bobcat 320 mini excavator
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- bobcat 320
SSdoxie
Elite Member
left arm rest down and locked in place? This arm rest has to engage a switch to turn on the hydraulics for the joysticks. Tracks and blade are mechanical linkage not affected by the arm rest.
Yes the armrest switch is working.That was the first thing i checked.Dont have a wiring diagram so not sure if it has any relaay switches The machine wont track if the arm is up so that comfirms the switch is working
SSdoxie
Elite Member
Check your ISO/SAE joystick pattern selector control. Make sure it is not half way in between.
HI
I sent you a private message last night wondering if you found the problem. Just yesterday I started my 2000 331 and nothing would move with the digging functions. The blade would raise and lower and it would go back and forth. SS mentioned the switch. Today I went and took apart the left case to get to the micro switch. I traced the small cable to a connector. I took it apart, it looked perfect. Now I have the micro switch and a short cable that I can test. I am no means a mechanic, I do believe in good old common sense. I put an analog ohm meter on the connector coming from the switch. Arm rest was in the down position. I could see a resistance across the leads. I would have thought when in the down position I should have seen a short across the meter. Just some resistance. I put the arm rest up, now I see a short. That seemed backwards to me. I raised and lowered the armrest several times, still the same thing. I pugged the connector back together and armrest locked, nothing. I did the procedure again, this time I took some carb cleaner and sprayed the micro switch, it looked pretty nasty in there. I mentioned common sense, I was wondering, should I spray this with carb cleaner, I did anyway. I then sprayed WD 40 on the switch. The meter had the same reading, resistance in the down position and short in the up position. I still thought this was backwards. As the meter was still attached, I was raising and lowering the arm rest and something changed. I was now seeing the short in the down position, the resistance changed to the up position. I could not believe what I was seeing. I had not been drinking, but it sure changed. I put everything back together and gave it another try. BINGO everything is working fine. I will keep watch of the switch and replace it if I need to. JENXY, you probably tested it properly, I just thought I would pass this on. In Vermont.
I sent you a private message last night wondering if you found the problem. Just yesterday I started my 2000 331 and nothing would move with the digging functions. The blade would raise and lower and it would go back and forth. SS mentioned the switch. Today I went and took apart the left case to get to the micro switch. I traced the small cable to a connector. I took it apart, it looked perfect. Now I have the micro switch and a short cable that I can test. I am no means a mechanic, I do believe in good old common sense. I put an analog ohm meter on the connector coming from the switch. Arm rest was in the down position. I could see a resistance across the leads. I would have thought when in the down position I should have seen a short across the meter. Just some resistance. I put the arm rest up, now I see a short. That seemed backwards to me. I raised and lowered the armrest several times, still the same thing. I pugged the connector back together and armrest locked, nothing. I did the procedure again, this time I took some carb cleaner and sprayed the micro switch, it looked pretty nasty in there. I mentioned common sense, I was wondering, should I spray this with carb cleaner, I did anyway. I then sprayed WD 40 on the switch. The meter had the same reading, resistance in the down position and short in the up position. I still thought this was backwards. As the meter was still attached, I was raising and lowering the arm rest and something changed. I was now seeing the short in the down position, the resistance changed to the up position. I could not believe what I was seeing. I had not been drinking, but it sure changed. I put everything back together and gave it another try. BINGO everything is working fine. I will keep watch of the switch and replace it if I need to. JENXY, you probably tested it properly, I just thought I would pass this on. In Vermont.