W DOC AIRBUS | AMM A320F

Installation of the Scavenge Oil Pump [IAE]

TASK 79-22-41-400-010-A
Installation of the Scavenge Oil Pump

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.
CAUTION: THE NEW TURBINE INNER STAGE 6 AIR SEAL PART THAT WAS RELEASED BY SERVICE BULLETINS 72-0626 & SB 72-0567 REQUIRES POST SB 79-0093 OIL SCAVENGE PUMP. THEREFORE, BEFORE INSTALLING THE OIL SCAVENGE PUMP, FIND OUT THE CONFIGURATION OF THE TURBINE INNER STAGE 6 AIR SEAL. THIS CAN BE DONE BY CHECKING LPT MODULE PART NUMBER LOCATED ON THE LPT CASE. IF LPT MODULE PART NUMBER IS FOUND TO BE 4W5224 (OR) 4W5225 (OR) 4W5527 (OR) 4W5222, THEN THE OIL SCAVENGE PUMP MUST BE REPLACED WITH POST SB 79-0093 PUMP. IF THIS REQUIREMENT IS NOT COMPLIED WITH, PRE SB 79-0093 SCAVENGE PUMP WILL NOT SCAVENGE OIL AT THE DESIGNED FLOW RATE FROM THE NO.5 BEARING COMPARTMENT AND COULD RESULT IN A POTENTIAL ENGINE TAIL PIPE FIRE OR SMOKE.
ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ) T
No specific
Torque wrench: range to between 95 and 85 lbf.in (1.07 and 0.96 m.daN ) T
No specific
Torque wrench: range to between 110 and 90 lbf.in (1.24 and 1.02 m.daN ) T
No specific
Torque wrench: range to between 200 and 180 lbf.in (2.26 and 2.03 m.daN ) T
No specific
Torque wrench: range to between 441 and 399 lbf.in (4.98 and 4.51 m.daN ) T
IAE1R18001
1
WRENCH
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.V02-126)
lockwire
(Material No.V10-077)
lubricant (engine oil)
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
47
NUTS
AIPC 72-60-21-80-055
46
WASHERS
AIPC 72-60-21-80-060
44
PACKING
AIPC 72-60-21-80-080
37
PACKING
AIPC 79-22-41-80-030
24
PACKING
AIPC 79-22-41-80-050
31
PACKING
AIPC 79-22-41-80-090
32
PACKING
AIPC 79-22-41-80-100
25
PACKING
AIPC 79-22-41-80-140
43
PACKINGS
AIPC 79-22-41-80-190
41
PACKINGS
AIPC 79-22-41-80-200
17
PACKING
AIPC 79-22-41-80-250
16
PACKING
AIPC 79-22-49-82-230
4
SEALING RING
AIPC 79-22-49-86-020
1
RING
AIPC 79-22-49-86-080
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 12-13-79-610-011-A
Check Oil Level and Replenish
TASK 70-23-11-911-013-A
General Torque Tightening Techniques
TASK 70-23-13-911-010-A
Procedures for the Installation of Preformed Packings
TASK 70-40-11-911-014-A
Locking Devices General Information
TASK 71-00-00-710-012-B
Test No.3 : Idle Leak Check
TASK 71-00-00-710-045-A
Test No.1 : Dry Motor Leak Check
TASK 71-13-00-010-010-A
Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A
Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 79-22-43-400-010-A
Installation of the Scavenge Oil Filter Assembly
TASK 79-22-45-400-010-A
Installation of the Magnetic Chip Detector
TASK 79-22-45-400-011-A
Installation of the Magnetic Chip Detector Housing
F Crank Cover
F Scavenge Oil Pump and Scavenge Oil Tubes
F Scavenge Oil Tube
F Scavenge Oil Tubes on the Scavenge Oil Pump
3. Job Set-up
Subtask 79-22-41-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
   (2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
Subtask 79-22-41-010-055-A ** ON A/C NOT FOR ALL
B. Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-010)
   (1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
   (2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 79-22-41-010-054-A ** ON A/C NOT FOR ALL
C. Remove the crank cover from the gearbox casing
F Crank Cover ** ON A/C NOT FOR ALL
   (1) Remove all of the applicable covers/caps/plugs from the openings.
   (2) Remove the two nuts (47) and the two washers (46) that attach the cover (45) to the gearbox casing.
   (3) Remove the crank cover (45).
   (4) Remove and discard the packing (44).
Subtask 79-22-41-820-050-A ** ON A/C NOT FOR ALL
D. Align the scavenge oil pump and the gearbox drives
   (1) Install the scavenge oil pump without the packing. Make sure that the pump drive gear engages correctly with the scavenge oil pump drive gear in the gearbox.
NOTE: Turn the gearbox gear train with the wrench. This helps to engage the pump drive gear with the pump drive gear in the gearbox.
   (2) Turn the wrench down to the vertical position. Do not remove the wrench.
NOTE: The position of the wrench will show if the engine/gearbox gear train rotation occurred after removal of the pump.
CAUTION: DO NOT TURN THE ENGINE/GEARBOX GEAR TRAIN/SCAVENGE PUMP DRIVE GEAR, TO AVOID DAMAGE TO THE PUMP/GEARBOX DURING REINSTALLATION OF THE PUMP.
CAUTION: DO NOT TURN THE ENGINE/GEARBOX GEAR TRAIN/SCAVENGE PUMP DRIVE GEAR, TO AVOID DAMAGE TO THE PUMP/GEARBOX DURING REINSTALLATION OF THE PUMP.
   (3) Remove the scavenge oil pump
NOTE: If any rotation occurs repeat the above steps.
4. Procedure
Subtask 79-22-41-410-050-A ** ON A/C NOT FOR ALL
A. Install the suction strainer
F Scavenge Oil Pump and Scavenge Oil Tubes ** ON A/C NOT FOR ALL
   (1) Install two new AIPC 79-22-41-80-200 PACKINGS (41) (Ref. AMM TASK 70-23-13-911-010) on the two grooves on the suction strainer (42)
   (2) Apply V10-077lubricant (engine oil) to the strainer seat on the gearbox casing.
   (3) Install the strainer (42) in to the seat on the gearbox casing.
Subtask 79-22-41-410-051-A ** ON A/C NOT FOR ALL
B. Install the two scavenge oil tubes (30) and (36) to the scavenge oil pump (38)
F Scavenge Oil Pump and Scavenge Oil Tubes ** ON A/C NOT FOR ALL
   (1) Install the scavenge oil tube (36) to the scavenge oil pump (38).
     (a) Make sure that the collar is correctly installed on the tube.
     (b) Install two new AIPC 79-22-41-80-050 PACKING (24) and AIPC 79-22-41-80-030 PACKING (37) (Ref. AMM TASK 70-23-13-911-010) to the flange of the tube (36).
     (c) Apply V10-077lubricant (engine oil) to the tube seat on the scavenge oil pump.
     (d) Put the shouldered end of the tube (36) in to the seat on the scavenge oil pump.
     (e) Make sure that the shoulder of the tube connects correctly with the spot-facing of the collar.
     (f) Attach the tube (36) to the pump with the three bolts (34) and the three washers (35).
     (g) Tighten the bolts (34) with your hand.
     (h) Put the tube in to position for installation to the gearbox.
   (2) Install the scavenge oil tube (30) to the scavenge oil pump (38).

