SDR 98ZZZX2171

Service difficulty report · Pump · Piper PA31350

Difficulty date
May 26, 1998
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N3581C
Make and model
Piper PA31350
Aircraft serial
318052091
Part
Pump
Part number
1213HBG310A
Condition
Failed
Location
Rt Eng Hydraulic
Part time
226 hours
Stage of operation
NR
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PILOT REPORTED THAT THE LANDING GEAR SLOW TO CYCLE. MAINTENANCE PERFORMED PRESSURE CHECK OF THE ENGINE DRIVEN HYDRAULIC PUMPS. FOUND RIGHT ENGINE DRIVEN HYDRAULIC PUMP VERY WEAK. INSPECTED RT HYDRAULIC FILTER AND FOUND EXCESSIVE AMOUNTS OF METAL. REMOVED RT ENGINE HYDRAULIC PUMP AND DISASSEMBLED FOR INSPECTION. FOUND THE BEARING THAT SUPPORTS THE IDLER GEAR EXCESSIVELY WORN WHICH ALLOWED THE IDLER GEAR TO TILT AND GALL INTO THE PUMPS CAVITY.

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