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What could case a Western Ultra Mount (mid weight) blade gradualy to fall?

Discussion in 'Western Plows Discussion' started by BRabbit, Jan 25, 2012.

  1. BRabbit

    BRabbit Junior Member
    from 50315
    Messages: 1

    We have two mid weight ultra mount blades (pump attached to blade) and one of them will gradually fall sometimes dangerously low. I tried filling the the resevour and tightening the packing nut but neither of those seemed to help. Any helpful suggestion would be much appreciated. Thank you!

  2. dieseltech

    dieseltech Senior Member
    Messages: 273

    Are you leaking from your lift ram
  3. mishnick

    mishnick 2000 Club Member
    Messages: 2,353

    As dieseltech said, if the ram is leaking fluid anywhere it will certainly drop down slowly because the pressure and fluid is escaping, however; if there is no leak then your S1 valve is failing. The S1 has a ball check valve built into it which opens to let fluid into the lift ram but closes to keep the ram up. If there is dirt in the valve it will leak down into the reservoir and you will see no fluid on the outside. Sometimes you can resolve the issue by taking the hose off the lift ram and blow some fluid into a bucket, by hitting up on the control, to flush dirt out, other times I have removed the valve and used compressed air and got lucky but if the ball or spring are damaged or the debree is jammed in there you will need to replace the S1.
    Last edited: Jan 25, 2012