Eaton 18 speed slave valve leaking air from vent

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Cam Roberts, May 13, 2018.

  1. spsauerland

    spsauerland Road Train Member

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    Your transmission is basically regulated @ 60 PSI plus or minus 2.5 psi. Regulator will be on back upper right corner of transmission. Low air pressure or leaking o-rings will effect range shifts. I have leakdown setup I made so I can check pressure and leakdown test on range piston. Fuller has service manual for troubleshooting air system on transmission on roadranger.com
     
    Goodysnap Thanks this.
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  3. Cam Roberts

    Cam Roberts Road Train Member

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    Thank you both. Next weekend or if I have another day off this week from rain, I will check air pressure and report back to this thread and let you know what I find. Thank you
     
  4. 062

    062 Road Train Member

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    Is the problem worse when trans is cold?
    I have a eaton reman,at about 300k it started being slow when cold,by 350k it stuck in low.
     
  5. Cam Roberts

    Cam Roberts Road Train Member

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    Seems to be consistent whether it’s hot or cold
     
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