Cleaning of the LP Compressor Blades [IAE]

TASK 72-31-11-100-010-A
Cleaning of the LP Compressor Blades

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

1. Reason for the Job
This TASK gives the procedure for the cleaning of the LP compressor blades.
This TASK can contribute to fuel savings.
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	BRUSH - BRISTLED, SOFT
No specific	AR	MAT - WORK
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-005)	solvent cleaner
(Material No.V01-124)	Isopropyl Alcohol, Technical grade
(Material No.V01-230)	gas path cleaner
(Material No.V01-232)	gas path cleaner
(Material No.14SBA1)	Textile-Lint free Cotton -

3. Job Set-up
Subtask 72-31-11-941-055-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 72-31-11-941-058-A ** ON A/C NOT FOR ALL

B. Put the support equipment in to position
(1) Put the ACCESS PLATFORM 1M(3 FT) in to position to give access to the engine for the cleaning task.
(2) Put the MAT - WORK in to position in the fan case.

NOTE: Make sure that the red warning pennants of the workmat can be seen external of the aircraft. Make sure the workmat has sufficient dimensions to give full protection to the lower half of the fan case surface.

4. Procedure
Subtask 72-31-11-110-052-A ** ON A/C NOT FOR ALL

A. Clean the LP compressor

CAUTION: THE LP COMPRESSOR ROTOR BLADE TO BE WASHED MUST BE POSITIONED TO BOTTOM DEAD CENTRE TO PREVENT FOREIGN MATTER GOING IN TO THE BLADE ROOT.

(1) Turn the LP rotor blade to be cleaned to bottom dead centre.
(2) Enter the inlet cowl and clean the LP rotor blade with a clean Textile-Lint free Cotton - (Material No.14SBA1) or BRUSH - BRISTLED, SOFT made moist with solvent cleaner (Material No.V01-005) , V01-124Isopropyl Alcohol, Technical grade or gas path cleaner (Material No.V01-230) to gas path cleaner (Material No.V01-232) .
(3) Wipe the LP rotor blade dry with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
(4) Do again steps (1), (2) and (3) until all the LP rotor blades are clean.

5. Close-up
Subtask 72-31-11-942-054-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) Remove the support equipment
(3) Remove the workmat.
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:00:42 UTC