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980c steering hydraulics issue

Discussion in 'Wheel Loaders' started by catfixer, May 4, 2013.

  1. catfixer

    catfixer Well-Known Member

    Joined:
    Apr 23, 2013
    Messages:
    168
    Location:
    Pittsburg, KS
    I had some guys I work with pull the cylinders off of our 980c to get resealed. rather than just unhook the lines at the cylinders they removed the junction blocks. Long story short nothing was marked and they hooked up the lines wrong. The transmission filled with hydraulic oil so I assumed they backflowed the pump and blew the shaft seal. Removed the pump last night and sent it to the pump shop only to find out that it is functioning properly. Is it possible that the oil bypassed the seal without damaging it and then stopped bypassing when the lines were put back on the right way. I'm bout stumped.
     
  2. Bob/Ont

    Bob/Ont Senior Member

    Joined:
    Sep 19, 2012
    Messages:
    1,605
    Location:
    Ontario
    I wonder if they hooked a steering or another hyd line up to the trans.
    Can you run it long enough to see if the steering is working?
    Later Bob
     
  3. catfixer

    catfixer Well-Known Member

    Joined:
    Apr 23, 2013
    Messages:
    168
    Location:
    Pittsburg, KS
    I didn't see any lines going to the tranny that could have been hooked to the cylinders. the steering pump is getting resealed now and i will reinstall it. The guy at the pump shop said something about there being a secondary steering pump. I don't know if there is one but I looked all over that transmission and haven't seen one.
     
  4. rare ss

    rare ss Senior Member

    Joined:
    Apr 1, 2011
    Messages:
    460
    Location:
    Western Australia
    if you look on the front output shaft of the drop box it will be mounted up to the idler gear (if it's fitted) as its driven from the driveshaft speed (works while your rolling with no engine power)