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Air in hydraulic oil

Discussion in 'Dozers' started by shaunw7708, Oct 9, 2013.

  1. shaunw7708

    shaunw7708 Well-Known Member

    Joined:
    Sep 11, 2013
    Messages:
    54
    Location:
    Saskatchewan
    Tilt cylinder is bypassing, so I assume that is my problem. Will have to get it rebuilt, looked at the shop manual and I don't have the tools to pull it apart.
     
  2. shaunw7708

    shaunw7708 Well-Known Member

    Joined:
    Sep 11, 2013
    Messages:
    54
    Location:
    Saskatchewan
    The tilt cylinders don't get hot after a few hours use, I reread the shop manual on how to repack the cylinder and other that a torque multiplier to get the 2000 lbs torque on the head bolts, I shouldn't need any other special tools. Are there any special tricks to taking out the cylinder rod, or do I just pull it out till it stops, then turn it out of the nut. Doesn't really say how tight the nut is on.
     
  3. rare ss

    rare ss Senior Member

    Joined:
    Apr 1, 2011
    Messages:
    460
    Location:
    Western Australia
    the nut will be FT (f&^%Kn tight) but if you want a quick fix just pull the head and rod out and change the piston seals you will need a ram bed to remove the cylinder piston (nut) from the rod correctly.. one good thing about Komatsu gear is they have a ring of bolts holding the piston head onto the rod rather than a huge nut so you can fix them in the paddock with ease