DOC AIRBUS | AMM A320FReplacement of a Sealol Seal (Fuel Pump and Hydraulic Pump Drive Pads) [CFMB]
TASK 72-63-00-300-802-A
Replacement of a Sealol Seal (Fuel Pump and Hydraulic Pump Drive Pads)
1. Reason for the Job
To replace a leaky sealol seal assembly by an other sealol seal assembly at:
If, as a replacement, you install a magnetic seal on the hydraulic pump and/or the fuel pump drive pad, make sure you install the correct type of magnetic seal (the one without the thrust ring added). Then, refer to the related installation paragraph.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 72-63-00-941-064-A ** ON A/C NOT FOR ALL
Subtask 72-63-00-020-070-A ** ON A/C NOT FOR ALL
Subtask 72-63-00-942-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:43:54 UTC
Replacement of a Sealol Seal (Fuel Pump and Hydraulic Pump Drive Pads)
1. Reason for the Job
To replace a leaky sealol seal assembly by an other sealol seal assembly at:
- The hydraulic pump drive pad
- The fuel pump drive pad.
NOTE: You can find two types of carbon seal installed on these Accessory Gearbox (AGB) drive pads: a sealol seal assembly or a magnetic seal assembly. You can replace a sealol seal assembly either, by a new sealol seal assembly or, as an alternate, by a new magnetic seal assembly.
If you replace a sealol seal by a magnetic seal, remove the sealol seal as specified in this procedure. If, as a replacement, you install a magnetic seal on the hydraulic pump and/or the fuel pump drive pad, make sure you install the correct type of magnetic seal (the one without the thrust ring added). Then, refer to the related installation paragraph.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | CONTAINER - STORAGE |
| No specific | 1 | HAMMER - SLIDE |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 60 and 55 lbf.in (0.68 and 0.62 m.daN )  | |
| 856A1130 | 1 | TOOL SET - JACK SCREW |
| 856A3576 | 1 | SEALOL AND MAGNETIC SEALS-R/I |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP1039) | acetone |
| (Material No.CP1041) | isopropyl alcohol |
| (Material No.CP2011) | stoddard solvent |
| (Material No.CP2101) | graphite grease |
| (Material No.CP2442) | engine oil |
| (Material No.CP2559) | ardrox 552 |
| (Material No.CP2560) | turco ind 79 |
| (Material No.CP2566) | mag-chem teksol |
| (Material No.CP2584) | degreasol 99 R |
| (Material No.CP2656) | mag-chem skysol |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 30 | O-RING | AIPC 72-63-00-02-025 |
| 10 | O-RING | AIPC 72-63-00-02-080 |
| 30 | O-RING | AIPC 72-63-00-05-120 |
| 10 | O-RING | AIPC 72-63-00-05-180 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 29-11-51-000-041-A | Removal of the Green Engine Pump |
| TASK 29-11-51-400-041-A | Installation of the Green Engine Pump |
| TASK 71-00-00-790-002-B | Fuel or Hydraulic or Oil Leakage Limits |
| TASK 71-00-00-790-006-A | Leak Check after the Replacement of a Sealol Seal or a Magnetic Seal on the AGB Drive Pads of the IDG, Hydraulic Pump, Starter and Fuel Pump |
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-B | Closing of the Fan Cowl Doors |
| TASK 73-11-10-000-003-A | Removal of the Fuel Pump and Filter Assembly |
| TASK 73-11-10-400-003-A | Installation of the Fuel Pump and Filter Assembly |
Accessory Gearbox AssemblySubtask 72-63-00-941-064-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 72-63-00-010-076-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 72-63-00-020-070-A ** ON A/C NOT FOR ALL
A. Preparation for the Removal of the Sealol Seal Assembly
(1) Depending on the drive pad on which you have to replace the sealol seal assembly, remove one of these units:
Subtask 72-63-00-020-071-A ** ON A/C NOT FOR ALL (1) Depending on the drive pad on which you have to replace the sealol seal assembly, remove one of these units:
- Fuel pump (Ref. AMM TASK 73-11-10-000-003)
- Hydraulic pump (Ref. AMM TASK 29-11-51-000-041).
B. Removal of the Sealol Seal Housing Assembly
(1) Remove the three nuts (60) and washers (50) which attach the sealol seal housing assembly (40) to the drive pad.