PRE SBE 79-0056

     (a) Make sure that the collar is correctly installed on the tube.
     (b) Install the new AIPC 79-22-41-80-100 PACKING (32) (Ref. AMM TASK 70-23-13-911-010) to the adapter (33).
     (c) Install the new AIPC 79-22-41-80-090 PACKING (31) and AIPC 79-22-41-80-140 PACKING (25) (Ref. AMM TASK 70-23-13-911-010) to the two ends of the tube (30).
     (d) Apply V10-077lubricant (engine oil) to the tube seat on the scavenge oil pump.
     (e) Put the shouldered end of the tube (30) in to the seat on the scavenge oil pump.
     (f) Make sure that the shoulder of the tube connects correctly with the spot-facing of the collar.
     (g) Attach the tube (30) to the pump with the three washers (26) and the three bolts (27).
     (h) Tighten the bolts (27) with your hand.
     (i) Put the tube in to position for installation to the gearbox.

SBE 79-0056

     (j) Install the new AIPC 79-22-41-80-100 PACKING (32) (Ref. AMM TASK 70-23-13-911-010) to the adapter (33).
     (k) Install the new AIPC 79-22-41-80-090 PACKING (31) and AIPC 79-22-41-80-140 PACKING (25) (Ref. AMM TASK 70-23-13-911-010) to the two ends of the tube (30).
     (l) Apply V10-077lubricant (engine oil) to the tube seat on the scavenge oil pump.
     (m) Put the shouldered end of the tube (30) in to the seat on the scavenge oil pump.
     (n) Attach the tube (30) to the pump with the three washers (26) and the three bolts (27).
     (o) Tighten the bolts (27) with your hand.
     (p) Put the tube in to position for installation to the gearbox.
Subtask 79-22-41-420-050-A ** ON A/C NOT FOR ALL
C. Install the scavenge oil pump (38)
F Scavenge Oil Pump and Scavenge Oil Tubes ** ON A/C NOT FOR ALL
WARNING: BE CAREFUL DURING THE REMOVAL OR INSTALLATION OF THE SCAVENGE OIL PUMP. IT WEIGHS APPROXIMATELY 12.22 LBS (5,544 KG). IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Install the two new AIPC 79-22-41-80-190 PACKINGS (43) (Ref. AMM TASK 70-23-13-911-010) on the scavenge pump flange.
   (2) Apply V10-077lubricant (engine oil) to the seats of the scavenge pump and the tube (36) on the angle gearbox support.
   (3) Install the scavenge oil pump (38) to the angle gearbox support (22).
   (4) Align the holes in the flange with the studs and align the suction strainer with the seat on the scavenge oil pump.
   (5) Put the tube (36) in to the seat on the gearbox casing.
   (6) Align the tube (30) with the seat on the angle gearbox (23).
   (7) Make sure that the drive gear on the pump engages correctly with the scavenge oil pump gear drive on the gearbox and then push the pump in to position.
   (8) Attach the pump to the angle gearbox support with the four washers (40) and the four nuts (39).
   (9) TORQUE the nuts (39) to between 200 and 180 lbf.in (2.26 and 2.03 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
Subtask 79-22-41-420-052-A ** ON A/C NOT FOR ALL
D. Connect the adapter (33) to the angle gearbox (23)
F Scavenge Oil Pump and Scavenge Oil Tubes ** ON A/C NOT FOR ALL
   (1) Make sure the tube (30) is correctly aligned with the seat on the angle gearbox (23).
   (2) Move the adapter (33) in to the seat on the angle gearbox.
   (3) Align the holes in the adapter flange with the studs on the angle gearbox.

PRE SB 70-0950
   (4) Attach the adapter (33) to the angle gearbox with the two washers (29) and the two nuts (28).

END OF PRE SB 70-0950


POST SB 70-0950
   (5) Attach the adapter (33) to the angle gearbox with the two washers (29) and the two bolts (28).

END OF POST SB 70-0950
   (6) TORQUE the fasteners (28) to between 95 and 85 lbf.in (1.07 and 0.96 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
Subtask 79-22-41-420-053-A ** ON A/C NOT FOR ALL
E. Safety the two scavenge oil tubes (30) and (36) to the scavenge oil pump (38)
F Scavenge Oil Pump and Scavenge Oil Tubes ** ON A/C NOT FOR ALL
   (1) TORQUE the bolts (27) on the tube (30) to between 95 and 85 lbf.in (1.07 and 0.96 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (2) TORQUE the bolts (34) on the tube (36) to between 95 and 85 lbf.in (1.07 and 0.96 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
Subtask 79-22-41-420-051-A ** ON A/C NOT FOR ALL
F. Install the scavenge oil tube (14) to the scavenge oil pump (38)
F Scavenge Oil Tube ** ON A/C NOT FOR ALL

PRE SBE 79-0056

   (1) Install a new AIPC 79-22-49-82-230 PACKING (16) (Ref. AMM TASK 70-23-13-911-010) to the flange of the tube (14).
   (2) Put the tube (14) in position above the angle gearbox support (22).
   (3) Install the tube (14) on the scavenge oil pump.
   (4) Attach the tube (14) to the scavenge oil pump with the three bolts (15).
   (5) TORQUE the bolts (15) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (6) Put the clip (10) on the tube (14).
   (7) Attach the clip (10) to the bracket (11) with the bolt (8), the washer (9), the spacer (13) and the clipnut (12).
   (8) TORQUE the bolt (8) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (9) Connect the tube (14) to the tube (7).
   (10) TORQUE the connector to between 441 and 399 lbf.in (4.98 and 4.51 m.daN ) T (Ref. AMM TASK 70-23-11-911-013). Use the IAE1R18001 WRENCH.
   (11) Safety the connector with the lockwire (Material No.V02-126) (Ref. AMM TASK 70-40-11-911-014).

