W DOC AIRBUS | AMM A320F

Installation of the Last-Chance Oil Strainer [PW11]

TASK 79-21-18-400-801-A
Installation of the Last-Chance Oil Strainer

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.
ZONE: 400
1. Reason for the Job
Use this procedure to install the last chance oil strainers.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 1M(3 FT)
No specific
Torque wrench: range to between 18 and 15 lbf.in (0.20 and 0.17 m.daN ) T
No specific
Torque wrench: range to between 35 and 30 lbf.in (0.40 and 0.34 m.daN ) T
No specific
Torque wrench: range to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T
No specific
Torque wrench: range to between 90 and 80 lbf.in (1.02 and 0.90 m.daN ) T
No specific
Torque wrench: range to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T
No specific
Torque wrench: range to between 225 and 200 lbf.in (2.54 and 2.26 m.daN ) T
No specific
Torque wrench: range to between 375 and 340 lbf.in (4.24 and 3.84 m.daN ) T
No specific
Torque wrench: range to between 525 and 475 lbf.in (5.93 and 5.37 m.daN ) T
No specific
Torque wrench: range to between 575 and 475 lbf.in (6.50 and 5.37 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.P03-001)
lubricant, aircraft turbine engine
(Material No.P05-395)
beeswax (was: P06-015)
(Material No.P05-396)
paraffin wax blend
(Material No.P06-054)
Antigalling Compound
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
48
PACKING
EIPC 79-21-18-01-070
72
PACKING
EIPC 79-21-49-02-100
37
GASKET
EIPC 79-21-49-07-142
 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 72-21-08-400-801-A
Installation of the Fan Exit Liner Segments
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
TASK 79-21-01-400-801-A
Installation of the Lubrication and Scavenge Oil Pump
F No. 3 Compartment Gearbox Bevel-Gear Strainer and Tube (LP30)
F No. 5 And 6 Compartment Strainer and Tube (LP46)
F No. 4 Compartment Strainer and Tube (LP41) Installation - Config-2 Improved Sealing Configuration
F Gearbox Strainer
F No. 3 Compartment Bevel-Gear Strainer and Tube (LP32)
F No. 1 And 1.5 Compartment Strainer and Tee Assembly (LP60)
F No. 4 Compartment Strainer and Tube (LP41) Installation - Config-1 Initial Design Configuration
3. Job Set-up
Subtask 79-21-18-941-051-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 79-21-18-010-052-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.
   (2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 79-21-18-040-051-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 79-21-18-010-053-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Make sure that the thrust reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
4. Procedure
CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
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.
Subtask 79-21-18-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Last-Chance Oil Strainer
   (1) Removal of the protection cover:
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.
Subtask 79-21-18-420-056-A ** ON A/C NOT FOR ALL
B. Install the No. 3 bearing-compartment gearbox bevel-gear last-chance oil-strainer (3) and the tube (LP30) (2) as follows:
F No. 3 Compartment Gearbox Bevel-Gear Strainer and Tube (LP30) ** ON A/C NOT FOR ALL
   (1) Install the strainer (3) to the tube (LP111).
   (2) Install the metering plug (1) to the tube (LP30) (2).
   (3) Connect the tube (LP30) (2) B-nut to the oil manifold fingertight.
   (4) Connect the tube (LP30) (2) to the tube (LP111) B-nut.
   (5) TORQUE the tube (LP111) B-nut to between 375 and 340 lbf.in (4.24 and 3.84 m.daN ) T.
   (6) TORQUE the tube (LP30) (2) B-nut to between 375 and 340 lbf.in (4.24 and 3.84 m.daN ) T.
Subtask 79-21-18-420-055-A ** ON A/C NOT FOR ALL
C. Install the No. 5 and 6 bearing-compartment last-chance oil-strainer (19) and the tube (LP46) (15) as follows:
F No. 5 And 6 Compartment Strainer and Tube (LP46) ** ON A/C NOT FOR ALL
   (1) Apply to Antigalling Compound (Material No.P06-054) the threads of the five bolts (14).
   (2) Install the strainer (19) to the tube (LP46) (15).
   (3) Connect the tube (LP46) (15) B-nut to the tube (LP45) fingertight.
   (4) Connect the tube (LP46) (15) to the tube (LP131) B-nut fingertight.
   (5) Install the tube (LP46) (15) to the brackets with the five clamps (13) and bolts (14) finger-tight.
   (6) TORQUE the tube (LP46) (15) B-nut to between 225 and 200 lbf.in (2.54 and 2.26 m.daN ) T.
   (7) TORQUE the tube (LP131) B-nut to between 225 and 200 lbf.in (2.54 and 2.26 m.daN ) T.
   (8) TORQUE the five bolts (14) to between 35 and 30 lbf.in (0.40 and 0.34 m.daN ) T.
   (9) Install the heat shields (17) and (18) to the tube (LP46) (15) with the two hoses clamps (16).
   (10) TORQUE the two hose clamps (16) to between 18 and 15 lbf.in (0.20 and 0.17 m.daN ) T.
Subtask 79-21-18-420-058-A ** ON A/C NOT FOR ALL
D. Install the No. 4 bearing compartment last chance oil strainer (36) and the tube (LP41) (35) as follows:
F No. 4 Compartment Strainer and Tube (LP41) Installation - Config-1 Initial Design Configuration ** ON A/C NOT FOR ALL