(2) Remove the sealol seal housing assembly (40) with the jackscrews P12 from the 856A1130 TOOL SET - JACK SCREW (856A1130G06). Remove and discard the O-ring (30).
(3) Put the removed parts (60), (50) and (40) in the CONTAINER - STORAGE.
Subtask 72-63-00-020-072-A ** ON A/C NOT FOR ALL (1) Remove the three nuts (60) and washers (50) which attach the sealol seal housing assembly (40) to the drive pad.
(2) Remove the sealol seal housing assembly (40) with the jackscrews P12 from the 856A1130 TOOL SET - JACK SCREW (856A1130G06). Remove and discard the O-ring (30).
(3) Put the removed parts (60), (50) and (40) in the CONTAINER - STORAGE.
C. Removal of the Rotating Mating Ring Assembly
(1) Depending on the drive pad from which you remove the rotating mating ring assembly, get the applicable tool diameter configuration from the tool set, 856A3576 SEALOL AND MAGNETIC SEALS-R/I (856A3576G01).
Manually give the tool one or two pulls to make sure it is correctly installed. If so, it must not come out.
(5) Install the HAMMER - SLIDE on top of the tool. Operate the slide hammer and remove the rotating mating ring assembly from the gearshaft.
(6) Remove the O-ring (10) from the inner diameter groove of the rotating mating ring (20). Discard the O-ring (10).
(7) Loosen the items:
Subtask 72-63-00-020-073-A ** ON A/C NOT FOR ALL (1) Depending on the drive pad from which you remove the rotating mating ring assembly, get the applicable tool diameter configuration from the tool set, 856A3576 SEALOL AND MAGNETIC SEALS-R/I (856A3576G01).
- For the fuel pump and hydraulic pump drive pads, use the smaller diameter tool with the items P09, P10 and P11.
- P11 and P05 (smaller diameter tool).
- P09 (smaller diameter tool)
comes against the polished face of the rotating mating ring.
Manually give the tool one or two pulls to make sure it is correctly installed. If so, it must not come out.
(5) Install the HAMMER - SLIDE on top of the tool. Operate the slide hammer and remove the rotating mating ring assembly from the gearshaft.
(6) Remove the O-ring (10) from the inner diameter groove of the rotating mating ring (20). Discard the O-ring (10).
(7) Loosen the items:
- P11 and P05 (smaller diameter tool)
and remove the rotating mating ring (20) from tool (856A3576G01). Put the mating ring (20) in the storage box.
D. Disposal of the Removed Sealol Seal Components
(1) Tag the removed parts (40) and (20) to indicate they come from the same matched assembly.
(2) Put the removed parts in a storage box and send them to the repair shop.
Subtask 72-63-00-420-065-A ** ON A/C NOT FOR ALL (1) Tag the removed parts (40) and (20) to indicate they come from the same matched assembly.
(2) Put the removed parts in a storage box and send them to the repair shop.
E. Preparation for the Installation of the Sealol Seal Assembly
(1) Get a new sealol seal assembly corresponding to the diameter of the drive pad on which you do the replacement.
(2) Clean the gearshaft area.
(3) Lubricate the same gearshaft area with engine oil (Material No.CP2442) .
Subtask 72-63-00-420-066-A ** ON A/C NOT FOR ALL (1) Get a new sealol seal assembly corresponding to the diameter of the drive pad on which you do the replacement.
(2) Clean the gearshaft area.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Clean the gearshaft area to come in contact with the new rotating mating ring (20) with acetone (Material No.CP1039) or isopropyl alcohol (Material No.CP1041) or stoddard solvent (Material No.CP2011) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) . (3) Lubricate the same gearshaft area with engine oil (Material No.CP2442) .
F. Installation of the Rotating Mating Ring Assembly
(3) Put the new mating ring (20) on the applicable tool, (856A3576G01), as follows:
(5) Turn the tool clockwise then counterclockwise to make sure that the lugs of the rotating mating ring are correctly engaged in the slots of the bearing (inner race).
(6) Loosen the items P11 and P05 and remove the tool.
(7) Lubricate the polished face of the rotating mating ring (20) with engine oil (Material No.CP2442) .
Subtask 72-63-00-420-067-A ** ON A/C NOT FOR ALL CAUTION:
USE CLEAN COTTON GLOVES WHEN YOU HANDLE THE COMPONENTS OF A SEALOL SEAL ASSEMBLY TO PREVENT CONTAMINATION.
