Installation of the Engine-2 Pump-Case-Drain Check-Valve

TASK 29-13-37-400-802-A
Installation of the Engine-2 Pump-Case-Drain Check-Valve

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: 423
FIN: 3041GM ** 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 2M (6 FT) - ADJUSTABLE
No specific	1	CONTAINER 20L (5 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 79.5 and 78.5 m.N (58.63 and 57.89 lbf.ft )
No specific	Torque wrench: range to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )
No specific	Torque wrench: range to between 7.95 and 7.85 m.daN (58.63 and 57.89 lbf.ft )

B. Consumable Materials

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

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
423	UPPER FWD PYLON
195BB, 198CB
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	PACKING	AIPC 29-13-86-01-060

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 20-23-22-910-001-A	Marking of the Unions after Application of Standard or Specific Tightening Torque
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-13-00-710-002-A	Operational Test of the Yellow Hydraulic System
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 71-13-00-410-802-A	Closing of the Fan Cowl Doors
Engine 2 Pump Case-Drain Check-Valve

3. Job Set-up
Subtask 29-13-37-860-056-A ** ON A/C NOT FOR ALL

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 29-13-37-941-056-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).
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 access door 198CB, 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) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 29-13-37-010-053-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the pylon.

4. Procedure
Subtask 29-13-37-420-053-A ** ON A/C NOT FOR ALL

A. Installation of the Engine-2 Pump-Case-Drain Check-Valve

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the hydraulic line end-fittings are serviceable.
(4) Make sure that a CONTAINER 20L (5 USGAL) is in position below the hydraulic tube connection.
(5) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packing (5).
(6) Install the new AIPC 29-13-86-01-060 PACKING (5) on the check valve (6).
(7) Remove the blanking plug from the tube (1).
(8) Install the check valve (6) on the tube (1).
(9) TORQUE the check valve (6) to between 7.95 and 7.85 m.daN (58.63 and 57.89 lbf.ft )

.
(10) Install the anti-rotate key (2) to the check valve (6).
(11) Install the washers (3) and screws (4) to the anti-rotate key (2).
(12) Tighten the screws (4).
(13) Remove the blanking plug from the tube (7).
(14) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the coupling nut of the tube (7).
(15) Connect the tube (7) to the check valve (6).
(16) TORQUE the coupling nut of the tube (7) to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )

.
(17) Identify the tightened union nuts with a red line
(Ref. AMM TASK 20-23-22-910-001).

Subtask 29-13-37-420-053-B ** ON A/C NOT FOR ALL

A. Installation of the Engine-2 Pump-Case-Drain Check-Valve

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE 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) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packing (5).
(6) Install the new AIPC 29-13-86-01-060 PACKING (5) on the check valve (6).
(7) Remove the blanking plug from the tube (1).
(8) Install the check valve (6) on the tube (1).
(9) TORQUE the check valve (6) to between 79.5 and 78.5 m.N (58.63 and 57.89 lbf.ft )

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

(a) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the coupling nut of the tube (7).
(15) Connect the tube (7) to the check valve (6).
(16) TORQUE the coupling nut of the tube (7) to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )

.
(17) Identify the tightened union nuts with a red line
(Ref. AMM TASK 20-23-22-910-001).

Subtask 29-13-37-710-052-A ** ON A/C NOT FOR ALL

B. Operational Test
(1) Do the operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).
(2) After the dry-motoring, make sure that there were no leaks from the hydraulic connections.
(3) 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).

5. Close-up
Subtask 29-13-37-410-053-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Remove the container.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Remove the WARNING NOTICE(S).
(4) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(5) Close access door 198CB.
(6) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 00:20:41 UTC