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Recent content by Biglou101

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    KVGT issue

    Machine came back after working fine for a week, doing the same surge and had a fault for ca2554 exhaust back pressure sensor in range low. Surging again, replaced sensor and cleaned tube to manifold. Code came back for turbo position fault and machine continues to surge.
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    KVGT issue

    My pressure seems to be about 15 psi below minimum, is there a way to check the relief valve or will whole pump need to be removed.
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    KVGT issue

    PC228USLC-10 Slightly different Than OP but I thought I could use most of the tips and Hints.
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    KVGT issue

    PC228USLC-10
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    KVGT issue

    1.2 MPa converted to 174 psi is the minimum kvgt drive pressure according to the standard values and specifications I found in the service manual. We have two gauges setup exactly like the Komatsu procedure recommends. They are on the control and drive to KVGT. We have not deadheaded the pump.
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    KVGT issue

    Vetech, We tried this earlier this morning with no luck, the code is no longer active but the VGT continues to surge almost kind of like and idle hunt. very strange, one thing that did change is with the screen cleaned completely is that the booster pump pressure is only at 158PSI where a...
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    KVGT issue

    Did you ever resolve this issue? We were lead to replace a turbo assembly on the machine and issue is still present, checked oil drive and control pressure. Have 160-180 psi, the vgt is constantly cycling back and forth and the pressure fluctuates. All engine sensors have good readings through...
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