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Case CX210D – pwm problem

illy ยท 2024-07-22 14:48

Hello, I'm trying to repair wierd hydraulics on this machine. On idle, in neutral, both pumps are on 1000 PSI, engine on 40% load. Closing bucket, first freefalls, then stops for a second, then stars going till fully closed. Dipper pretty much the same. Looking at the PWM outputs to pump control solenoid valves and other, I can see that the target value is changing but the actual doesn't and it's always 1069 mA. Any toughts on this?

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