Reconditioning of Lubricant Coating on the Fan Blade Shim [CFMI]

TASK 72-21-00-320-008-A
Reconditioning of Lubricant Coating on the Fan Blade Shim

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)-ADJUSTABLE
No specific	AR	BRUSH - BRISTLED
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1039)	acetone
(Material No.CP2208)	fiberglass adhesive tape
(Material No.CP2229)	Molydag 254 (dry film lubricant)
(Material No.CP2240)	scotch-brite type A CFS
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 72-21-00-000-003-A	Removal of the Fan Rotor Blades
TASK 72-21-00-400-003-A	Installation of the Fan Rotor Blades
SPM 704111
SPM 706311
Reconditioning of Lubricant Coating

3. Job Set-up
Subtask 72-21-00-941-090-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) in position 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) in position to tell persons not to energize the FADEC 1(2).
(4) Put an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position.

4. Procedure
Subtask 72-21-00-020-080-A ** ON A/C NOT FOR ALL

A. Remove the damaged fan blade shims, as necessary (Ref. AMM TASK 72-21-00-000-003).

Subtask 72-21-00-110-057-A ** ON A/C NOT FOR ALL

B. Removal of Grease from the Shim

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

(1) Remove grease from the shim with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with acetone (Material No.CP1039) .

Subtask 72-21-00-320-054-A ** ON A/C NOT FOR ALL

C. Removal of the Old Lubricant Coating
(1) Remove old lubricant coating on areas A and B with scotch-brite type A CFS (Material No.CP2240) SPM 704111.

NOTE: Use scotch-brite type A CFS (Material No.CP2240) under tap water. Change the scotch brite frequently.

Subtask 72-21-00-350-052-A ** ON A/C NOT FOR ALL

D. Mask the areas you do not coat with fiberglass adhesive tape (Material No.CP2208) .

Subtask 72-21-00-640-053-A ** ON A/C NOT FOR ALL

E. Apply CP2229Molydag 254 (dry film lubricant) on the areas to be coated SPM 706311.
(1) It is recommended to apply CP2229Molydag 254 (dry film lubricant) with a BRUSH - BRISTLED.
(2) You must apply two coats maximum.
(3) Overcoating is permitted in the radius areas.

Subtask 72-21-00-350-053-A ** ON A/C NOT FOR ALL

F. Remove the fiberglass adhesive tape (Material No.CP2208) .

Subtask 72-21-00-220-057-A ** ON A/C NOT FOR ALL

G. Make Sure that the CP2229Molydag 254 (dry film lubricant) application is correct SPM 706311.
(1) The thickness of CP2229Molydag 254 (dry film lubricant) must be in the limits of 0.0006 to 0.0014 in. (0.015 - 0.035 mm).

Subtask 72-21-00-420-086-A ** ON A/C NOT FOR ALL

H. Install the applicable fan blade shims (Ref. AMM TASK 72-21-00-400-003).

5. Close-up
Subtask 72-21-00-869-082-A ** ON A/C NOT FOR ALL

A. Make sure that the work area is clean and clear of tools and other items.

Subtask 72-21-00-942-081-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.02 07:32:33 UTC