dump bed ???

Discussion in 'Trucks [ Eighteen Wheelers ]' started by earthmover, Oct 28, 2011.

  1. earthmover

    earthmover Medium Load Member

    563
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    Jan 27, 2009
    castalia , north carolina
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    on my freighliner dump truck the bed goes up just fine but comes down slow do anybody know how to adjust this on a dump truck?????fluid level is fine i have a clear sight tube and i have bleed all the air(i think) out of the system before....
     
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  3. Swamp molly

    Swamp molly Bobtail Member

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    Feb 20, 2011
    Carrolltown pa
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    Are they air controls or cable.
     
  4. Gambi80

    Gambi80 Medium Load Member

    How's the vent on the hydraulic oil tank?
     
  5. Working Class Patriot

    Working Class Patriot Road Train Member

    12,683
    23,165
    Jan 17, 2008
    Wherever and Whenever...
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    Yep....That's the main cause....Plugged vent......
     
  6. sixpackbill

    sixpackbill Light Load Member

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    Oct 6, 2010
    hamilton on.
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    yep:biggrin_25521:
     
  7. earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    it has a pump mounted under the truck that runs off the pto and i have a lever that is air controlled that lifts the bed and lower the bed...the vent if im not mistaken is the cap that goes on top of the oil tank..has the holes in the bottom with some sort of stuff in it..ill check that tomm and see if i can clean it or just replace it...this thing just takes to long to go down now..thanks for the info guys ill check the cap ..mike
     
  8. Gambi80

    Gambi80 Medium Load Member

    Another thing to check is the slide on the pto pump, make sure it's moving the full distance. Have somebody in the cab working the up/down lever and you watch underneath to make sure. Sometimes just a shot of WD40 once in a while helps.
     
  9. earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    the slide is the thing that the cable is hook to right???? i will check that also....thanks mike
     
  10. Gambi80

    Gambi80 Medium Load Member

    If it's air operated it'll be a shiny cylinder about 1" in diameter on the left side of the pto pump...it should slide about 2-3"....(this is how mine is, yours could be different). Sometimes that slide gets crapped up and either slows the hoist or stops it.
     
  11. earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    ill look at that cause that's what i have....that has the cable hooked to it that runs to the bed..thanks mike
     
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