Service difficulty report · Connecting Rod

Difficulty date
April 3, 2001
Submitted
April 3, 2001
Operation
General aviation
Engine
Cont IO520D
Engine time
0 hours
Part
Connecting Rod
Part number
655004
Condition
Gouged
Location
Engine
Part time
0 hours
Stage of operation
IN
How discovered
V
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

FACTORY NEW ENGINE WITH 0 HRS TTIS WAS BEING DISASSEMBLED FOR CRANKSHAFT REPLACEMENT UNDER MSB 00-5. THE MAJORITY OF CONNECTING ROD BOLTS COULD NOT BE REMOVED WITH REASONABLE PRESSURE AND HAD TO BE DRIVEN OUT OF THE CAP. INSPECTION REVEALED THAT THE ROD BOLTS EXHIBITED A BURR AND EVIDENCE OF GALLING ON THE SHANK AT THE POINT WHERE THE ROD AND CAP PARTING SURFACE WOULD BE. INSPECTION OF THE CAPS SHOWED DAMAGE EVIDENCED BY SIGNIFICANT GOUGING WHERE THE BOLTS HAD BEEN REMOVED, RENDERING THEM UNSERVICEABLE.