Service difficulty report · Pulley · Urocop EC130B4

Difficulty date
May 28, 2011
Submitted
September 9, 2011
Operation
Air carrier
Make and model
Urocop EC130B4
Aircraft time
544 hours
Engine
Tmeca ARRIEL2B1
Part
Pulley
Part number
350A35109222
Condition
Worn
Location
Hyd Pump
Part time
598 hours
Component
Pump
Component part number
350A751043
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

HYD PUMP PULLEY ASSY WAS FOUND TO BE WORN BEYOND LIMITS AND REQUIRED REPLACING THE PULLEY ASSY AND BEARING. THE BEARING IS NORMALLY A PRESSED FIT REQUIRING HEATING ONE PART AND COOLING THE OTHER BUT ON INSP THE BEARING WAS LOOSE ENOUGH TO FALL OFF THE PULLEY ASSY JUST BY TURNING IT OVER. BEARING WAS DIMENSION CHECKED AND WAS ALSO BEYOND LIMITS.

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