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MVP Plus leak

Discussion in 'Western Plows Discussion' started by NSDOT, Feb 6, 2010.

  1. NSDOT

    NSDOT Senior Member
    Messages: 109

    Looks like it's coming from a hole on the base of the motor?? Possible?? Can't seem to see it on the outside of motor.....thoughts?? Thanks
     
  2. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    Is there a gasket there?
     
  3. OneBadDodge06

    OneBadDodge06 Senior Member
    from Iowa
    Messages: 734

    Yeah its possible. Its not really so much a gasket as it is a seal.

    With a bad seal between the motor and hydros, it'll leak up into the shaft.

    I had the dealer do mine since the whole assembly has to be taken apart...or so I was told.
     
  4. NSDOT

    NSDOT Senior Member
    Messages: 109

    I looked at it again since I took it off, can't see any fuild on the outside of the caseing , just drips off the bottom. The breather had pressure behind it, is that normal? Thanks
     
  5. cubicinches

    cubicinches PlowSite.com Addict
    Messages: 1,412

    If you've got an MVP plus, the motor is on the bottom... so it's actually upside down. When you say the fluid is coming from the base of the motor, do you mean the base as in where it mounts to the valve block?
     
  6. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    Last edited: Feb 6, 2010
  7. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    The pressure is normal. That's how they keep it from sucking air - and moisture - in and out.

    The hose fittings have o-rings where they screw into the manifold. The o-rings are prone to failing :angry:
     
  8. NSDOT

    NSDOT Senior Member
    Messages: 109

    Thanks for the reponses, no fluid around the breather, and yes it seems to come though the base of the motor rather than the pump/motor split, it must be one of the o rings you mention. Just hard to see, I'll try a spotter today and put it though it's functions.
     
  9. Nestech

    Nestech Senior Member
    Messages: 105

    It is likely the seal between the motor and the hydralic pump. It will leak down through the armature and come out the bottom of the motor. It is about an hour job to do.
     
  10. NSDOT

    NSDOT Senior Member
    Messages: 109

    Today I topped it up and tried it after I used it a steady heavy drip was coming from a hole in the base of the motor....so the seal between the motor and pump seems likely. How complex a job is this, I'm fairly competent, but will it puke out a bunch of springs and tiny bits when I split the motor and pump? Any advice I'm grateful for. Cheers
     
  11. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    Last edited: Feb 8, 2010
  12. Nestech

    Nestech Senior Member
    Messages: 105

    Western has a kit which all dealers should have, It comes with a bolt and spacer to press the seal in nice and straight. Also, there is a protective cone that goes over the shaft so the new seal does not get harmed on re-asembly. I would recomend your dealer doing this. However if you are careful it can be done without the kit.
     
  13. NSDOT

    NSDOT Senior Member
    Messages: 109

    Ordered that kit, (80 bucks!), and I think that will be the fix, thanks a whole lot for your help. It's a great source of info here!! Cheers, FMK
     
  14. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    Good luck with the repair
     
  15. NSDOT

    NSDOT Senior Member
    Messages: 109

    Mission accomplished, seems to have worked. The seal did look distorted, the strange thing was in the kit I recieved from my dealer, the cap screw to make the puller wasn't long enough to reach the part that was supposed to seat the seal. I just used it as a driver to put the seal in place. Otherwise pretty straight forward, thanks again for the advice! Cheers, FMK
     
  16. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    glad everything work out for you..........Happy plowing........