Installation of the Low Pressure Filter Assembly

TASK 29-12-44-400-001-A
Installation of the Low Pressure Filter Assembly

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

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

FIN: 2002GM

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	CONTAINER 10 L(2 1/2 USGAL)
No specific	1	PLUG - BLANKING
No specific	1	SCRAPER - NON METALLIC
No specific	2	WARNING NOTICE(S)
No specific	Torque wrench: range to between 5.3 and 4.8 m.daN (39.09 and 35.40 lbf.ft )
No specific	Torque wrench: range to between 7.4 and 7.29 m.daN (54.57 and 53.76 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.04QAB2)	Coating_- Flexible Structure
(Material No.06AAA1)	Polysulfide Sealant_General Purpose Brushable -
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
197FB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
16	PACKING	AIPC 29-12-04-13-018
9	PACKING	AIPC 29-12-04-13-018
16	PACKING	AIPC 29-12-84-12-120
9	PACKING	AIPC 29-12-84-12-120

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-10-00-863-003-A	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 29-33-11-000-002-A	Removal of the Temperature Transmitter
TASK 29-33-11-400-002-A	Installation of the Temperature Transmitter
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
Low Pressure Filter-Assembly

3. Job Set-up
Subtask 29-12-44-860-056-A

A. Aircraft Maintenance Configuration

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Make sure that the warning notices are in position to tell persons not to pressurize the Blue hydraulic system:

One WARNING NOTICE(S) in the cockpit on the hydraulic section 40VU of the overhead panel
One WARNING NOTICE(S) on the ground service panel of the Blue hydraulic system.

(3) Make sure that the Blue hydraulic system is depressurized.
(Ref. AMM TASK 29-00-00-864-001).
(4) Make sure that the reservoir of the Blue hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
(5) Make sure that the access panel 197FB is open.
(6) Make sure that the CONTAINER 10 L(2 1/2 USGAL) is in position below the location of the low pressure filter-assembly.

Subtask 29-12-44-865-055-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
49VU	HYD/HYD/PRESS/XMTR	1841GN	C11
121VU	HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST	1881GP	N35
123VU	B HYD/ELEC PUMP	2701GJ	AB09

4. Procedure
Subtask 29-12-44-560-052-A

A. Preparation of the Replacement Component
(1) Remove the components which are installed in the removed low pressure filter-assembly (8) as follows:
(a) Remove the temperature transmitter (2) (Ref. AMM TASK 29-33-11-000-002).
(b) Remove the union (15) and the packing (16).
(c) Discard the packing (16).
(d) Remove the union (10) and the packing (9).
(e) Discard the packing (9).
(f) Install a PLUG - BLANKING in the open ports of the low pressure filter-assembly (8) and all of the removed components.
(2) Install the removed components on the replacement low pressure filter-assembly (8) as follows:
(a) Remove the blanking plugs from the ports of the low pressure filter-assembly (8) and all of the removed components.
(b) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packings and the threads of the unions.
(c) Install the pressure transmitter (2) in the low pressure filter-assembly (8) (Ref. AMM TASK 29-33-11-400-002).
(d) Install the union (15) as follows:
1 Put the new AIPC 29-12-04-13-018 PACKING (16) or AIPC 29-12-84-12-120 PACKING (16) in position on the union (15).
2 Install the union (15) in the low pressure filter-assembly (8).
3 TORQUE the union (15) to between 5.3 and 4.8 m.daN (39.09 and 35.40 lbf.ft )

.
(e) Install the union (10) as follows:
1 Put the new AIPC 29-12-04-13-018 PACKING (9) or AIPC 29-12-84-12-120 PACKING (9) in position on the union (10).
2 Install the union (10) in the low pressure filter-assembly (8).
3 TORQUE the union (10) to between 5.3 and 4.8 m.daN (39.09 and 35.40 lbf.ft )

Subtask 29-12-44-420-052-A

B. Installation of the Low Pressure Filter-Assembly (2002GM)

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.

CAUTION: YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.

(1) Remove the sealants with a SCRAPER - NON METALLIC from:

The mating surface of the low pressure filter-assembly (8)
The bracket (1).

(2) Examine the bracket (1) for cracks, corrosion or other damage.
(3) Apply a layer of the Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the mating surface of the low pressure filter-assembly (8).
(4) Remove the blanking plugs from the pipe connections.
(5) Put the low pressure filter-assembly (8) in position on the bracket (1).
(6) Install the four bolts (7) with the washers (6) and the bonding straps (4).
(7) Tighten the bolts (7).
(8) Make sure that the hydraulic line end-fittings are serviceable.
(9) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the pipe end-fittings.
(10) Connect the pipe (13) to the union (15).
(11) TORQUE the pipe end-fitting (14) to between 7.4 and 7.29 m.daN (54.57 and 53.76 lbf.ft )

.
(12) Connect the pipe (12) to the union (10).
(13) TORQUE the pipe end-fitting (11) to between 7.4 and 7.29 m.daN (54.57 and 53.76 lbf.ft )

.
(14) Seal the connection of the bonding straps (4) and (5) with the Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) .
(15) Apply the Coating_- Flexible Structure (Material No.04QAB2) (dyed blue) to the sealants.
(16) Remove the blanking caps from the electrical connectors.
(17) Make sure that all the electrical connections are clean and in the correct condition.
(18) Connect the electrical connector (3):

CAUTION: MAKE SURE THAT THE BONDING STRAP(S) IS(ARE) CONNECTED BEFORE YOU CONNECT THE ELECTRICAL CONNECTOR(S).

(a) Connect the electrical connector (3) to the temperature transmitter (2).

Subtask 29-12-44-865-056-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
49VU	HYD/HYD/PRESS/XMTR	1841GN	C11
121VU	HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST	1881GP	N35
123VU	B HYD/ELEC PUMP	2701GJ	AB09

Subtask 29-12-44-790-052-A

D. Test
(1) Pressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(2) Make sure that the fluid level in the reservoir of the Blue hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).
(3) Pressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-863-003).
(4) Examine the connections of the low pressure filter-assembly (8) and make sure that there are no leaks.
(5) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(6) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(7) On the ECAM control panel on the center pedestal, push the HYD pushbutton. Make sure that the HYD page on the system (lower) display comes on.
(8) Make sure that the ECAM system shows no overtemperature.
(9) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).

5. Close-up
Subtask 29-12-44-860-057-A

A. Put the aircraft back to the serviceable condition.
(1) Make sure that the fluid level in the reservoir of the Blue hydraulic system is correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the access panel 197FB.
(4) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 00:19:37 UTC