1970 Plymouth Duster



April, 29, 2011 AT 7:29 PM

Put new serpentine fanbelt on but it keeps tracking off my harmonic balancer pulley towards the engine. The old bely although noisy tracked true any suggestions was thinking maybe the tension pulley doesn't put enough tension? I really am trying to finish this car its my daughters 17th birthday and I fixed her up a nice 70 duster with 318 that old owner converted the belt system to be a serpentine belt the old owner was going to put a supercharger on it think he had a few rocks in head but he made it new motor but has serpentine belt instead of the old multi belt all the pulley lines square right up with each other it just seems to want to track on the pulley on harmonic Balancer any suggestions

3 Answers



April, 29, 2011 AT 8:10 PM

The belt tracks off the pulley because something isn't aligning correctly. Either one of the pulleys is not in proper alignment or one of them has a worn bearing causing the the pulley to lean under pressure which which will make it track off the side of the pulley.



May, 12, 2011 AT 1:00 AM

Try taking the serpentine belt off and turning it around, so that the opposite edge is facing the original direction. If the tracking is any different, the problem may be the belt itself. Are you sure that engine is not a 340 magnum? Who would want to supercharge a 318?



June, 30, 2011 AT 11:27 PM

Closing question

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