A320飞机维护手册 AMM ENGINE 发动机 2(32)

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 Subtask 72-32-00-210-052
R A. Inspection/Check of the HPC Front Stator Assembly
 CAUTION : LEVER ARM DISTRESS OR MISASSEMBLY RESULTING IN VANE SCHEDULING
_______ ERRORS IN EXCESS OF 4 DEGREES REQUIRES SPECIAL INSPECTION/ DISPOSITION OF COMPRESSOR ROTOR BLADES.
R (1) Insepct the following areas: R
R (a) If vane scheduling errors occur (Ref. TASK 72-00-00-200-009).
 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Casing for :
 - Cracks  Not serviceable  See limit extensions
 (Ref. TASK 72-00-00-200-025)
 - Nicks, pits, scores and scratches  Any number, any length, 0.010 in. (0.25 mm) deep after removal of high metal See limit extensions(Ref. TASK 72-00-00-200-025).
 2. Vane actuation rings for :
 - Cracks (or broken)  Not serviceable  See limit extensions (Ref. TASK 72-00-00-200-025)
 - Distortion, bends, twists or distress  Not serviceable  See limit extensions(Ref. TASK 72-00-00-200-025)
 - Separation  Not serviceable  See limit extensions (Ref. TASK 72-00-00-200-025).

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 Compressor Front Stator Assembly-Inspection
 Figure 601/TASK 72-32-00-991-300
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R R  Stator Vane ID to Rotor Contact Figure 602/TASK 72-32-00-991-304- 12 (SHEET 1)
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R R  Stator Vane ID to Rotor Contact Figure 602/TASK 72-32-00-991-304- 22 (SHEET 2)
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 -------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
- Damaged or broken lever arm bushing  Bushing body is intactand provides 360 degrees support to lever arm pin
 - Missing bushings  Not serviceable 
R R  - Missing or broken bushing legs Any amount 
3. Actuation ring connector for :
 - Cracks (or broken) one side only  Not serviceable 
- Cracks (or broken) both sides Not serviceable
 4. Vane lever arms, IGV's and stage 3 for :
 - Broken or bent  Not serviceable 
- Cracked  Not serviceable 
- Nicks, dents and scratches  Area A not serviceableArea B 0.010 in. (0.25 mm) after removal of high metal provided bottom of defect is not sharp pointed. Area C (not including pin) 0.002 in. (0.05 mm) deep.

Replace bushing
See limit extensions(Ref. TASK 72-00-00-200-025)
Remove engine for replacement of HPC rotor blades in one stage forward of and 2 stages aft of stage with defective lever arms
Replace lever arm (Ref. TASK 72-32-00-000-004) and (Ref. TASK 72-32-00-400-004)
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5. Vane lever arms, stage 1 and 2 for : (Ref. Fig. 601/TASK 72-32-00-991-300)
 - Broken or bent

- Cracked

- Nicks, dents and scratches

6. Vane assembly, IGV's and stage 3 for :
 - Looseness
7. Vane assembly, stages 1 and 2 for :Not serviceable
Not serviceable
Area A not serviceableArea B 0.010 in. (0.25 mm) after removal of high metal provided bottom of defect is not sharp pointed. Area C (not including pin) 0.002 in. ( 0.05 mm) deep.
Any amount of radial and side movement provided bushing not missing. No metal to metal contact allowed. (Listen for metallic sound while shaking vane stem)Remove engine for replacement of HPC rotor blades in one stage forward of and 2 stages aft of stage with defective lever arms
　
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