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  1. J

    komatsu d21 bottom roller

    I have a komatsu d21a-5 and was wondering if the bottom rollers are rebuildable? I currently have one with the flange broken on the inside and outside. i was wondering if i could just replace the part with the flange? please share any experience or thoughts. i have replaced a different one in...
  2. J

    komatsu d21a-5 hydraulic problem

    It turned out to be a bad seal in one of the lift cylinders. i let the cylinder bypass pressure for quite a while and sure enough one cylinder got nice and hot at the location of the seal.
  3. J

    komatsu d21a-5 hydraulic problem

    Thanks, I am trying to see if I can isolate the problem to one of the cylinders.
  4. J

    komatsu d21a-5 hydraulic problem

    will do. thanks for the reply.
  5. J

    komatsu d21a-5 hydraulic problem

    Hello, My machine suddenly has a problem in that the blade will no longer stay in the air, drops to the ground in a few seconds while the machine is running. The hydraulics will hold the machine off the ground when then blade is pushed down so the problem is only in one direction. i suspect that...
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