C NOT FOR ALL

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

put WARNING NOTICE(S) 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) Put WARNING NOTICE(S) 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) Put WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
(6) Put a CONTAINER 5 L (1.32 USGAL) below the hydraulic connections of the engine pump to collect the remaining fluid.

Subtask 29-13-51-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position at the engine.

Subtask 29-13-51-865-050-A ** ON A/C NOT FOR ALL

D. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36

4. Procedure
Subtask 29-13-51-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Engine Pump
(1) Disconnect the electrical connector (5) from the pump (6).

PRE SBN 29-0265
(2) Disconnect the hydraulic hoses.
(a) Put the CONTAINER 10 L(2 1/2 USGAL) below the pump (6).
(b) Disconnect the pressure hose (2), the suction hose (1) and the case drain hose (12) from the pump unions. Collect the hydraulic fluid in the container.

END OF PRE SBN 29-0265

POST SBN 29-0265
(3) Disconnect the hydraulic hoses.
(a) Put the CONTAINER 10 L(2 1/2 USGAL) below the pump (6).
(b) Disconnect the suction hose (1) and the case drain hose (12) from the pump unions.
(c) Disconnect the pressure hose (2) from the dampener (18). Collect the hydraulic fluid in the container.

END OF POST SBN 29-0265
(4) Remove the self-sealing coupling (17).

PRE SBN 29-0265
(5) Remove the unions:
(a) Remove the unions (3), (11) and (14) from the pump (6).
(b) Remove the packings (4), (15) and (16) from the union (3), the packing (13) from the union (14) and the packing (10) from the union (11). Discard the packings.

END OF PRE SBN 29-0265

POST SBN 29-0265
(6) Remove the unions and the dampener:
(a) Remove the unions (11), (14) and the dampener (18) from the pump.
(b) Remove the packing (13) from the union (14) and the packing (10) from the union (11). Discard the packings.
(c) Remove the packings (19), (21) and the retainers (20) from the dampener (18). Discard the packings.

END OF POST SBN 29-0265
(7) Remove the pump (6):
(a) Loosen the nuts (9) and turn the pump to put the nuts in the large holes.
(b) Remove and discard the nuts (9).
(c) Remove the pump (6).
(d) Discard the gasket (7) and the seal (8).
(8) Install COVER - BLANKING to all the connections and mating faces to prevent damage and contamination:
(a) Put COVER - PROTECTION on the mating faces of the pump and the gearbox.
(b) Put PLUG - BLANKING on the openings of the pump and the hoses.
(c) Put CAP - BLANKING on the electrical connector and the electrical receptacle.
(9) Remove the container from below the engine hydraulic pump and discard the drained hydraulic fluid.

[Rev.10 from 2021] 2026.04.01 00:23:35 UTC