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TS14B Hydraulic Tank Overflowing

Discussion in 'Scrapers' started by JustinG, Mar 5, 2018.

  1. JustinG

    JustinG Well-Known Member

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    I have a TS14B that has an issue with the hydraulic tank overflowing after about 40 minutes of operating. I've already replaced the hydraulic filter & cleaned screen for hydraulics. I ended up putting a new pump and suction lines on it a few days ago. I pumped the tank out to see if there was another screen it the bottom, but couldn't really tell with the tank on the machine. The hydraulics work fine when it's first being used and then hydraulics get really slow and tank starts to overflow.
    I'm leaning towards a suction problem, possibly in the tank. Anyone ever had this happen? Any ideas on what all to check?

    Thanks,
    Justin
     
    bccat likes this.
  2. RZucker

    RZucker Senior Member

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    I never worked with the B's, Was the tank meant to be pressurized with a pressure/vacuum relief valve? Had a Wabco 339 doing that once and the tank pressure relief valve was the problem. Proper pressure in the tank speeded things up too. If the Wabco would only steer to the right... Low tank pressure or a plugged suction screen was usually the problem.
     
  3. JustinG

    JustinG Well-Known Member

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    The hydraulic tank is vented and the oil overflows out the vent.
     
  4. RZucker

    RZucker Senior Member

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    Yeah, you have some kind of suction issue. I'm just not sure what it is. You're absolutely positive the suction strainer is spotless? I've seen multi later screens that looked clean outside but were still plugged. Not saying that's what you have, just an idea. Worked on a Trojan loader once that must have eaten a shop rag... or two. The screen looked like it was packed with felt.
     
  5. Tinkerer

    Tinkerer Senior Member

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    Are there any hoses in the circuit that may be collapsing ?
     
  6. JustinG

    JustinG Well-Known Member

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    Diesel Mechanic, Cummins
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    I had to have lines made for the pump. The line to the steering section of the pump is all new. The suction hose for the other hydraulics was reused, I removed it and it still looks good inside. Maybe, it could be collapsing?
     
  7. mikebramel

    mikebramel Senior Member

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    What kind of clamps and did you put new orings on the flanges
     
  8. JustinG

    JustinG Well-Known Member

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    Lines are flange style and have all new orings
     
  9. Tinkerer

    Tinkerer Senior Member

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    Try replacing that suction hose even though it looks good. That removes any chance it is the problem.
    Does the tank level drop after the machine is shut down for a while ?
     
  10. JustinG

    JustinG Well-Known Member

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    Diesel Mechanic, Cummins
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    I'm getting a hose made today. The level goes back to normal when machine sits and hydraulics will work for about 35 minutes.
     
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