AT INSTALLATION, MAKE SURE THAT THE FACE OF THE ROTATING MATING RING WHICH TOUCHES THE CARBON RING IS THE POLISHED SURFACE.
(1) Remove the new rotating mating ring (20) from its packaging. Apply a thin layer of engine oil (Material No.CP2442) to the following new O-rings: - AIPC 72-63-00-05-180 O-RING (10) for the fuel pump pad,
- AIPC 72-63-00-02-080 O-RING (10) for the hydraulic pump pad.
Install the O-ring (10) in the inner diameter groove of the rotating ring (20).
(3) Put the new mating ring (20) on the applicable tool, (856A3576G01), as follows:
- Loosen the items P11 and P05 (smaller diameter tool).
- Put the new mating ring (20) on the tool, its polished face in contact with the nylon/viton end of item P09 (smaller diameter tool).
- Tighten the item P05 by hand until the rotating mating ring (20) is held tightly in the collet of item P09.
(5) Turn the tool clockwise then counterclockwise to make sure that the lugs of the rotating mating ring are correctly engaged in the slots of the bearing (inner race).
(6) Loosen the items P11 and P05 and remove the tool.
(7) Lubricate the polished face of the rotating mating ring (20) with engine oil (Material No.CP2442) .
G. Installation of the Sealol Seal Housing Assembly
(2) Manually engage the sealol seal housing assembly (40) in the bore of the pad until the O-ring (30) is fully against the entrance of the bore.
(3) Apply a thin layer of graphite grease (Material No.CP2101) to the three studs of the pad.
(4) Install the three washers (50) on the three studs. Engage the three nuts (60) on the studs and tighten continuously the nuts, each in small increments, until the flange of the housing assembly comes in contact with its mating face on the pad.
(5) TORQUE the nuts (60) to between 60 and 55 lbf.in (0.68 and 0.62 m.daN ).
(6) Depending on the drive pad on which you have replaced the sealol seal assembly, install one of these units:
Subtask 72-63-00-410-071-A ** ON A/C NOT FOR ALL CAUTION:
AT INSTALLATION, MAKE SURE THAT PARTICLES, EVEN OF EXTREMELY SMALL SIZE, ARE NOT LEFT BETWEEN THE POLISHED FACE OF THE ROTATING MATING RING AND THE CARBON RING FACE OF THE SEALOL SEAL HOUSING ASSEMBLY. OTHERWISE, LEAKS WILL OCCUR.
CAUTION:
USE CLEAN COTTON GLOVES TO HANDLE THE SEALOL SEAL HOUSING ASSEMBLY.
CAUTION:
THE INSTALLATION OF THE SEALOL SEAL HOUSING (40) MUST BE DONE BY HAND AND WITHOUT SHOCKS TO PREVENT DAMAGE TO THE CARBON RING.
(1) Lubricate a new AIPC 72-63-00-02-025 O-RING (30) for the hydraulic pump drive pad or AIPC 72-63-00-05-120 O-RING (30) for the fuel pump drive pad with engine oil (Material No.CP2442) and install in the outer diameter groove of the sealol assembly (40). (2) Manually engage the sealol seal housing assembly (40) in the bore of the pad until the O-ring (30) is fully against the entrance of the bore.
(3) Apply a thin layer of graphite grease (Material No.CP2101) to the three studs of the pad.
(4) Install the three washers (50) on the three studs. Engage the three nuts (60) on the studs and tighten continuously the nuts, each in small increments, until the flange of the housing assembly comes in contact with its mating face on the pad.
(5) TORQUE the nuts (60) to between 60 and 55 lbf.in (0.68 and 0.62 m.daN )
. (6) Depending on the drive pad on which you have replaced the sealol seal assembly, install one of these units:
- Fuel pump (Ref. AMM TASK 73-11-10-400-003)
- Hydraulic pump (Ref. AMM TASK 29-11-51-400-041).
H. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
Subtask 72-63-00-710-059-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
I. Do a leak check of the replacement seal (Ref. AMM TASK 71-00-00-790-006). If there are leaks (Ref. AMM TASK 71-00-00-790-002).
5. Close-upSubtask 72-63-00-942-053-A ** ON A/C NOT FOR ALL
A. Remove the WARNING NOTICE(S).