Western Snow Plows

Discussion in 'Bad Dog Cafe' started by Buckocaster51, Jan 20, 2020.

  1. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    I have an old one on my CJ7. Today it decided to not turn. I checked fluid level and since it was low, I added some.

    Probably stirred up something evil in the pump as now it won’t go up or down as well.

    So I will probably take off the pump and give it a good cleaning. I haven’t touched it in 4 years...

    It is cable operated. Cables run from an interior joystick through the firewall out to the pump.

    To remove the pump, the cables need to be disconnected at the pump. It has me baffled. I need some ideas.
     
  2. drf64

    drf64 Poster Extraordinaire

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    do you mean cables, as in electric cables running to the pump, or mechanical cables? if it is the former, you first of all need to sort through all of the wiring to look for shorts in the wire, and then look at the switches/solenoids, whatever you want to call them, on the pump. I had an old western unimount plow and the wiring is prone to shorts with age and use.
     
  3. Milspec

    Milspec Friend of Leo's Silver Supporter

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    I ran the same set-up on my '49 Willys CJ-2A decades ago. What I recall was the importance of choosing the right fluid...especially when it got really cold outside. I've seen people use ATF, synthetic brake fluid, etc....just depends on your situation. A fluid change sure couldn't hurt as they do break down over time and develop some suspension of rust flakes.
     
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  4. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    Mechanical cables
     
  5. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    When I was plowing a Friday it started out fine: up and down left and right. A pure delight to use. Then it stuck full left. Phooey! But it was angled in direction that allowed me to finish.

    Today I went out to touch up. Started out fine with the up and down. Then it decided to not raise

    Pump makes all of the right noises.
     
  6. mfguitar

    mfguitar Tele-Holic

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    Because nothing works I would review the electrical connections, you still have a 12V motor that runs the hydraulic pump.
     
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  7. mfguitar

    mfguitar Tele-Holic

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    OK, possibly if the fluid was really low you may have introduced air into your system, not real sure how to bleed that system but worth a look.
     
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  8. Milspec

    Milspec Friend of Leo's Silver Supporter

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    The only way to find a gremlin is to scorch the earth until he has no place to hide. Since it has been awhile since it was serviced, it is time to dismantle it and clean / repair / replace until that hiding place it obvious.
     
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  9. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    I have it in the heat tent today. Trying to get it warm enough so I don’t leave my fingertips on the metal.
     
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  10. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    57D07A89-5E78-44D4-91B2-9322AAB64B9F.jpeg

    The filter and fluid seem to be clean and not plugged
     
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  11. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    Hmmmm...install o-ring. Not an o-ring to be found. I wonder how much fluid has been squirting out.

    8216CE6A-0CC4-4369-AFD3-76F322870ED1.jpeg
     
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  12. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    There seem to be some in the official rebuild bag...

    C56C09F2-B39C-493C-A1A7-26AB3F4F42D1.jpeg
     
  13. getbent

    getbent Telefied Silver Supporter

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    OUTSTANDING!
     
  14. BobbyZ

    BobbyZ Doctor of Teleocity

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    Plow I had was a Meyer I got from a brother in law. An old thing that'd been cobble mounted onto several trucks before I pulled it off an old Chevy and cobbled it onto an old Dodge.
    The bro-in-law had some Meyer's hydrolic fluid and said to change it every fall or else. Of course I never changed it. And it worked great for the 3 or 4 years I had it.
    In 2,009 I moved off that lake place, (ex-wife stayed) and I gave the old Dodge to my brother along with the plow. It was then remounted on yet another pickup, another Chevy.
    My brother has had issues but started doing regular fluid changes and using fluid specifically for snow plows. Apparently the fluid changes help a lot.
    From what I've gathered over the years pickup snow plows are pretty sensitive to water and contamination in hydraulic fluid. ATF would be fine if they didn't have to operate in sub zero temps. Up here that's easily -20 and colder!
    I've even seen people use aircraft hydrolic fluid in them but I think if you buy the special stuff from the plow manufacturers and change it every fall you'd be fine too.
    We do use ATF in the plows I use now but those things have a huge resivor, big pumps, big filters and they're kept in heated buildings. Basically they're dump trucks with three plows, the main front plow, an "underbody" under the cab and a wing.
    With a pickup plow you've got maybe a quart of fluid with a little screen for a filter and very small passages for it to go through. Doesn't take much to cause trouble.
    After that you've got those damned Western cables and electrical problems to deal with.
     
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  15. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    since I have found no o-rings in places where there should be o-rings, I am assuming they are floating around some place.

    there was some black sludge at the bottom of the pump housing. ;)

    I used a turkey baster to suck 2.3 20oz pop bottles of fluid out of there.

    tomorrow it goes back together with new fluid

    I really don’t want to take apart the valve bodies...but I do hVe the gaskets to do it
     
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  16. MickM

    MickM Friend of Leo's Platinum Supporter

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    Between You and the pump, my money is on you coming out on top. Give 'er hell.
     
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  17. bondoman

    bondoman Tele-Meister

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    Well as a heavy equipment mechanic for the last 30 years the first thing I gathered here was.. You and just about everyone that responded is overthinking this. First thing here is the system your describing is about the simplest no nonsense tinker toy foolproof system there is. Two things could be going on here. 1 being the pump is no longer being turned by the 12v motor or PTO depending on your system or 2 the oil is not being sent to where you want it. Generally meaning a stuck relief valve. You could literally piss in your hydraulic tank and the pump wouldn't care so long as it has something to pump. In other words if the pumps not moving piss or oil its not moving cylinders. If the spool valve is not sending that piss or oil to where its suppose to its not moving cylinders. Its really that simple. On a side note as old as this pump most likely is I'd say its an old gear type. meaning its damn near bullet proof and you'd be hard pressed to kill it moving a plow blade. My guess is you got a piece of crap stuck somewhere up in that spool valve bypassing oil back to tank. Provided the pumps even turning.
     
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  18. Obsessed

    Obsessed Telefied Ad Free Member

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    I have a 20 year old 4 wheeler and the electric winch quit in me a few days ago. Both the plow and the 4wheeler are on fumes. I have a warm window to seek out the problem.

    I am getting older, so I am thinking of adding a plow to my CJ-7, which I plan on rebuilding the engine this summer. I keep debating which way to go.
     
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  19. Buckocaster51

    Buckocaster51 Super Moderator Staff Member Ad Free Member

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    The pump spins, of that I am certain.

    I will study up on that spool valve thingy.

    Thanks.

    BTW - I am NOT heavy equipment mechanic. Can you tell? :)
     
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