I have a Komatsu site truck that I have been chasing an engine problem. I finally found it to be excessive crankshaft end play. Over .250. This is causing a clearance issue with the Ne sensor for eng RPM. I am wondering if anyone else has had thrust bearing failure with Komatsu SAA6d-140E engines or any others. I have not torn it down yet. A thrust failure does not make sense to me because there is no pressure against it. No clutch.
HM-400 Crankshaft wander
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