Installation of the Engine-Pump Case-Drain Filter Differential Pressure Indicator

TASK 29-11-43-400-043-A
Installation of the Engine-Pump Case-Drain Filter Differential Pressure Indicator

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.

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	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 14.7 and 12.5 m.N (130.09 and 110.62 lbf.in )

B. Consumable Materials

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

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB, 197CB, 437AL

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
20	RING	AIPC 29-11-43-02-060
30	PACKING	AIPC 29-11-43-02-070
30	PACKING	AIPC 29-11-43-02-080

E. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-11-00-710-001-A	Operational Test of the Green Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
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 Case-Drain Filter Differential Pressure Indicator

3. Job Set-up
Subtask 29-11-43-860-062-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 Green hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Green hydraulic system:

On the Green ground service panel 197CB.

(4) Make sure that the WARNING NOTICE(S) is (are) in position on the access door 195BB to tell persons not to pressurize the Green hydraulic reservoir.
(5) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the engine.
(6) Make sure that the fan cowl door 437AL is open (Ref. AMM TASK 71-13-00-010-040).

Subtask 29-11-43-941-065-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).
(6) Make sure that a CONTAINER 5 L (1.32 USGAL) is in position below the case drain filter differential pressure indicator.

4. Procedure
Subtask 29-11-43-420-059-A ** ON A/C NOT FOR ALL

A. Installation of the Engine-Pump Case-Drain Filter Differential Pressure Indicator
(1) Remove the blanking cover from the case drain filter differential pressure indicator port.
(2) Install the ring (20) and the packings (30):

CAUTION: RING (20) IS FITTED AT THE NEAREST POSITION TO THE HEXHEAD.

CAUTION: USE A NEW RING (20) AND PACKINGS (30) WHEN FITTING THE DIFFERENTIAL PRESSURE INDICATOR (10) IN THE FILTER MODULE PORT.

(a) Put the AIPC 29-11-43-02-060 RING (20) on the differential pressure indicator (10).
(b) Lubricate the AIPC 29-11-43-02-070 PACKING (30) and AIPC 29-11-43-02-080 PACKING (30) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) and put the packings (30) on the differential pressure indicator (10).
(c) Install the differential pressure indicator (10) in the filter module port.
(d) TORQUE the differential pressure indicator (10) to between 14.7 and 12.5 m.N (130.09 and 110.62 lbf.in )

.
(e) With the lockwire, safety the differential pressure indicator (10) to the filter module head.

Subtask 29-11-43-710-057-A ** ON A/C NOT FOR ALL

B. Operational Test
(1) Do an operational test of the Green hydraulic system (Ref. AMM TASK 29-11-00-710-001).
(2) During the dry motoring of the Engine 1, make sure that:

There are no leaks from the differential pressure indicator (10).
The differential pressure indicator (10) is not extended.

5. Close-up
Subtask 29-11-43-942-054-A ** ON A/C NOT FOR ALL

A. Remove the safety precautions
(1) Remove the WARNING NOTICE(S).
(2) Remove the container.
(3) Make sure that the work area is clean and clear of tools and other items.

Subtask 29-11-43-410-057-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the left fan cowl door 437AL (Ref. AMM TASK 71-13-00-410-040).
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 00:16:11 UTC