Cleaning of the Engine External Surfaces [CFML]

TASK 72-00-00-100-806-A
Cleaning of the Engine External Surfaces

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

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

1. Reason for the Job
This procedure gives instructions to clean the engine external surfaces.
NOTE: You can use equivalent alternatives for standard tools, equipment and consumable materials.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - PROTECTION
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1039)	acetone
(Material No.CP1040)	methyl ethyl ketone
(Material No.CP1041)	isopropyl alcohol
(Material No.CPNCL02069)	lint-free cloth
No specific	ethanol

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-809-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-809-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A	Closing of the Thrust Reverser Cowl Doors
ESPM 205500

3. Job Set-up
Subtask 72-00-00-941-232-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 72-00-00-010-318-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 72-00-00-040-156-A

C. Deactivation of the Thrust Reverser System for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-809).

Subtask 72-00-00-010-319-A

D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

4. Procedure
Subtask 72-00-00-110-095-A

A. Cleaning of the Engine External Surfaces
(1) Hydrocarbon method

WARNING: HYDROCARBONS ARE FLAMMABLE AND TOXIC. AVOID PROLONGED CONTACT WITH THE SKIN AND OBSERVE PRECAUTIONS AGAINST FIRE. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.

CAUTION: MAKE SURE THAT PLASTICS AND RUBBER-BASE MATERIALS ARE NOT DAMAGED BY HYDROCARBON SOLVENTS. IF THEY ARE, DAMAGE TO THE ENGINE CAN OCCUR.

(a) Light quantities of grease, oil, gum and dirt can be removed as follows:

NOTE: This method is not good in the removal of baked-on oil deposits.

1 For metallic parts without coating or component made of non metallic material:

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

a Clean manually with a cloth moist with only acetone (Material No.CP1039) or methyl ethyl ketone (Material No.CP1040) or isopropyl alcohol (Material No.CP1041) or ethanol.
2 For all the other parts:
a Clean manually with a cloth moist with only isopropyl alcohol (Material No.CP1041) to permit handling and inspection.
b Remove the accumulation with a clean lint-free cloth (Material No.CPNCL02069) .
c Wipe the cleaned area dry with a clean lint-free cloth (Material No.CPNCL02069) or rinse with clean water.
(2) Steam cleaning method

CAUTION: DO NOT ADD CLEANING COMPOUNDS IN THE STEAM USED FOR CLEANING. IF YOU ADD COMPOUNDS, DAMAGE TO THE ENGINE CAN OCCUR.

CAUTION: DO NOT POINT THE STEAM FLOW AT ONE AREA FOR TOO LONG. IF YOU DO, DAMAGE TO ENGINE PARTS CAN OCCUR.

(a) Install CAP - PROTECTION on tube ends, manifold openings and air extraction ports to prevent entry of contaminants or foreign objects.
(b) Steam clean the accessible external surfaces of the engine in accordance with ESPM 205500. To prevent any damage to exposed plastic parts, avoid dwelling of steam on such parts to minimize excessive build-up of heat.
(c) Remove CAP - PROTECTION that you have installed in step 4.A.(2)(a).

5. Close-up
Subtask 72-00-00-410-275-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

Subtask 72-00-00-440-147-A

B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-809).

Subtask 72-00-00-410-276-A

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:51:09 UTC