PTO MAINTAINANCE AND COLD WEATHER

Discussion in 'Car Hauler and Auto Carrier Trucking Forum' started by justcarhaulin, Jan 17, 2022.

  1. justcarhaulin

    justcarhaulin Light Load Member

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    Jul 20, 2015
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    Hallo carhaulers. Am having some hydraulic issues with my 2016 cotrell stinger. This happens whenever the temps are below freezing. Here are the two issues
    1. Pto engages but the cylinders won't move either up or down.
    2. Frozen cylinders. Not all of them.
    3. Pto engages and the cylinders move only on the headrack but not on the trailer.
    I've been using the electric back up to get the hydro fluid warmed up. This helps get things going after a while.
    Is there something or maintance I can do to help with these issues? Thank you and stay safe out there
     
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  3. Banker

    Banker Road Train Member

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    First thing I would do is replace both hydraulic filters.
    I change them every year as condensation gets in the filters and when it is bad the cylinders will act like you are experiencing. While you are under there doing the hydraulic filters replace your air dryer filter. (Drain all air first). I do all 3 filters my last service before cold weather hits. I also gradually switched over to the thinner 32 Hydraulic fluid from the 46 that it came from Cottrell with. You can buy it in a 5 gallon pail and mix it with what you currently have in it.
     
    Last edited: Jan 17, 2022
  4. Banker

    Banker Road Train Member

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    Side note that may not effect you but others it may. If you have an empty deck that struggles to come down you likely have rusted metal clogged up inside the post. My high rail once did this on the back top deck. It had holes at the bottom of the post that were designed to wash out the rust. Spray PB Blaster form the top of the post to the bottom and let it sit for a while. Then hose the rust/metal out from the top down and make sure the water is flowing freely.
     
  5. Hammer166

    Hammer166 Crusty Information Officer

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    In addition to what @Banker recommended, you might consider changing out the hydraulic fluid. It sounds like the entire system may be carrying water.
     
  6. mnmover

    mnmover Road Train Member

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    In the bottom of the outside upright tube, drill holes so the water can drain out. Grind down and slip plate the inner tube. Occasionally spray the inner tube with antifreeze so the water will not freeze.
     
  7. justcarhaulin

    justcarhaulin Light Load Member

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    Jul 20, 2015
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    Thank you all for the advice. I appreciate it. I've learned alot from this site. I think I'd better pay more attention maintance wise as my truck gets older.
     
    Tall Mike and BigBob410 Thank this.
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