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need help with old school fisher plow

Discussion in 'Fisher Engineering Discussion' started by SNO-MAN_DAVE, Jan 25, 2012.

  1. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    i recently got a 94 f-150 and i had a old fisher plow, i believe it is a 7.5' Fisher Speed Caster. goes up and down fine but when i try to angle it will only go right. if i switch the hoses around i will go left just fine but then it will not angle back to the right. Any help would be great
     
  2. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,598

    What pump?
     
  3. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    not sure it is an electric pump that is monted behind the front bumper and i can here it run when trying to angle both ways but will only move one way
     
  4. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,598

    Is the pump and lift ram one unit? Or are they two separate units?
     
  5. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    they are separate units if it helps it has a cable style underhood valve model # 4465
     
  6. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,598

    This may be a little too old for me. I have mainly worked on the newer stuff. Let me see what I can dig up. I do know if the cables are not adjusted properly it can cause your issue.
     
  7. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    ok thanks. i do now it has just got new cables installed but not sure on the adjustment or how to do that properly
     
  8. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,598

    Look like this?

    6285_052793.pdf (application-pdf Object)_1327503851663.jpg
     
  9. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    yes thats it
     
  10. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,598

    Is your cables adjusted so the control is centered?
     
  11. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    i believe they are
     
  12. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,598

    Sorry but other than that I am at a loss. These valves were pretty bulletproof. I have torn into one so I really do not know where to go from here. Hopefully one of the old time gurus will be around to help you out.
     
  13. Is the pump belt driven by the engine with what looks like an A/C clutch on it? Do you hear the clutch engaging when you operate the cables?
     
  14. If it has that style valve body I seriously doubt it is an electric pump. Was this plow on the truck originally? Can you take a picture for us?
    This is a conventional setup and not a MM1 correct?
     
    Last edited: Jan 25, 2012
  15. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    correct it is a conventional style and no i dont believe that this is original to the truck and it has the valve that is pictured above
     
  16. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    valve and pump pump is located behind the bumper and valve is on left wheel well

    DSCF1108.jpg

    DSCF1107.jpg
     
  17. I've had Fisher plows since the mid 70's and I've never seen a pump like that in that location. I think you may have some type of homemade hybrid setup there or something that pre-dates my knowledge. Having said that, what you describe sounds like a cable/valve adjustment issue. The inner cable is the angle function. Be sure that the plunger goes in for angle one way and out for the other.
    May be someone else will jump into this later on. Sorry.
     
    Last edited: Jan 25, 2012
  18. Buster F

    Buster F Senior Member
    Messages: 208

    If you have quick couplers on the hydraulic lines you my want to try swapping them out on the hose that is not flowing.
     
  19. grandview

    grandview PlowSite Fanatic
    Messages: 14,609

    Almost sounds like an air lock.
     
  20. SNO-MAN_DAVE

    SNO-MAN_DAVE Junior Member
    Messages: 18

    Are the angle hose lines supposed to be on the same side of the valve body? The way it is currently hooked up one is on the in side and one is on the out side of the valve