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    PC50UU-2 issue. Need help

    today I was using my PC50UU-2 and I lost the ability to side shift to the left, lift the main boom, and lid the stick. I can go right and down on both functions. Bucket goes both ways, blade works normal, and swing works normal. Also both tracks function normal. I just can’t lift the boom...
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    Engine Rebuild 4D84 vs 4D84E

    I am wanting to rebuild my 4D84-2A Engine for my Komatsu PC50UU-2 Excavator. Maxiforce sells a rebuild kit for the 4D84E-3C which shows as a 4TNE84 on their website. I would like to know if this rebuild kit would work for my 4D84-2A? Also does anyone have a service manual for the 4D84 engine...
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    Service manual for Yanmar 4D74-2A Diesel engine PC50UU-2

    I am wanting to see if someone can send me a manual for Diesel engine 4D74-2A. I am wanting to possibly rebuild this engine myself as I am picking up a excavator that needs some motor work done.
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