Hand Cleaning of the Fan Gas Path and Fan Blades [CFMB]

TASK 72-00-00-100-025-A
Hand Cleaning of the Fan Gas Path and Fan Blades

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
This cleaning procedure gives instructions to remove the contamination from the fan blades, the Outlet Guide Vanes (OGV) and the acoustical panels of an engine, by hand washing.

NOTE: It is recommended that you clean the fan blades and the gas path at the same time.

NOTE: This task can contribute to fuel savings.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

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

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1039)	acetone
(Material No.CP1041)	isopropyl alcohol
(Material No.CP2011)	stoddard solvent
(Material No.CP2240)	scotch-brite type A CFS
(Material No.CP2279)	scotch brite type S CFS
(Material No.CP2470)	TURCO 5948 DPM
(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
(Material No.CP5060)	gas path cleaner

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. 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 72-00-00-100-008-A	Engine Washing Requirements
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

3. Job Set-up
Subtask 72-00-00-941-064-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 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 72-00-00-010-254-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 an ACCESS PLATFORM 1M(3 FT) in position.
(3) Install MAT - PROTECTIVE in the lower half of the inlet cowl.

Subtask 72-00-00-040-127-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser

WARNING: MAKE THE THRUST REVERSER UNSERVICEABLE. IF THE THRUST REVERSER IS NOT MADE UNSERVICEABLE, IT CAN OPERATE ACCIDENTALLY BECAUSE THE BLOCKER DOOR HOLD-OPEN ROD DOES NOT RESIST THE ACTUATOR HYDRAULIC PRESSURE. THIS CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT.

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

Subtask 72-00-00-010-255-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
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

4. Procedure
Subtask 72-00-00-110-062-A ** ON A/C NOT FOR ALL

A. Hand Cleaning of the Fan Gas Path

CAUTION: DO NOT USE METHANOL. IF YOU DO, THIS CAN CAUSE DAMAGE TO ENGINE TITANIUM PARTS.

(1) Mix 20 percent of gas path cleaner (Material No.CP5060) with 80 percent of water.
(2) Spraying

CAUTION: DO NOT SPRAY CLEANING SOLUTION DIRECTLY INTO BOOSTER (LPC) INLET. IF THE CLEANING SOLUTION IS PUT INTO THE BOOSTER INLET, THE ENGINE MUST BE OPERATED TO DRY OUT THE SOLUTION, OR ENGINE DAMAGE CAN OCCUR.

(a) Use anti-freeze mixture, if necessary (Ref. AMM TASK 72-00-00-100-008).
(b) Spray the blades, the Outlet Guide Vanes (OGV), the acoustical panels and the fan inlet and outlet with the wash solution. Do not spray the fan wash solution into the Low Pressure Compressor (LPC) inlet.

NOTE: Apply the solution to the two sides of the blade at the 6 o'clock position. This will decrease the amount of solution that touches the blade dovetails. The solution will remove the lubricant. If you wipe the blades, do it in the down direction, away from the rotor.

(3) Rub the sprayed areas with a cloth.
(4) Rinse the blades with water.

Subtask 72-00-00-110-063-A ** ON A/C NOT FOR ALL

B. Fan Blades Cleaning
(1) If the blades stay dirty, do the procedure which follows:

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

(a) Remove light deposits with soft cloth and acetone (Material No.CP1039) 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) or isopropyl alcohol (Material No.CP1041) or TURCO 5948 DPM (Material No.CP2470) .
(b) Remove heavy stubborn deposits with scotch-brite type A CFS (Material No.CP2240) or scotch brite type S CFS (Material No.CP2279) and acetone (Material No.CP1039) 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) or isopropyl alcohol (Material No.CP1041) or TURCO 5948 DPM (Material No.CP2470) .
(c) Rinse thoroughly with water.

5. Close-up
Subtask 72-00-00-410-218-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 72-00-00-440-121-A ** ON A/C NOT FOR ALL

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

Subtask 72-00-00-410-219-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 02:40:52 UTC