Installation of the Lube Trim Check Valve [PW11]

TASK 79-21-13-400-801-A
Installation of the Lube Trim Check Valve

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

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

CAUTION: DO NOT LET ENGINE FUEL, OIL OR HYDRAULIC FLUID SPILL ON THE ENGINE. YOU MUST IMMEDIATELY REMOVE UNWANTED FUEL, OIL OR HYDRAULIC FLUID WITH A CLOTH. FUEL, OIL OR HYDRAULIC FLUID CAN CAUSE DAMAGE TO SOME ENGINE PARTS.

FIN: 4049EM ** ON A/C NOT FOR ALL

1. Reason for the Job
Use this procedure to install the lube trim check valve.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 90 and 80 lbf.in (1.02 and 0.90 m.daN )
No specific	Torque wrench: range to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )
No specific	Torque wrench: range to between 1050 and 950 lbf.in (11.87 and 10.74 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P03-001)	lubricant, aircraft turbine engine
(Material No.P06-053)	Sealing Ring Lubricant
(Material No.P06-054)	Antigalling Compound

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	SEAL	EIPC 79-21-13-01-080
1	PACKING	EIPC 79-21-13-01-130

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-720-811-A	Test No. 3A - Idle Power Test
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
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 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
TASK 79-00-00-610-801-A	Check and Fill the Engine Oil
Lube Trim Check Valve

3. Job Set-up
Subtask 79-21-13-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 79-21-13-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR

Subtask 79-21-13-040-051-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser System for 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) Make sure that you did the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 79-21-13-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the left thrust reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL

4. Procedure
Subtask 79-21-13-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Lube Trim Check Valve

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

(1) Removal of the protection covers

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
(2) Install the lube trim check valve (6) on the Variable Oil Reduction Valve (VORV) manifold and tube (LR36) (5) as follows: See the figure.
(a) Apply P03-001lubricant, aircraft turbine engine or Sealing Ring Lubricant (Material No.P06-053) to the new EIPC 79-21-13-01-130 PACKING (1) and EIPC 79-21-13-01-080 SEAL (3).
(b) Install the new packing (1) to the lube trim check valve (6).
(c) Apply Antigalling Compound (Material No.P06-054) to the threads of the three bolts (2) and (4).

NOTE: For new or refurbished bolts or nuts with baked-on lubricant, do not do the wet application.

(d) Install the lube trim check valve (6) to the VORV manifold with the three bolts (2).
(e) TORQUE the three bolts (2) to between 90 and 80 lbf.in (1.02 and 0.90 m.daN )

.
(f) Install the seal (3) and tube (LR36) (5) to the lube trim check valve (6) with the three bolts (4).
(g) TORQUE the three bolts (4) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

.
(h) Install the tube (LR36) (5) to the tube (LR37) B-nut.
(i) Tighten the tube (LR37).

CAUTION: USE A SECOND WRENCH TO HOLD THE MATING PARTS WHEN YOU LOOSEN OR TIGHTEN THE TUBE OR HOSE NUTS. IF YOU DO NOT OBEY THIS CAUTION, YOU CAN TWIST OR CAUSE DAMAGE TO THE TUBES OR HOSES.

1 TORQUE the tube (LR37) to between 1050 and 950 lbf.in (11.87 and 10.74 m.daN )

.
(3) Fill the oil (Ref. AMM TASK 79-00-00-610-801).
(4) Examine the assembly for foreign objects, damage and correct assembly.

5. Close-up
Subtask 79-21-13-410-050-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) Close the left thrust reverser cowl-door (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL

Subtask 79-21-13-440-050-A ** ON A/C NOT FOR ALL

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

Subtask 79-21-13-410-051-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

Subtask 79-21-13-720-050-A ** ON A/C NOT FOR ALL

D. Test
(1) Do the test No.3 - Idle Power Test (Ref. AMM TASK 71-00-00-720-811).

[Rev.10 from 2021] 2026.04.01 03:41:50 UTC