DFBluffton
Well-Known Member
HEQ members. Have a new to me Hitachi ex 120-2 that has arrived. I started a listing below of repair support questions from the forum experts here...
Prior owner said Hitachi was diagnosed as needing a new computer and possible main pump rebuild, due to operating a little weak. Seems to me to operate pretty well except for the frozen pins in tracks, it binds so hard machine stops, so first trying to free those up. Also, where is the diagnostic plug to short the wires?
1. Smaller computer on top has no lights on it, looking for wiring diagram help and fuse support ec.
2. Has manual throttle, works good, seems to be from the above computer being dead, is there voltage to test stepper motor?
3. Has a manual temperature gauge, maybe the same as the throttle above from computer dead
3. Third light down on display console lights up once RPMs go up. looks like a flow-down arrow indicator.
4. Pretty good leaking bucket cylinder.
5. Track chain pins are frozen bad, binds up and stops machine from tracking. Guessing powerwash and then Kroil to try and free?
Prior owner said Hitachi was diagnosed as needing a new computer and possible main pump rebuild, due to operating a little weak. Seems to me to operate pretty well except for the frozen pins in tracks, it binds so hard machine stops, so first trying to free those up. Also, where is the diagnostic plug to short the wires?
1. Smaller computer on top has no lights on it, looking for wiring diagram help and fuse support ec.
2. Has manual throttle, works good, seems to be from the above computer being dead, is there voltage to test stepper motor?
3. Has a manual temperature gauge, maybe the same as the throttle above from computer dead
3. Third light down on display console lights up once RPMs go up. looks like a flow-down arrow indicator.
4. Pretty good leaking bucket cylinder.
5. Track chain pins are frozen bad, binds up and stops machine from tracking. Guessing powerwash and then Kroil to try and free?