I have a 330 Cummins that has a loose belt pulley. The pulley in question is behind the fan pulley. It has come away from the fan housing and is rubbing against the front of the engine block. I was able to pry it back toward the fan pulley but it will not stay there. It would seem that some sort of retaining device is missing. Anybody?
Most all pulleys which are engine driven have bolts in the "inside" of the hub drilled and tapped into the driving shaft. Looks like yours are sheared allowing the pulley to float. Believe radiator must be pulled for access. Some Berkshire guys had this happen to them. Check the Berk chapter for Cummins engine trouble. You should not operate it till repaired.
Thanks, the thing that caused me to check it out was a small pile of shredded rubber under the engine, then I could hear a rubbing sound.
Sound as if you are correct though. No doubt it will be expensive.
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