# SDR 95ZZZX2728

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Engine: Lyc O320E2D
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve
- Part number: AL19001
- Condition: Worn
- Location: Exhaust
- Part time: 296 hours
- Stage of operation: IN
- Nature of condition: E, R
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX2728

## Discrepancy

ENGINE RAN ROUGH AT IDLE AND LOUD MECHANICAL NOISES WERE REPORTED.  VISUAL INSPECTION OF ENGINE BEFORE DISASSEMBLY SHOWED ZERO VALVE STEM TO ROCKER CLEARANCE.  DISASSEMBLY OF CYLINDER SHOWED EXHAUST VALVE PN AL19001 WORN EXCESSIVELY IN THE RETAINER GROOVE.  RECOMMEND REPLACEMENT OF EXHAUST VALVE.

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