Installation of the Solenoid Valve of the Engine Pump

TASK 29-13-51-400-810-A
Installation of the Solenoid Valve of the Engine Pump

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.

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

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

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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	1	PLIERS - CONNECTOR, JAW, SOFT
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 50 and 40 lbf.in (0.57 and 0.45 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
440	ENG 2 AIR INTAKE, FAN AND ACCESS GEARBOX
195BB, 198CB
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-12-29-611-002-A	Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
TASK 29-10-00-710-004-A	Operational Check of EDP Depressurization
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 29-30-00-200-002-A	Check of the Reservoir Quantity Indication on the ECAM Display Unit
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
Solenoid Valve of the Engine Pumps P/N 3031863-001 and P/N 3031863-002

3. Job Set-up
Subtask 29-13-51-860-092-A

A. Aircraft Maintenance Configuration
(1) Make sure that the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-10-00-864-002)
(2) Make sure that the reservoir of the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-14-00-614-001)

Subtask 29-13-51-941-078-A

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

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

(2) Make sure that a WARNING NOTICE(S) is in position to tell persons not to pressurize the Yellow hydraulic system:

On the HYD section of panel 40VU
On the ground service panel of the Yellow hydraulic system.

(3) Make sure that a WARNING NOTICE(S) is in position on access door 195BB to tell persons not to pressurize the reservoir of the Yellow hydraulic system.
(4) On the center pedestal, on ENG panel 115VU:

Make sure that the ENG/MODE selector switch is in the NORM position.
Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
Make sure that WARNING NOTICE(S) are in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.

(5) On the ENG section of maintenance panel 50VU:

Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 29-13-51-865-091-A

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36

Subtask 29-13-51-010-079-A

D. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the engine.

4. Procedure
Subtask 29-13-51-420-077-B

A. Installation of the Solenoid Valve of the Engine Pumps P/N 3031863-001 and P/N 3031863-002
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the shipping cover from the new solenoid valve (4).
(4) Make sure that the packings and the backup rings are correctly installed in the solenoid valve grooves.
(5) Lubricate these parts:

CAUTION: DO NOT USE HIGH-DENSITY FLUID SKYDROL 500B-4 FOR A320NEO FAMILY. THE FLUID CAN CAUSE DAMAGE TO THE HYDRAULIC SYSTEM COMPONENTS.

(a) Lightly lubricate the packings and the backup rings of the solenoid valve (4) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(6) Remove the COVER - BLANKING, HYDRAULIC RESISTANT from the port of the engine pump (1).
(7) Installation of the solenoid valve (4) on the engine pump (1)

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) Make sure that a CONTAINER 5 L (1.32 USGAL) is in position below the engine pump (1).
(b) Carefully put the solenoid valve (4) in the vertical position on the mounting surface and move it down into the pump bore.
(c) Make sure that you do not cause damage to the packings and the backup rings during the installation.
(d) Carefully turn the solenoid valve (4) to align the mounting hole with the bolt holes in the engine pump (1).
(8) Install the bolts (3).
(9) TORQUE the bolts (3) to between 50 and 40 lbf.in (0.57 and 0.45 m.daN )

.
(10) Connection of the electrical connector

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.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU CONNECT THEM. SOLID AND/OR LIQUID CONTAMINATION CAN CAUSE DAMAGE TO THE COMPONENTS.

(a) Remove the CAP - BLANKING from the electrical connector (2).
(b) Make sure that the electrical connector (2) is clean and in the correct condition.
(c) Connect the electrical connector (2) to the solenoid valve (4).
(d) Tighten the connector ring with your hand.
(e) Turn the connector ring from one eighth to a quarter of a turn with PLIERS - CONNECTOR, JAW, SOFT until the connector ring locks.

Subtask 29-13-51-865-092-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36

Subtask 29-13-51-710-070-A

C. Test(s)
(1) Do a check of the reservoir fluid level (Ref. AMM TASK 29-30-00-200-002) and fill the reservoir, if necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(2) Do the operational test of the engine pump depressurization (Ref. AMM TASK 29-10-00-710-004).
(a) Make sure that there is no leak from the solenoid valve interface.
(3) Do a check of the reservoir fluid level again (Ref. AMM TASK 29-30-00-200-002) and fill the reservoir, if necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).

5. Close-up
Subtask 29-13-51-410-071-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Close access doors 198CB and 195BB.
(4) Remove the container.
(5) Remove the WARNING NOTICE(S).
(6) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 00:23:49 UTC