SBE 79-0056

   (12) Install a new AIPC 79-22-49-82-230 PACKING (16) (Ref. AMM TASK 70-23-13-911-010) to the flange of the tube (14).
   (13) Put the tube (14) in position below the angle gearbox support (22).
   (14) Install the tube (14) on the scavenge oil pump.
   (15) Attach the tube (14) to the scavenge oil pump with the three bolts (15).
   (16) TORQUE the bolts (15) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (17) Put the clip (52) on the tube (14).
   (18) Attach the clip (52) to the bracket (55) with the bolt (51), the spacer (53), and the nut (54).
   (19) TORQUE the nut (54) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (20) Put the clip (10) on the tube (14).
   (21) Attach the clip (10) to the bracket (11) with the bolt (8) and the nut (50).
   (22) TORQUE the nut (50) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (23) Connect the tube (14) to the tube (7).
   (24) TORQUE the connector to between 441 and 399 lbf.in (4.98 and 4.51 m.daN ) T (Ref. AMM TASK 70-23-11-911-013). Use the IAE1R18001 WRENCH.
   (25) Safety the connector with the lockwire (Material No.V02-126) (Ref. AMM TASK 70-40-11-911-014).
Subtask 79-22-41-420-054-A ** ON A/C NOT FOR ALL
G. Install the two scavenge oil tubes (2) and (18) to the scavenge oil pump (38)
F Scavenge Oil Tubes on the Scavenge Oil Pump ** ON A/C NOT FOR ALL
   (1) Install the scavenge oil tube (2) to the scavenge oil pump (38).
     (a) Install a new AIPC 79-22-49-86-080 RING (1) and a new AIPC 79-22-49-86-020 SEALING RING (4) (Ref. AMM TASK 70-23-13-911-010) to the flange of the tube (2).
     (b) Install the tube (2) between the scavenge oil pump and the LP compressor/intermediate case.
     (c) Install the three bolts (19) which attach the tube (2) to the scavenge oil pump.
     (d) TORQUE the bolts (19) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
     (e) Install the three bolts (3) which attach the tube (2) to the LP compressor/intermediate case.
     (f) TORQUE the bolts (3) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
   (2) Install the scavenge oil tube (18) to the scavenge oil pump (38).
     (a) Install a new AIPC 79-22-41-80-250 PACKING (17) (Ref. AMM TASK 70-23-13-911-010) to the flange of the tube (18).
     (b) Install the tube (18) on the flange of the scavenge oil pump.
     (c) Install the three washers (6) and the bolts (5) which attach the tube (18) to the scavenge oil pump.
     (d) TORQUE the three bolts (5) to between 95 and 85 lbf.in (1.07 and 0.96 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
Subtask 79-22-41-410-052-A ** ON A/C NOT FOR ALL
H. Install the scavenge oil filter housing (Ref. AMM TASK 79-22-43-400-010).
Subtask 79-22-41-410-053-A ** ON A/C NOT FOR ALL
I. Install the crank cover
F Crank Cover ** ON A/C NOT FOR ALL
   (1) Install a new AIPC 72-60-21-80-080 PACKING (44) (Ref. AMM TASK 70-23-13-911-010) to the flange of the cover (45).
   (2) Apply V10-077lubricant (engine oil) to the crank cover seat on the gearbox casing.
   (3) Install the crank cover (45) to the gearbox and align with the studs.
   (4) Attach the crank cover (45) to the gearbox with the two AIPC 72-60-21-80-060 WASHERS (46) and the two AIPC 72-60-21-80-055 NUTS (47)
   (5) TORQUE the nuts (47) to between 95 and 85 lbf.in (1.07 and 0.96 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
Subtask 79-22-41-410-055-A ** ON A/C NOT FOR ALL
J. Install the magnetic chip detector
   (1) Install the magnetic chip detector housing (Ref. AMM TASK 79-22-45-400-011).
   (2) Install the magnetic chip detector (Ref. AMM TASK 79-22-45-400-010).
Subtask 79-22-41-612-050-A ** ON A/C NOT FOR ALL
K. Fill the oil system (Ref. AMM TASK 12-13-79-610-011).
5. Close-up
Subtask 79-22-41-410-054-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 fan cowls (Ref. AMM TASK 71-13-00-410-010):
     (a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
     (b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
   (3) Remove the WARNING NOTICE(S).
Subtask 79-22-41-790-050-B ** ON A/C NOT FOR ALL
B. Do an idle leak check (Ref. AMM TASK 71-00-00-710-012) or do a dry motor leak (Ref. AMM TASK 71-00-00-710-045).
[Rev.10 from 2021] 2026.04.01 03:40:28 UTC
"Aviabrain" 2025