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  1. #1
    Silver Member
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    Sep 2003
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    104
    Location
    Chehalis, WA
    Tractor
    Kubota L245DT, Kubota L3200HST

    Default Hydraulic pump on PTO shaft problem

    I have a hydraulic pump which is driven off my PTO shaft to power my backhoe. I seem to have a recurring problem with the 3/4" shaft going into the PTO adaptor from the pump. It keeps loosening up, causing the pump to fall away from the PTO shaft. The two are held together with a keeper shaft and set screw. Does anyone have a solution to keeping these attached? Other than welding them together. This has happened about ten times, it's getting a little frustrating. Thanks, Doug

  2. #2
    Super Member
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    Sep 2000
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    6,515

    Default Re: Hydraulic pump on PTO shaft problem

    Drill a small hole where the set screw goes in so it can go in deeper. Then use loctite on the screw.

    jb

  3. #3
    Super Member RickB's Avatar
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    Sep 2000
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    7,039
    Location
    Eastern NY
    Tractor
    Case 885, JD 730D, Ford 4000

    Default Re: Hydraulic pump on PTO shaft problem

    Quote Originally Posted by john_bud View Post
    Drill a small hole where the set screw goes in so it can go in deeper. Then use loctite on the screw.

    jb
    Also consider a second set screw 90 degrees from the original.

  4. #4
    Platinum Member
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    Nov 2008
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    547
    Location
    Central Illinois
    Tractor
    Many JD

    Default Re: Hydraulic pump on PTO shaft problem

    Use a long set screw and put a jam nut on the outside to clamp down on the outer sleve and put another 90 deg. away like suggested. Or cross drill and put a long bolt through both couplers. Be aware of the posibility of getting loose clothes cought on the screws sticking out.

    Dan
    Last edited by DanD78; 02-23-2009 at 06:08 AM. Reason: Had another idea

  5. #5
    Silver Member
    Join Date
    Sep 2003
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    104
    Location
    Chehalis, WA
    Tractor
    Kubota L245DT, Kubota L3200HST

    Default Re: Hydraulic pump on PTO shaft problem

    Thanks for the replies. Since the original set screw tightens on the keeper, I think I'll drill and tap a second hole where RickB and JB suggest. Then drill a small indentation in the shaft for the set screw to actually set in thereby preventing the shaft and sleeve from separating, and use some Loctite this time.

  6. #6
    Super Member
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    Sep 2000
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    6,515

    Default Re: Hydraulic pump on PTO shaft problem

    That should do it.

    jb

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