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Fluid leak

Discussion in 'Boss Plows Discussion' started by Avitare, Dec 9, 2007.

  1. I have a modest leak but needs attention.

    Looking for advice to redo the connection that will last.

    The current leak is for the lift cylinder hose.
    Probably too much movement while having to remove the
    cylinder to check/add fluid ( ironic).

    So when I spotted the tell-tail fluid in the snow, I noticed
    that the connection at the top of the control cabinet was red
    with fresh fluid. I could turn it by hand.
    A slight turn with the wrench seemed to stop it for now.
    But, I can see the hoses and fittings need to be re-directed
    and I will try and reposition them.

    Q: should I take these apart and use any thread tape before re-assembling ??

    I will remove the lift cylinder --again -- and check what is happening
    under the cover, as well.

    The fitting on the lower hole of the cylinder moves easily, too.

    All of the others seem tight.

    thanks in advance
  2. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 9,883

    The threads do not make the seal.
    The smooth tapered part does.

    The swivel can get bent making it tough to get a good seal and may need to be replaced.
    Try repositioning it and tighten it.
    If it still leaks replace the fitting.

    Do not use tape on a hydraulic fitting as the threads do not make the seal

    Having said that, the threads that go in to the ram are not a compression fitting and the threads do make the seal.
    IF, IF it still leaks from there after tightening it, then your only way to fix it with out a new fitting may be to use a little tape.

    If it is leaking from where it goes into the valve body remove and clean and take a look at the o-ring for any damage if so equipped..
    Last edited: Dec 9, 2007
  3. tightening...

    I was planning on loosening the swivel and getting a wrench on the
    hex below (11/16 ?) and snugging that.
    Then trying to retighten the swivel into a position that wont hit
    another fitting or hose.

    Is that what you mean ??
  4. Garagekeeper

    Garagekeeper Senior Member
    Messages: 459

    The fitting on the valve body that you see on the top of the tower are all o'ring fittings.
    The nut on them retain the o'ring into the bore on the valve body sealing it and locking the fitting in place. The lower port on the lift cylinder is o'ring sealed also, so the nut needs to be kept snug. The o'rings are replaceable if damaged.
    :rolleyes: John...
  5. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 9,883

    you got it;)

    Under that hex& washer is an o-ring that makes the seal going into the valve body.

    90% percant of the time snuging things up will fix the leak.
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    And just so it gets mentioned, the upper port on the back of the lift cylinder is pipe thread,,
  7. thanks

    think I see what you (all) mean and I will take care to follow
    your advice
  8. fixed?

    I tightened the nut to the top of the pump and then the swivel.
    Then I noticed the wet fluid around the fitting to the hose -- not the treaded
    part to the brass fitting , but the 11/16in to the 90deg fitting that I just snugged.

    note: this last fitting turns out to be left handed (?) and the treaded brass is
    right handed.

    I dried the old fluid with paper towel, topped the fluid in the pump (a little less
    than a pint), raised and lowered the plow -- no leak.

    Then the undo-redo with the cover ( real pain)
    Still no leak.

    Plowed my own drive ( always the last one), touched up a few others with a quick
    swipe. No leak.
    Plowed a new construction site for 30minutes, -- no leak.

    [getting to the point]
    then, I was asked to do a little drive that required several passes with full angle,..
    and there was fluid trails all over the snow.

    Hard to tell if it was coming from the fitting. Worried for awhile, shovelled,
    and went back to plowing the balance.

    Drove to 3 more and -- no more fluid.

    I'm sure if I check the pump tomorrow, I will be down atleast an inch from the top
    (spec is 3/4in) -- probably half a pint to the spec.

    Guessing that I am blowing fluid out the breather ( 1999 plow is under the cover)
    Why am I overfilling ?? (if that is what you think I am doing)

    The good news is : I think the fitting is okay -- but lost confidence.
  9. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    If you got the leaks fixed and it's only pushing the fluid out the breather then I wouldn't worry too much about it. Once it pushes out any excess fluid it should stop leaking. Just keep an eye on it for a while...
  10. 92XT

    92XT Senior Member
    Messages: 343

    Check both ram angle seals (underneath ) for weeping. One may be squirting or weeping when pressure is applied.
    keep a gal of warm trans fluid next to ya.
    Last edited: Dec 11, 2007
  11. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 9,883

    :rolleyes:that's what I was going to say...
    but B&Bsaid it better;)

    :rolleyes:Whatever you do, do not use trans fluid in your plow.:dizzy:

    No matter how warm it is.
  12. See fixed it--above

    Or, my dealer - Truck and Trailer/Boyne Falls, MI -- fixed it.
    Very reasonable and in a nice warm shop with good people and warm coffee.

    btw: passed out 8 sample cans of FF

    The new fittings are better and trouble free.

    And-- they showed me where the fluid filters are in the pump and what they look like.
    Very helpful day.

  13. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 9,883

    :rolleyes:Good deal..
    How does she work now?
  14. 92XT

    92XT Senior Member
    Messages: 343

    Been using trans fluid in plows since we were kids , atleast around these parts , son
  15. 92XT

    92XT Senior Member
    Messages: 343

    at a boy farmer , ill learn yer a**
    just keep posting my posts , son
  16. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 9,883

    Son, It's time you came out of the cold and stepped into the 21 century their caveman.

    Hint Your younger than I am ,BOY!

    1. Is your plow an transmission?
    2. around hear it gets cold.
    The wax " paraffin" will separate and clog your filter.
    the wax will get thicker as the temp drops causing your pump to run slow making your electric motor draw more amps.

    The reason your truck that uses atf still runs is the fluid runs thought your radiator, not only does the radiator cool but it actually WARMS the fluid;) and the filter in the tranny has a much larger surface area.

    Has your tranny that uses atf ever wine or act sluggish on a cold morning?
    Hummm I wonder why?
    BOY! ho house boy! I mean 92xt go get me a beer:drinkup:
    Last edited: Dec 13, 2007
  17. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 9,883

    What you gone to learn my A$$?

    The last thing I would ever do is let you stand behind me! but boy!

    I was talking to Avitare
    (notice the rollie eyes and my post being just below his....)

    Not everything is about you.;)
  18. plow works great

    pretty good test today
    no leaks

    little concerned that the Aframe bolt is overtightened.
    frame is compressed tight. Definately no more wiggle.
    Turns okay and greased up.

    Thinking that we are taking off the yard guard tomorrow
    Winter may be here real.

    new tire pressure working well too
    We have a good setup this year
    Feel better when I get the trans temp guage installed.
    And synthetic trans fluid ( in the trans)

    thanks for your help
  19. powerjoke

    powerjoke PlowSite.com Addict
    Messages: 1,341

    AVITARE: B&B & SNOFARMER have been around the plow buis forever you can take what they say to the bank 'cause it's good advice.

    now as far as the ATF :nono: i' don't think so either, the reason is i had a flostat (western) with stickin valves and irratic operation and drained the ATF and cleaned the filter NO MORE PROB.

    92XT: "CONTRACTOR not liable for slip/fall litigation , unattended vehicles or property damage."

    why is that in your sig? do you have a lot of slip&fall's? ever thought about salt or somthin there son? you know i am about as suthern as it gets on here and instead of talkin down to people it shore would be rite nice if you'd respect em. sorry bout that but the "SON" thing kinda pised-me-off
  20. 92XT

    92XT Senior Member
    Messages: 343

    Oh .... ok .......I'll have to put PLOW fluid in my trans.I'll have to try some too .
    Last edited: Dec 14, 2007