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Recent content by postmortem_42

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    Yanmar Vio55-5b, tracking issue and blade drift

    agree on swivel seal leakage/bypassing
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    PC28UU-2 Swivel Joint Seal Kit

    Anyone know where I can get this kit? Seems to be available for all other PC series, but cant locate one for PC28. It is the same kit as for PC28UU-1. Thanks
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    Komatsu "Four" (safety) System

    just make sure you maintain a feed to and return from the junction block.
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    Komatsu "Four" (safety) System

    only three go the the bypass, the fourth (closest to back) should be wired to key on and not to bypass switch. This solenoid is associated with the PCP feed and should be key on wired. All others control boom, arm and offset and have both and in and out of the block.
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    Komatsu "Four" (safety) System

    good luck, you will get it figured out
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    Komatsu "Four" (safety) System

    I have two buzzers, I can simply disconnect the plugs to shut them up. I am installing oil pressure and WT gauges and will ultimately delete the dashboard. The flashing red light with Japanese writing is annoying....
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    Komatsu "Four" (safety) System

    correction SN# 10274
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    Komatsu "Four" (safety) System

    mine does not have a safety lever, it is a UU2 SN 1264,but no "dead man" lever. I believe that if you run a toggle to solenoid no.1 (one of the smaller ones on end that controls incoming pilot hose pressure) you can kill the controls, hence a dead man. Killing 12V to that solenoid will make...
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    Komatsu "Four" (safety) System

    no diodes, no fuses. using the power from the override switch at 12V and 16AWG wire. No real current running through them. There is no downside to powering all the time as that is the normal way they work if the safety system was operational.
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    Komatsu "Four" (safety) System

    You cant bypass the aluminum valve body as others state. This valve body that solenoids are connected to regulates pressure from the PCP and bypassing will either burn out your PCP if it lasts that long or blow hoses on both the feed and return sides going to your pilot controls. I learned more...
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    Komatsu pc28 cab limit problem

    You cant bypass the aluminum valve body as others state. This valve body that solenoids are connected to regulates pressure from the PCP and bypassing will either burn out your PCP if it lasts that long or blow hoses on both the feed and return sides going to your pilot controls. I learned more...
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    Komatsu "Four" (safety) System

    Thanks!!!!!
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    Komatsu "Four" (safety) System

    John Do you have any information on PC-28 UU-2 system? i am looking for exploded view of the aluminum valve block the pilot hoses and solenoids go into? Thanks
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    Komatsu "Four" (safety) System

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    Komatsu "Four" (safety) System

    Mike_27, when you say unhooked, just unwired all four?
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