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Case 1840 pump leak

Discussion in 'Skid Steers' started by Zachary Eggleston, Sep 25, 2020.

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  1. Zachary Eggleston

    Zachary Eggleston New Member

    Joined:
    Sep 25, 2020
    Messages:
    2
    Location:
    New Carlisle, OH 45344
    I have an '89 1840 with a Sundstran-Sauer M91-46 pump that is leaking. The pump works normally but it is leaking from the gasket that attaches to the rear of the pump engine side. It leaks without pressure and is no worse under pressure. I have rebuild other types of pumps and transmissions but not this one. My question is, anyone have experience with these and are there any common failure issues? Any special tools or info I might need to fix this or is this something I shouldn't do myself?
     
    Last edited: Sep 25, 2020
  2. Tones

    Tones Senior Member

    Joined:
    Mar 15, 2009
    Messages:
    2,295
    Occupation:
    Ex land clearing contractor, part-time retired
    Location:
    Ubique
    Most likely cause is a worn seal on the input shaft and possibly a damaged shaft. With the experience you say you have it won't be a problem, they're a simple pump.
     
  3. Zachary Eggleston

    Zachary Eggleston New Member

    Joined:
    Sep 25, 2020
    Messages:
    2
    Location:
    New Carlisle, OH 45344
    Thanks for the input. I have a manual coming Monday. I didn’t think it was anything special just want to make sure. Thanks again.