Thursday, January 19, 2012

Crankshafe Peterbilt 378?

what happend is the crankshafe of a Peterbilt is not on timeCrankshafe Peterbilt 378?
The crankshaft is not adjustable. I suspect the timing gears for the camshaft have either slipped or broken. Either way there's no easy fix. I imagine you're trying to make repairs yourself and have found they're quite involved. You don't say what type engine you have, Detroit, Cummins, Cat, so I really can't advise you much more than I have. I do suggest you have the truck taken to a reputable repair shop. If the camshaft is defective the heads may need to be removed to repair. Either way it's not something to try unless you are an experienced technician. Best of luck.

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