Hi there. I have a hitachi ex 100-3 and have very poor performance. I can only move 1 movement at a time. If I bring in a second movement it just slows to nohing. Also if I bring in the dipper arm it comes in very slowly and then when it gets vertical it stops for a few seconds and then continues in slowly. This problem started out intermittent but now is permanent. I am getting 24v at both pump control solenoids . I am getting 1.0v from signal wire of angle sensor while moving any movement and if I bottom out any ram and hold lever I only get 1.5v. Also if I unplug pump control solenoids the pump will load engine and nearly kill it. Any help would be great fully appreciated.
Hitachi ex100-3 bad performance.
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