Issues with 13spd eaton fuller

Discussion in 'Trucks and Trailers' started by mow king, Nov 14, 2011.

  1. mow king

    mow king LawnSite Senior Member
    Messages: 571

    We have a '99 Peterbilt with a eaton fuller 13spd hooked up to a C14 Cat. The truck has 500k original miles on it and had the tranny rebuilt about 75k miles ago.
    Anyways the driver came in with this complaint:
    "When going uphill with 32k pound or heavier load - the tranny will make a metallic ticking sound while in high range. If you switch to low range the ticking stops in either 7th or 8th gear"

    "I had it slip out of gear while in 8th gear when going up hill"

    "You will not hear it when bobtailing, only under load, the lighter the load, the lighter the sound and the heavier the load...the heavier the sound"

    Any clue what the problem is here? :hammerhead:
  2. Mow4It

    Mow4It LawnSite Member
    Messages: 48

    Is it a single disk or multi disk clutch? Multi disks will chatter when you lug them.

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