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air leak

Discussion in 'Western Plows Discussion' started by k&j Landscaping, Mar 11, 2014.

  1. k&j Landscaping

    k&j Landscaping Senior Member
    Messages: 123

    Of course hookup my poly pro with the flostat pump and run everything and all is fine. Drop blade turn off truck and here air pissing out of fluid filler neck area. Try everything, tightening filler cap still pissing air not sealing. Put pipe tape on threads, reinserted still pissing air but a lot less. Could filler cap be bad, rusted. Cleaned threads on cap reinserted, tightened. Out of answers. Any thoughts before heading to dealer in a.m. Big snow in Cleveland tomorrow, hopefully last one, hoping blade makes it thru. Any thoughts as to problem? Not leaking fluid just not sealing around filler neck with the original cap.
  2. Tony350

    Tony350 Senior Member
    Messages: 546

    Do you have the rubber wash on the cap or did it fall off? Do you have a plastic cap or a steel vent cap?
  3. 2006Sierra1500

    2006Sierra1500 PlowSite.com Addict
    Messages: 1,758

    Are you sure its not the breather?
  4. k&j Landscaping

    k&j Landscaping Senior Member
    Messages: 123

    Its is hissing around the npt plug in the filler neck for the reservoir. Funny thing is it was fine after I took it off the truck and let it sit for a week, hooked up today, ran it, set it down turned off truck and heard the hissing and discovered it coming from around the plug. Outta answers. have plastic cap and checked that is ok.
  5. mishnick

    mishnick 2000 Club Member
    Messages: 2,353

    That grey plastic cap does have a 5 psi valve in it so pressure should be held in the reservoir. This prevents the reservoir from breathing and collecting moisture. Either the vent cap is bad or the pipe threads are damaged. Try a new vent plug first then get a pipe tap and chase the threads if new still leaks.
  6. k&j Landscaping

    k&j Landscaping Senior Member
    Messages: 123

    Im thinking cap now as it just started after sitting for a week. Cheap part and will pu tomorrow and try. Otherwise just going to carry fluid and parts and get thru this annoying late season storm tomorrow. Unless anyone has another suggestion as to the problem.