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Western Lift Problem

Discussion in 'Western Plows Discussion' started by Mr B, Jan 23, 2011.

  1. Mr B

    Mr B Junior Member
    Messages: 3

    Plow wants to lift, motor runs, angles right and left ok. When I try to lift it, the motor races as if it was bypassing. If I click the toggle up it seems to jump up a bit. All of the coils seem to have the same resistance in them. Appreciate any assisstance you may be able to offer
     
  2. Mister Plow

    Mister Plow Senior Member
    Messages: 139

    Check the S-3 solenoid (four-way valve). If it is not getting any power when you press the lift, then the controller is probably bad.
    Since it angles left, the solenoid itself, and the wiring to it is probably good.
    My guess is it is not getting activated, so the pump just bogs for a second, and then opens the relief valve and that's why it spins freely.
     
  3. Mr B

    Mr B Junior Member
    Messages: 3

    Thanks, since then I made sure that the ground to the coils are good, also power from the toggle to the up and down coil is good. I then switched one of the angle coils with the up and down coil. Still angles ok but still doesn't want to lift
     
  4. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    This is a unimount relay?

    That sounds like you have air in the system.

    Did you check the fluid level?

    Did you check the suction screen to see if it is clog?

    Did you check to see if you have moisture in the fluid?

    Did you at anytime flush the system out and drain the rams?

    did you check the grill plug to make sure it is clean and grease?

    As for the "S" valves;

    3way (S2)= left n right
    4way (S3)= left n raise

    So I would say there nothing wrong with the S3 valve because you do have left angle, If it would make you feel better, I would pull the s3 valve and check it to see if it spooling fully. Just remove the valve, put the coil back on to the valve. Using 12v, add a wire to one on the prong and to the positive side of the battery. Wire to the second prong on the coil to ground. When you touch ground, the shaft inside the valve should move freely in and out. If so , nothing wrong with the valve

    Here is the test
    probe here.jpg

    I would flush the system out completely

    maintenance flush.jpg .
    maintenance flushB.jpg

    probe here.jpg

    maintenance flush.jpg

    maintenance flushB.jpg
     
  5. Mr B

    Mr B Junior Member
    Messages: 3

    Hi twinman326, Thank-you very much for your expert advice. Changed fluid, found a small amount of ice in bottom of reservoir, cleaned suction filter, drained cylinders. Slight contamination in bottom of reservoir. Unit is now functioning quite well. Thanks again