Cleaning of the Engine Pump Solenoid-Valve

TASK 29-11-51-100-802-A
Cleaning of the Engine Pump Solenoid-Valve

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.

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	BLOWING EQUIPMENT - DRY AIR
No specific	1	CLEANING EQUIPMENT - ULTRASONIC
No specific	1	CONTAINER - HYDRAULIC FLUID RESISTANT
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BBD1)	Non Aqueous Cleaner-- Isopropyl Alcohol -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB, 197CB
FOR [1000EM1] (ENGINE-1)
437AL, 438AR

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 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-11-51-000-803-A	Removal of the Solenoid-Valve of Engine Pump
TASK 29-11-51-400-803-A	Installation of the Solenoid-Valve of Engine Pump
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-30-00-200-001-A	Check of System Pressure Indication on the ECAM Display Unit
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
Engine Pump Solenoid-Valve

3. Job Set-up
Subtask 29-11-51-860-070-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) Make sure that the reservoir of the Green hydraulic system is depressurized
(Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the ground service panel 197CB is open.
(4) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Green hydraulic system:

On the ground service panel 197CB.

(5) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Green hydraulic reservoir:

On the access door 195BB.

(6) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.

Subtask 29-11-51-941-065-A ** ON A/C NOT FOR ALL

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

Make sure that the WARNING NOTICE(S) is (are) in position 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) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Green 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).

Subtask 29-11-51-865-070-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35

4. Procedure
Subtask 29-11-51-130-051-A ** ON A/C NOT FOR ALL

A. Cleaning of the Engine Pump Solenoid-Valve
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Put a CONTAINER - HYDRAULIC FLUID RESISTANT below the hydraulic connections of the engine pump to collect the remaining fluid.
(4) Remove the engine pump solenoid-valve (Ref. AMM TASK 29-11-51-000-803).
(5) Flush the bore.
(a) Flush the bore of the solenoid valve (1) many times with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) .
(6) Dry the bore of the solenoid valve (1) with a clean BLOWING EQUIPMENT - DRY AIR.
(7) Ultrasonic cleaning
(a) Fill the CLEANING EQUIPMENT - ULTRASONIC with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) to the level given in the manufacturer's handbook.
(b) Carefully put the solenoid valve into a basket, then put the basket fully into the liquid. Do not put the electrical connector into the liquid.
(c) Start the CLEANING EQUIPMENT - ULTRASONIC and let it operate for ten minutes.
(8) Dry all the solenoid valve components with the clean BLOWING EQUIPMENT - DRY AIR.
(9) Examine the components after the cleaning to make sure that the valve body (3) ports C, P and R and the valve spool (2) are clean.
(10) Install the engine pump solenoid-valve (Ref. AMM TASK 29-11-51-400-803).

Subtask 29-11-51-865-071-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/CTL	1701GK	R35

Subtask 29-11-51-710-065-A ** ON A/C NOT FOR ALL

C. Test
(1) Do a check of the reservoir fluid level (Ref. AMM TASK 29-30-00-200-001) 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 driven 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 29-30-00-200-001) 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 29-11-51-410-058-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the container.
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(4) Close the access door 197CB of the ground service panel.

Subtask 29-11-51-942-059-A ** ON A/C NOT FOR ALL

B. Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 00:18:31 UTC