# SDR CA000306009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2000
- Submitted: April 14, 2000
- Operation: Air carrier
- Make and model: Dhav DHC6
- Engine: Pwa PT6A20
- System (JASC): [2822 · Fuel Boost Pump](https://openairdocs.org/jasc/2822)
- Part: Armature
- Part number: 37817
- Condition: Misoverhauled
- Location: Pump
- Component: Lear Romec, Dhav, RR12830A
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA000306009

## Discrepancy

(CAN) PUMP WAS SENT FOR OVERHAUL.  INTERNAL INSPECTION REVEALED THAT THE ARMATURE HAD BEEN MODIFIED BY REDUCING THE ARMATURE SHAFT SIZE AND SUBSTITUTING THE ORIGINAL BEARING WITH A COMMERCIAL BEARING THAT HAD THE SAME OUTSIDE DIAMETER, BUT A SMALLER INSIDE DIAMETER,TO ACCOMODATE THE REDUCED SHAFT SIZE. THE COMMUTATOR END BELL (PN 67824) HAD ALSO BEEN MACHINED TO ACCEPT A BEARING LINER IN THE END BELL. DUE TO OTHER PROBLEMS WITH THE PUMP, THE UNIT WAS DEEMED BEYOND REPAIR.  UNIT REMOVED FROM SERVICE.

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