Installation of the Inlet Guide Vane (IGV) and Stage 3 Vane Lever Arms or Bushings [CFMB]

TASK 72-32-00-400-003-A
Installation of the Inlet Guide Vane (IGV) and Stage 3 Vane Lever Arms or Bushings

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	ACCESS PLATFORM 1M(3 FT)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
856A1012	1	LEVER,COUNTERTORQUE-CPRSR STATOR VANE ACTUATION ARM

B. 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

C. 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 Lever Arm and/or Vane Bushing
IGV and Stage 3 Lever Arm Engaged Correctly and Incorrectly

3. Job Set-up
Subtask 72-32-00-860-052-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) is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 72-32-00-010-064-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 72-32-00-040-058-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 72-32-00-420-052-A ** ON A/C NOT FOR ALL

A. Install the IGV and stage 3 lever arms.

CAUTION: CORRECTLY ALIGN THE WITNESS MARK ON THE VANE STEM WITH THE LEVER ARM. BLADE DAMAGE CAN OCCUR IF THE VANE STEM IS NOT CORRECTLY ALIGNED.

(1) Install the replacement bushing in the stator case.
(2) Install the replacement lever arms on the vane while you engage the lever arm pin into the actuation ring.
(3) Make sure the lever arm fully engages the vane stem flats.
(4) Install the washer and nut on the vane stem. Hold the lever arm with 856A1012 LEVER,COUNTERTORQUE-CPRSR STATOR VANE ACTUATION ARM (856A1012G01), while you tighten the nut.
(5) TORQUE the nut to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

. Do not let the vane turn.

Subtask 72-32-00-210-053-A ** ON A/C NOT FOR ALL

B. Do a visual check.
(1) The lever arm must fully engage the vane stem flats.

Replacement of Lever Arm and/or Vane Bushing ** ON A/C NOT FOR ALL

(2) A minimum of 2 vane stem threads must be above the nut.

IGV and Stage 3 Lever Arm Engaged Correctly and Incorrectly ** ON A/C NOT FOR ALL

5. Close-up
Subtask 72-32-00-410-058-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 72-32-00-440-054-A ** ON A/C NOT FOR ALL

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

Subtask 72-32-00-410-059-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 02:42:24 UTC