Just purchased a 2008 komatsu ck 35 with a hydraulic issue, when the machine is cold every thing works as intended. But after it starts to warm up the control of the bucket moves very slowly. From full scoop to full dump takes a long time, like a minute ish. Just curious if anyone has seen this issue or know a good place to start. Thinking the control solenoid might have some resistance issue and causing it to heat up and not work properly. Does not appear to be a pump issue as the lift arms still move fast with full pressure and it still tracks strong first and second gear. Could dirt in a valve cause this issue? If so why would it work fine cold but then progressively get worse? Hydraulic filter was changed 3 months ago, not sure about a complete system flush. Any help appreciated TIA.
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