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  1. C

    2006 Allison 6 spd: Trans pump bolt gaskets and copper washers?

    maybe copper washers for all 4? I wouldn't think any should leak if the gasket is seated right on the plate? I didn't look into my tranny with a camera before I pulled as I don't have one but there was 2 lines around the inside of the bellhousing where it almost looked as if oil was being...
  2. C

    2006 Allison 6 spd: Trans pump bolt gaskets and copper washers?

    Were you able to figure out what was going on with those bolts?? I have mine apart right now was planning on changing the same stuff you did