PRE SB C−79−00−0019A (Config−1 Initial Design Configuration)

   (1) Apply Antigalling Compound (Material No.P06-054) to the threads of the two bolts (32) and three bolts (33).
NOTE: For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application.
   (2) Install the bracket (31) to the bracket with the two bolts (32).
   (3) TORQUE the two bolts (32) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
   (4) Install the strainer (36) to the tube (LP121).
   (5) Connect the tube (LP121) B-nut to the tube (LP41) (35) fingertight.
   (6) Install the metering plug (38) to the tube (LP41) (35).
   (7) Connect the tube (LP41) (35) B-nut to the tube (LP45) fingertight.
   (8) Install the tube (LP41) (35) to the two brackets with the two clamps (34) and bolts (33) fingertight.
   (9) Use a second wrench as necessary and TORQUE the tube (LP121) B-nut to between 575 and 475 lbf.in (6.50 and 5.37 m.daN ) T.
   (10) Use a second wrench as necessary and TORQUE the tube (LP41) (35) B-nut to between 375 and 340 lbf.in (4.24 and 3.84 m.daN ) T.
   (11) Install the heat shield (29) to the tube (LP41) (35) and the bracket (31) with the clamp (30) and the bolt (33).
   (12) TORQUE the three bolts (33) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.

END OF PRE SB C−79−00−0019A (Config−1 Initial Design Configuration)
Subtask 79-21-18-420-054-A ** ON A/C NOT FOR ALL
E. Install the No. 4 bearing compartment last chance oil strainer (36) and the tube (LP41) (35) as follows:
F No. 4 Compartment Strainer and Tube (LP41) Installation - Config-2 Improved Sealing Configuration ** ON A/C NOT FOR ALL

POST SB C-79-00-0019A (Config-2 Improved Sealing Configuration)

   (1) Apply Antigalling Compound (Material No.P06-054) to the threads of the two bolts (32) and three bolts (33).
NOTE: For new or refurbished bolts or nuts with baked on lubricant, do not do the wet application.
   (2) Install the bracket (31) to the bracket with the two bolts (32).
   (3) TORQUE the two bolts (32) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN ) T.
   (4) Apply P03-001lubricant, aircraft turbine engine to a new EIPC 79-21-49-07-142 GASKET (37).
   (5) Install the gasket (37) to the tube (LP41) (35).
   (6) Install the strainer (36) to the tube (LP121).
   (7) Connect the tube (LP121) B-nut to the tube (LP41) (35) fingertight.
   (8) Install the metering plug (38) to the tube (LP41) (35).
   (9) Connect the tube (LP41) (35) B-nut to the tube (LP45) fingertight.
   (10) Install the tube (LP41) (35) to the two brackets with the two clamps (34) and bolts (33) fingertight.
   (11) Use a second wrench and TORQUE the tube (LP121) B-nut to between 575 and 475 lbf.in (6.50 and 5.37 m.daN ) T.
   (12) Use a second wrench and TORQUE the tube (LP41) (35) B-nut to between 375 and 340 lbf.in (4.24 and 3.84 m.daN ) T.
   (13) Install the heat shield (29) to the tube (LP41) (35) and the bracket (31) with the clamp (30) and the bolt (33).
   (14) TORQUE the three bolts (33) to between 44 and 38 lbf.in (0.50 and 0.43 m.daN ) T.

