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  1. #1
    New Member
    Join Date
    Jul 2013
    Posts
    4
    Location
    Prairieville, LA.
    Tractor
    Bobcat 963

    Default New member needing help! 963 leaking oil in the chain case

    I recently purchased a 963 bobcat, knowing it had hydraulic leaking in the chain case. The guy I bought it from said he replaced both drive motor shaft seals and it didn't fix the problem, the motors are strong and pull straight. It leaks about 1gph when at idle, not working and 2gph when working it doesn't seem to leak when the machine is off after it has lost pressure. He believes it to be an internal drive motor seal and the motors need to be rebuilt, it seems to me there would be a loss of power or something wrong with their operation - am I correct here? Is there somewhere else hyd. oil can get into the chain case? Any help would be greatly appreciated...

  2. #2
    Elite Member
    Join Date
    Apr 2012
    Posts
    4,116
    Location
    Middle Tennessee
    Tractor
    My tractor is an old MF

    Default Re: New member needing help! 963 leaking oil in the chain case

    Welcome to TractorByNet.

  3. #3
    New Member
    Join Date
    Jul 2013
    Posts
    4
    Location
    Prairieville, LA.
    Tractor
    Bobcat 963

    Default Re: New member needing help! 963 leaking oil in the chain case

    Thanks, it's good to be here interacting with all these good people like you.

  4. #4
    Elite Member Briana03's Avatar
    Join Date
    Jul 2010
    Posts
    3,292
    Location
    San Diego, California
    Tractor
    None

    Default Re: New member needing help! 963 leaking oil in the chain case

    Welcome to TractorByNet!

    I moved your thread to the Bobcat Construction Equipment forum.
    Briana
    TBN Support

  5. #5
    Veteran Member SSdoxie's Avatar
    Join Date
    Jun 2010
    Posts
    2,250
    Location
    Cumberland Plateau, TN
    Tractor
    Bobcat CT225

    Default Re: New member needing help! 963 leaking oil in the chain case

    The 963 has a hydraulic activated Park Brake built into the gear reduction case inside the chain case. If getting a leak from the hydraulic reservoir into the chain case and problem is NOT the seal at the drive motor, most likely there is a leak somewhere in the brake circuit.
    Dennis

    CT225 w/7TL QA FEL, 60"tooth dirt bucket, 68" smooth bucket, Pallet Forks, Bale Spear. Hydrualic top llin, QH, 48 RC, 60" tiller, Angle blade, Landscape rake, Carry-all, Post hole auger.

  6. #6
    New Member
    Join Date
    Jul 2013
    Posts
    4
    Location
    Prairieville, LA.
    Tractor
    Bobcat 963

    Default Re: New member needing help! 963 leaking oil in the chain case

    Thank you SSdoxie,

    You hit the nail on the head, I found it Monday; thank goodness. I was starting to get worried that I made decision buying the machine but, it turned out to be a good deal at $7900 with only 1093hrs.

    Do you know of anything else that is common to fail on this machine?

    Thanks again for your help.

  7. #7
    New Member
    Join Date
    Aug 2013
    Posts
    3
    Location
    calgary
    Tractor
    751 & 963 bobcat

    Default Re: New member needing help! 963 leaking oil in the chain case

    Wow, good deal but you didn't mention the year. I just bought a 1998-963 here in Alberta, Canada & I paid $15,500 and thought I got a good deal, with 3100 hr. I was writing the cheque when another guy came in to buy it. It's got the servo drive as I am told and this makes it very jerky. If you sneak up on something, ya got to throttle right down. What a tank!....just thought I would respond....Dean

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