Maintenance Matters

July 1999 Issue

Bad Bearings

Inspections reveal an alarming trend of premature rod bearing wear

As some 3000 owners suffer through troubles with TCM crankshaft inspections, yet another quality-control related engine issue may be about to emerge: Accelerated wear on connecting rod bearings.

As we reported in last months issue, our survey of shops conducting the massive TCM crankshaft inspection turned up an incident of unusually high rod bearing wear on a low-time engine. Were seeing evidence that this may not be isolated.

As of early June, in an afternoon of phone calling, we found at least seven engines built by three overhaulers which appear to have prematurely worn rod bearings, some of which have come from Superior Air Parts but others that may have been supplied by ot...

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