END OF POST SB C-79-00-0019A (Config-2 Improved Sealing Configuration)
Subtask 79-21-18-420-053-A ** ON A/C NOT FOR ALL
F. Install the gearbox last-chance oil-strainer (47) as follows:
F Gearbox Strainer ** ON A/C NOT FOR ALL
   (1) Install the strainer (47) on the Oil Control Module (OCM).
   (2) Apply P03-001lubricant, aircraft turbine engine to a new EIPC 79-21-18-01-070 PACKING (48).
   (3) Install the new packing (48) on the plate (46).
   (4) Apply Antigalling Compound (Material No.P06-054) to the threads of two bolts (49).
NOTE: For new or refurbished nuts or bolts with baked-on lubrication, do not do the wet application.
   (5) Install the plate (46) on the OCM with the two bolts (49).
   (6) TORQUE the two bolts (49) to between 90 and 80 lbf.in (1.02 and 0.90 m.daN ) T.
Subtask 79-21-18-420-052-A ** ON A/C NOT FOR ALL
G. Install the No. 3 bearing-compartment bevel-gear last-chance oil-strainer (59) and tube (LP32) (60) as follows:
F No. 3 Compartment Bevel-Gear Strainer and Tube (LP32) ** ON A/C NOT FOR ALL
   (1) Install the strainer (59) to the tube (LP112).
   (2) Install the metering plug (61) to tube (LP32) (60).
   (3) Connect the tube (LP32) (60) B-nut to the oil manifold finger-tight.
   (4) Connect the tube (LP112) B-nut to the tube (LP32) (60).
   (5) TORQUE the tube (LP112) B-nut to between 375 and 340 lbf.in (4.24 and 3.84 m.daN ) T.
   (6) TORQUE the tube (LP32) (60) B-nut to between 225 and 200 lbf.in (2.54 and 2.26 m.daN ) T.
Subtask 79-21-18-420-051-A ** ON A/C NOT FOR ALL
H. Install the No. 1 and 1.5 bearing-compartment last-chance oil-strainer (74) and the tee assembly (LP60) (73) as follows:
F No. 1 And 1.5 Compartment Strainer and Tee Assembly (LP60) ** ON A/C NOT FOR ALL
   (1) Apply the P06-054compound, paste, anti-seize to the threads of the six bolts (75).
     (a) For the new or the refurbished bolts or the nuts with the baked-on lubricant, do not do the wet application.
   (2) Apply the P03-001lubricant, aircraft turbine engine (synthetic base) to a new EIPC 79-21-49-02-100 PACKING (72).
   (3) Install the packing (72) to the tube (LP63).
   (4) Install the strainer (74) to the tee assembly (LP60) (73).
   (5) If necessary, apply the P05-395beeswax (was: P06-015) or the paraffin wax blend (Material No.P05-396) to the seal (71).
   (6) Install the seal (71) and the tee assembly (LP60) (73) to the oil manifold and the tube (LP61) with the six bolts (75) finger-tight.
   (7) Connect the tee assembly (LP60) (73) B-nut to the tube (LP63).
   (8) TORQUE the six bolts (75) to between 90 and 80 lbf.in (1.02 and 0.90 m.daN ) T.
   (9) TORQUE the tee assembly (LP60) (73) B-nut to between 525 and 475 lbf.in (5.93 and 5.37 m.daN ) T.

POST SB C-72-00-0077A
   (10) Install the strainer to the lubrication and the scavenge oil pump, if necessary (Ref. AMM TASK 79-21-01-400-801).

END OF POST SB C-72-00-0077A

   (11) Install the fan exit liner segments (Ref. AMM TASK 72-21-08-400-801).
   (12) Fill the engine with oil (Ref. AMM TASK 79-00-00-610-801).
   (13) Examine the assembly for the foreign objects, damage and correct assembly.
5. Close-up
Subtask 79-21-18-410-050-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 thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
Subtask 79-21-18-440-050-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 79-21-18-410-051-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 access platform(s).
   (3) Remove the WARNING NOTICE(S).
Subtask 79-21-18-720-050-A ** ON A/C NOT FOR ALL
D. Test(s)
   (1) Do the Test No. 3 - Idle Power Test (Ref. AMM TASK 71-00-00-720-811).
[Rev.10 from 2021] 2026.04.01 03:41:54 UTC
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