Servicing of the TRAS Filter Module [PW11]

TASK 78-31-02-610-801-A
Servicing of the TRAS Filter Module

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

WARNING: ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.

WARNING: WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.

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

ZONE: 400
FIN: 4314KM1 ** ON A/C NOT FOR ALL
FIN: 4314KM2 ** 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 1 L (1/4 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	1	WRENCH - STRAP

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU1-0001)	lint-free cotton cloth
(Material No.PU6-0007)	hydraulic fluid
(Material No.PU6-0008)	hydraulic fluid

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
471CL
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
482CR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	RETAINER	AIPC 78-30-86-01-040
4	FILTER	AIPC 78-30-86-01-050
2	PACKING	AIPC 78-30-86-01-060
5	PACKING	AIPC 78-30-86-01-070
6	RING	AIPC 78-30-86-01-080

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-31-00-710-805-A	Operational Test of Thrust Reverser with MCDU
TASK 78-31-00-710-805-A-01	Thrust Reverser Cycling Test (Engine Running)
TRAS Filter Module - Servicing
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
TASK 29-10-00-864-001-A	Depressurize the Green 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)
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
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 29-14-00-614-002-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)

3. Job Set-up
Subtask 78-31-02-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833)

Subtask 78-31-02-864-050-A ** ON A/C NOT FOR ALL

B. Depressurization of the Hydraulic System
(1) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the applicable system.
(a) On the HYD/FUEL panel 40VU of the overhead panel
(b) On the ground service panel of the applicable hydraulic system.
(2) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(a) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001).
(b) Depressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-001).
(3) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(a) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(b) Depressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-001).

Subtask 78-31-02-040-050-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser System for Ground Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 78-31-02-010-050-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
(2) Remove the access panel on the pylon:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
471CL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
482CR

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 78-31-02-610-050-A ** ON A/C NOT FOR ALL

A. Servicing of the Thrust Reverser Actuation System (TRAS) Filter Module

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES. WORK ON THE HYDRAULIC SYSTEMS CAN BE DANGEROUS.

WARNING: YOU MUST NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. THE HYDRAULIC FLUID IS POISONOUS AND CAN BE ABSORBED INTO YOUR BODY. IF YOU ACCIDENTALLY GET HYDRAULIC FLUID IN YOUR EYES, MOUTH OR ON YOUR SKIN, FLUSH WITH WATER AND GET MEDICAL AID.

CAUTION: YOU MUST NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT- FREE CLOTH. THE HYDRAULIC FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND SOME PARTS.

(1) If you are replacing the filter (4) because the filter is clogged, make sure that you can see the red band on the filter module pop-out indicator. See Fig 1, view E.

TRAS Filter Module - Servicing ** ON A/C NOT FOR ALL

NOTE: The pop-out indicator deploys when the filter (4) is clogged and needs replacing.

(2) Put a lint-free cotton cloth (Material No.PU1-0001) below the filter module to collect the hydraulic fluid that possibly can spill.
(3) Pull out the locking pin about 0.08 in. (2.03 mm) from the filter module so that you can see the red band.
(4) Remove the filter bowl:

WARNING: BE CAREFUL WHEN YOU REMOVE THE FILTER BOWL. IT HAS A SPRING RETAINER WHICH PUTS A LOAD ON IT. IF YOU RELEASE YOUR PRESSURE ON THE FILTER BOWL WHILE YOU REMOVE IT, INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.

(a) Turn the filter bowl (1) until you remove the filter bowl (1) from the filter module. Use the WRENCH - STRAP.
(5) Pull the locking pin out further, if necessary, until the filter bowl (1) is away from the locking pin.
(6) Drain the hydraulic fluid from the filter bowl (1) into the CONTAINER 1 L (1/4 USGAL) or on a lint-free cotton cloth (Material No.PU1-0001) , as necessary.
(7) Remove the retainer (3) from the filter (4) and the filter bowl (1). Discard the used retainer (3).
(8) Remove the used filter (4) and the packing (2) from the filter bowl (1). Discard the used filter (4) and the packing (2).
(9) Remove the packing (5) from the filter bowl (1). Discard the used packing (5).
(10) Remove the ring (6) from the filter bowl (1). Discard the used ring (6).
(11) Clean the filter bowl (1) with a clean lint-free cotton cloth (Material No.PU1-0001) .
(12) Apply a layer of the hydraulic fluid (Material No.PU6-0007) on the new ring (6) and the new packings (2) and (5).

NOTE: You can use the hydraulic fluid (Material No.PU6-0008) as an alternative to the hydraulic fluid (Material No.PU6-0007) .

(13) Install the new AIPC 78-30-86-01-060 PACKING (2) on the new AIPC 78-30-86-01-050 FILTER (4).
(14) Install the new AIPC 78-30-86-01-080 RING (6) on the filter bowl (1).
(15) Install the new AIPC 78-30-86-01-070 PACKING (5) on the filter bowl (1). Make sure that the packing (5) is on the top of the ring (6).
(16) Put the new filter 4) and the packing (2) on the filter bowl (1).
(17) Attach the filter (4) and the packing (2) to the filter bowl (1) with the new AIPC 78-30-86-01-040 RETAINER (3). Insert the lugs on the retainer (3) in the groove in the filter bowl (1). Make sure that the retainer (3) is firmly against the end cap of the filter bowl (1).
(18) Pull out the locking pin about 0.08 in. (2.03 mm) from the filter module so that you can see the red band. Attach the filter bowl (1), and the filter (4) to the filter module. Turn the filter bowl (1) until it is against the filter module. Tighten the filter bowl (1) with the WRENCH - STRAP.
(19) Release the locking pin. Make sure that the locking pin goes in sufficiently so that you cannot see the red band on it.

5. Close-up
Subtask 78-31-02-863-050-A ** ON A/C NOT FOR ALL

A. Pressurization of the Aircraft Hydraulic Systems
(1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(a) Pressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
(a) Pressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-002).

Subtask 78-31-02-440-050-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 78-31-02-710-052-A ** ON A/C NOT FOR ALL

C. Do the operational test of the thrust reverser with the MCDU to make sure that there are no leaks in the filter module (1) (Ref. AMM TASK 78-31-00-710-805).

Subtask 78-31-02-410-050-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel on the pylon:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
471CL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
482CR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:31:05 UTC