Replacement of a Sealol Seal (IDG and Starter Drive Pads) [CFMB]

TASK 72-63-00-300-002-A
Replacement of a Sealol Seal (IDG and Starter Drive Pads)

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

1. Reason for the Job
To replace a leaky sealol seal assembly by an other sealol seal assembly at:

The Integrated Drive Generator (IDG) drive pad
The starter 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 IDG and/or starter drive pad, make sure you install the correct type of magnetic seal (the one equipped with a thrust ring). Then, refer to the related installation paragraph.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CONTAINER - STORAGE
No specific	AR	HAMMER - SLIDE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 33 and 29 lbf.in (0.37 and 0.33 m.daN )
856A1130	1	TOOL SET - JACK SCREW
856A3576	1	SEALOL AND MAGNETIC SEALS-R/I

B. Consumable Materials

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

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
30	O-RING	AIPC 72-63-00-03-010
10	O-RING	AIPC 72-63-00-03-080
15	BAL SEAL	AIPC 72-63-00-03-080
30	O-RING	AIPC 72-63-00-06-060
10	O-RING	AIPC 72-63-00-06-120
15	BAL SEAL	AIPC 72-63-00-06-120

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-21-51-000-040-B	Removal of the Integrated Drive Generator - IDG 1(2)
TASK 24-21-51-400-040-E	Installation of the Integrated Drive Generator (IDG) 1(2) (New EPGS)
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 80-11-10-000-002-A	Removal of the Pneumatic Starter
TASK 80-11-10-400-002-A	Installation of the Pneumatic Starter
Sealol Seal Assembly of the IDG Drive Pad
Removal/Installation of a Sealol Seal Rotating Mating Ring (Typical)
Accessory Gearbox Assembly
Sealol Seal Assembly
Sealol Seal Assembly of the Starter Drive Pad

3. Job Set-up
Subtask 72-63-00-941-058-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 5 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 72-63-00-010-065-A ** ON A/C NOT FOR ALL

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
Subtask 72-63-00-020-058-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:

IDG (Ref. AMM TASK 24-21-51-000-040)
starter (Ref. AMM TASK 80-11-10-000-002).

Subtask 72-63-00-020-059-A ** ON A/C NOT FOR ALL

B. Removal of the Sealol Seal Housing Assembly
(1) Remove the 3 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 O-ring (30).
(3) Put the removed parts (60), (50) and (40) in the CONTAINER - STORAGE.

Subtask 72-63-00-020-060-A ** ON A/C NOT FOR ALL

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).

for the starter and IDG drive pads, use the larger diameter tool with the items P02, P03 and P06.

(2) Loosen the tool items:

P06 and P05 (larger diameter tool).

(3) Engage the tool on the gearshaft until the nylon/viton-end of item:

P02 (larger diameter tool)
comes against the polished face of the rotating mating ring.

(4) Tighten the item P05 by hand until you feel the jaws of the collet are tightly engaged under the 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.

PRE SB CFM 72-105
(6) Remove the O-ring (10) from the inner diameter groove of the rotating mating ring (20). Discard the O-ring (10).

POST SB CFM 72-105
(7) Remove the bal seal (15) from the inner diameter groove of the rotating mating ring (20). Discard the bal seal (15).

END OF SB CFM 72-105

(8) Loosen the items:

P06 and P05 (larger diameter tool)
and remove the rotating mating ring (20) from tool (856A3576G01). Put the mating ring (20) in the storage box.

Subtask 72-63-00-020-061-A ** ON A/C NOT FOR ALL

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 72-63-00-420-059-A ** ON A/C NOT FOR ALL

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:

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) .

Subtask 72-63-00-420-060-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.

CAUTION: THERE ARE TWO CONFIGURATIONS OF SEALOL SEAL (SB CFM 72-105). THE O-RING OR BAL SEAL ARE MATCHED TO THEIR ROTATING RING. THEY ARE NOT INTERCHANGEABLE.

F. Installation of the Rotating Mating Ring Assembly

PRE SB CFM 72-105
(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 72-63-00-06-120 O-RING (10) for the starter pad,
AIPC 72-63-00-03-080 O-RING (10) for the IDG pad,
Install the O-ring (10) in the inner diameter groove of rotating ring (20).

POST SB CFM 72-105

(2) Installation of the new bal seal.

CAUTION: BE CAREFUL WHEN YOU INSTALL THE BAL SEAL (15) IN THE GROOVE OF SEALOL SEAL ROTATING RING (20) BECAUSE THE BAL SEAL IS EASILY DAMAGED.

CAUTION: MAKE SURE THAT THE OPENING OF THE BAL SEAL POINTS TOWARDS THE TABS OF THE SEALOL SEAL ROTATING RING. IF YOU DO NOT OBEY THIS INSTRUCTION, IMPORTANT OIL LEAKAGE CAN OCCUR.

(a) Remove the new rotating mating ring (20) from its packaging. Apply a thin layer of engine oil (Material No.CP2442) to the following new bal seal:

AIPC 72-63-00-06-120 BAL SEAL (15) for the starter pad,
AIPC 72-63-00-03-080 BAL SEAL (15) for the IDG pad,
Install the bal seal (15) in the inner diameter groove of rotating ring (20)

END OF SB CFM 72-105

(3) Depending on the diameter of the new rotating mating ring assembly you install, get the applicable tool diameter configuration from the 856A3576 SEALOL AND MAGNETIC SEALS-R/I (856A3576G01).
(4) Put the new mating ring (20) on the applicable tool (856A3576G01), as follows:

loosen the items P06 and P05 (larger diameter tool)
put the new mating ring (20) on the tool, its polished face in contact with the nylon/viton end of item P02 (larger diameter tool)
tighten the item P05 by hand until the rotating mating ring (20) is held tightly in the collet of item P02.

(5) Engage the tool and mating ring assembly on the gearshaft. Turn the tool with the handle until you feel the slots of the rotating mating ring (20) engage the lugs of the gearshaft bearing.
(6) 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).
(7) Loosen the items P06 and P05 and remove the tool.
(8) Lubricate the polished face of the rotating mating ring (20) with engine oil (Material No.CP2442) .

Subtask 72-63-00-420-061-A ** ON A/C NOT FOR ALL

G. Installation of the Sealol Seal Housing Assembly

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 72-63-00-03-010 O-RING (30) for the IDG drive pad or AIPC 72-63-00-06-060 O-RING (30) for the starter drive pad with engine oil (Material No.CP2442) and install in the outer diameter groove of the sealol seal housing 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 3 studs of the pad.
(4) Install the 3 washers (50) on the 3 studs. Engage the 3 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 33 and 29 lbf.in (0.37 and 0.33 m.daN )

.
(6) Depending on the drive pad on which you have replaced the sealol seal assembly, install one of these units:

IDG (Ref. AMM TASK 24-21-51-400-040)
starter (Ref. AMM TASK 80-11-10-400-002).

Subtask 72-63-00-410-061-A ** ON A/C NOT FOR ALL

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 72-63-00-710-054-A ** ON A/C NOT FOR ALL

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-up
Subtask 72-63-00-942-050-A ** ON A/C NOT FOR ALL

A. Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:43:50 UTC