Repair of the LP Compressor Stub Shaft - VRS1811 [IAE]

TASK 72-32-51-300-010-B
Repair of the LP Compressor Stub Shaft - VRS1811

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	ABRASIVE STONE
No specific	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	FILE - FINE
No specific	AR	MAT - WORK
No specific	AR	VIBRO ENGRAVER
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V05-019)	Waterproof silicon carbide abrasive paper
(Material No.V05-020)	waterproof silicon carbide
(Material No.V05-021)	Waterproof silicon carbide abrasive paper

C. Referenced Information

REFERENCE	DESIGNATION
TASK 70-23-05-230-010-A	Local Application of Fluorescent Penetrant Inspection
LP Compressor Stub Shaft
LP Compressor Stub Shaft

3. Job Set-up
Subtask 72-32-51-941-053-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).
(4) Put the ground support equipment in position.
(a) Put the ACCESS PLATFORM 1M(3 FT) in position to give access to the engine.
(b) Put the MAT - WORK in the air intake cowl.

NOTE: Make sure that the red warning pennants of the workmat can be seen externally.

NOTE: Make sure that the workmat has sufficient dimensions to give full protection to the lower half of the air intake cowl.

4. Procedure
Subtask 72-32-51-350-052-A ** ON A/C NOT FOR ALL

A. Repair of the LP compressor stub shaft curvic teeth.

LP Compressor Stub Shaft ** ON A/C NOT FOR ALL

(1) Remove galls and/or damage from the curvic teeh with the ABRASIVE STONE, the Waterproof silicon carbide abrasive paper (Material No.V05-021) and/or the FILE - FINE.
(2) Make the repaired area smooth and polish out scores on the curvic teeth with the Waterproof silicon carbide abrasive paper (Material No.V05-019) and waterproof silicon carbide (Material No.V05-020) . The surface finish must be the same as adjacent area.

Subtask 72-32-51-230-051-A ** ON A/C NOT FOR ALL

B. Do a penetrant crack test (Ref. AMM TASK 70-23-05-230-010).

Subtask 72-32-51-220-051-A ** ON A/C NOT FOR ALL

C. Do a detailed and dimensional check of the curvic teeth.

LP Compressor Stub Shaft ** ON A/C NOT FOR ALL

Subtask 72-32-51-350-053-A ** ON A/C NOT FOR ALL

D. Use the VIBRO ENGRAVER to write VRS1811 adjacent to the stub shaft part number.

5. Close-up
Subtask 72-32-51-942-052-A ** ON A/C NOT FOR ALL

A. Remove the ground support equipment.
(1) Remove the workmat from the air intake cowl.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:01:04 UTC