Replacement of the Actuation Ring Flanged Bushing (Stages 1 and 2) [CFMB]

TASK 72-32-00-960-002-A
Replacement of the Actuation Ring Flanged Bushing (Stages 1 and 2)

1. Reason for the Job
To replace missing actuation ring bushings.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2267)	RTV 106

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
1	BUSHING	AIPC 72-32-00-02-080
1	BUSHING	AIPC 72-32-00-02-090
2	BUSHING	AIPC 72-32-00-02-100
2	BUSHING	AIPC 72-32-00-02-110

E. Referenced Information

REFERENCE	DESIGNATION
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 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
Replacement of the Stages 1 and 2 Actuation Ring Flanged Bushing

3. Job Set-up
Subtask 72-32-00-941-057-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 72-32-00-010-068-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.

Subtask 72-32-00-040-061-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 72-32-00-010-069-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser doors: (Ref. AMM TASK 78-36-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(a) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure

CAUTION: DO NOT REMOVE THE LEVER ARMS TO COMPLETE THIS REPAIR.

Subtask 72-32-00-420-055-A ** ON A/C NOT FOR ALL

A. Install the new actuation ring lever arm bushing
(1) If necessary, clean the pieces of old bushing from the ring.

NOTE: The new bushing cannot be inserted onto the lever arm with the legs attached.

NOTE: The actuation ring is assembled with different types of bushings. Be sure to select the correct bushing from the Illustrated Parts Catalog.

(2) Carefully, break the 4 'legs' off of the new bushing.
(3) Installation of the bushing

Replacement of the Stages 1 and 2 Actuation Ring Flanged Bushing ** ON A/C NOT FOR ALL

(a) For stage 1:
1 Install the new AIPC 72-32-00-02-080 BUSHING (1) or AIPC 72-32-00-02-090 BUSHING (1) from outboard side of the actuation ring.
(b) For stage 2:
1 Install the new AIPC 72-32-00-02-100 BUSHING (2) or AIPC 72-32-00-02-110 BUSHING (2) from outboard side of the actuation ring.

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

(4) Apply approximately 0.125 in. (3.18 mm) RTV 106 (Material No.CP2267) to the outer flange of the bushing.
(5) Permit the RTV 106 to cure for not less than 24 hours before you operate the engine.

5. Close-up
Subtask 72-32-00-410-064-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 doors: (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 72-32-00-440-057-A ** ON A/C NOT FOR ALL

B. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 72-32-00-410-065-A ** ON A/C NOT FOR ALL

C. Close Access
(1) 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
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:00:06 UTC