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Fisher Extreme SS V lift problems

Discussion in 'Truck & Equipment Repair' started by armedbear357, Nov 16, 2014.

  1. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    new to site, just hooked up 1st time this year and everything worked fine except no lift . I used floor jack lift plow and plow motor runs w/out any weight but once ram is at top and you release the fish stick and ram drops even w/ot any weight on it. Any info or prior knowledge . Plow is 6yrs old thanks
     
    Last edited: Nov 16, 2014
  2. peteo1

    peteo1 PlowSite.com Addict
    Messages: 1,659

    Let's start with this, is it leaking anywhere?
     
  3. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,621

    S3 stuck open.
     
  4. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    No leaks, wings move fine, been looking at my manual but couldn't determine which valve controlled the lift ram.
     
  5. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    I pulled back plastic cover if facing back plow as there are three valves ? S3 is at far right ?
     
  6. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    7634k-2 - fisher valve 2-way w/ nut
     
  7. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,621

    Correct. Thumbs Up
     
  8. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    Kimber, ? I called Fisher Tech this morning they advised valve S2 the middle valve was valve controlled the lift ram on my ex V .
     
  9. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,621

    Yes, S2 is for up. But believe you can't raise because S3 is stuck open since it falls back down when you release the button. Stuck S3 will let fluid bypass the lift ram and go right back to the reservoir. A bad S2 would still raise and hold since there is a check ball after the valve. If you want to test it, tighten the quill all the way and see if it will raise. If you see an improvement replace the S3.
     
  10. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    ok I'll check both thanks R they both the same part # ?
     
  11. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    Part # 7634k-2 ?
     
  12. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,621

    Believe theS3 and S2 are different part numbers. Don't have part diagram in front of me.
     
  13. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    I found it part # SV08-2004
     
  14. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    I had changed S2 last year couldn't beleive it was bad so soon. Thanks for help and insight ! Ttyl
     
  15. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    Extreme V speed skrew location ?

    morning , Kimber750, u assisted me last ? i had so fixed the lift issue now speed on XV . Where is the skrew to increase sped of plow on motor ?
    thanks
     
  16. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,621

    The pump relief is just above the motor on the back side of the pump. I would not mess with it unless you have a pressure gauge hooked up. The only other adjust is the quill, this adjusts drop speed. Quill is also on the back side of the pump just above the motor. These are the only two things that will adjust the speed of the plow. There is nothing that controls how fast the motor spins.
     
  17. armedbear357

    armedbear357 Junior Member
    from 02717
    Messages: 11

    Thanks

    Ok, thanks