Removal of the Solenoid Valve of the Green Engine Driven Pump

TASK 29-11-51-000-806-A
Removal of the Solenoid Valve of the Green Engine Driven Pump

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

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.

CAUTION: HYDRAULIC FLUID CAN CAUSE DAMAGE TO EQUIPMENT. IF HYDRAULIC FLUID FALLS ON A SURFACE, IMMEDIATELY CLEAN THE SURFACE WITH A CLEAN CLOTH.

ZONE: 430

1. Reason for the Job
This procedure is applicable only on engine pumps P/N 3031863-001 and P/N 3031863-002.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	CAP - BLANKING
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	1	COVER - BLANKING, HYDRAULIC RESISTANT
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
430	ENG 1 AIR INTAKE, FAN AND ACCESS GEARBOX
195BB, 197CB
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 452AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-11-51-000-805-A	Removal of the Green Engine Driven Pump
TASK 29-11-51-400-805-A	Installation of the Green Engine-Driven Pump
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-51-40-000-801-A	Removal of the IDG-EDP-MON Harness
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
Solenoid Valve of the Engine Pumps P/N 3031863-001 and P/N 3031863-002

3. Job Set-up
Subtask 29-11-51-860-089-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) Depressurize the reservoir of the Green hydraulic system
(Ref. AMM TASK 29-14-00-614-001).

Subtask 29-11-51-941-075-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On AIR COND panel 30VU:

Make sure that the APU BLEED pushbutton switch is released (ON legend off).
Put a WARNING NOTICE(S) in position to tell persons not to operate the APU BLEED pushbutton switch.

(2) Open access door 197CB.
(a) On the ground service panel, put WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system.
(3) On the HYD section of panel 40VU:
(a) Put WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic system.
(4) Open access door 195BB.
(a) Put WARNING NOTICE(S) in position to tell persons not to pressurize the reservoir of the Green hydraulic system.
(5) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 29-11-51-865-087-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	H12
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33

Subtask 29-11-51-010-074-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR

Subtask 29-11-51-040-057-A ** ON A/C NOT FOR ALL

E. Deactivation of the Thrust Reverser for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 29-11-51-010-075-A ** ON A/C NOT FOR ALL

F. Get Access
(1) Open the right thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR

4. Procedure
Subtask 29-11-51-020-067-A ** ON A/C NOT FOR ALL

A. Removal of the Solenoid Valve of the Engine Pumps P/N 3031863-001 and P/N 3031863-002
(1) Disconnection of the IDG-EDP-MON harness (1030GK-A)

CAUTION: DO NOT TWIST OR BEND THE ELECTRICAL HARNESS WHEN YOU DISCONNECT/CONNECT THE ELECTRICAL CONNECTOR. IF YOU DO, YOU CAN CAUSE DAMAGE TO THE HARNESS AND THUS CAUSE ELECTRICAL CIRCUIT DEFECTS.

(a) Disconnect the IDG-EDP-MON harness (2) from the solenoid valve (4) (Ref. AMM TASK 71-51-40-000-801).
(b) Put a CAP - BLANKING on the disconnected IDG-EDP-MON harness (2) and the electrical receptacle.
(c) Safety the IDG-EDP-MON harness (2).
(2) Clean the component interface and/or the adjacent area to make sure that no contamination goes into the bore.
(3) Put a CONTAINER 5 L (1.32 USGAL) below the solenoid valve (4) to collect the remaining fluid.
(4) Remove the bolts (3).
(5) Removal of the solenoid valve (4)

CAUTION: MAKE SURE THAT THERE ARE NO LIQUIDS, DUST OR CONTAMINANTS ON THE MOUNTING SURFACE. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE EQUIPMENT CAN OCCUR.

(a) Hold the solenoid valve (4) in the vertical position to the mounting surface and pull it out from the engine pump (1).
(6) Put a COVER - BLANKING, HYDRAULIC RESISTANT on the open port of the engine pump (1).
(7) Make sure that the packings and the backup rings are on the removed solenoid valve (4):

If not, replace the engine pump (1) (Ref. AMM TASK 29-11-51-000-805) and (Ref. AMM TASK 29-11-51-400-805).

[Rev.10 from 2021] 2026.04.01 08:01:27 UTC