# SDR 2015FA0000109

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2015
- Submitted: March 25, 2015
- Operation: General aviation
- Aircraft: [N672EB](https://openairdocs.org/aircraft/N672EB), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S8672
- Aircraft time: 2,634 hours
- Engine: Lyc IO360L2A
- Engine time: 634 hours
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Servo
- Condition: Loose
- Location: Fuel Sys
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2015FA0000109

## Discrepancy

FOUND FUEL SERVO COULD BE MOVED BY HAND SLIGHTLY. ATTACHING NUTS TORQUE STRIPE INDICATED NO BACKOFF OF THE 4 NUTS.  SERVO IS MOUNTED ONTO AN ISOLATION BLOCK WITH 2 EA, PN 66224, GASKETS. FOUND NO DAMAGE AND INSTALLED 2 NEW GASKETS, TORQUE AND RECHECKED 14 HRS LATER AND RETORQUED.  SUSPECT 2 GASKETS AND ISOLATION BLOCK COMPRESS AND CAUSE LOSS OF TORQUE.  BY RETORQUEING SOME HOURS LATER MAY HELP. NO SPECIFIC PROCEDURES FOUND IN MM.

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