Recent content by mechdriver

I'm actually guessing it's a combination of heat and vibration. since the circuit board is completely covered in epoxy it would be very difficult to remove the 'protecting' layer to get to the components. Back in the late 80's I worked in an electronics repair shop and we did, at times of...

Thanks for everyones help. I finally broke down and ordered the PWM control box. My machine is back in action.????

Thanks for everyones help. I finally broke down and ordered the PWM control box. My machin is back in action.????

I failed to mention that I did have to replace the joystick head. Thumb switch/rheostat died while I was working on everything else. I've called a local repair guy and he is going to take a look at it at first opportunity. Does anyone know what the going price for a replacement PWM is? As soon...

I've checked all the wiring and if there is a break or bare spot l can't find it. I've unplugged, cleaned and reconnected every connector that i can find and checked all ground points l can find. Still fails. Can the PWM be intermittent? Could it be hydraulic in nature? Overpressure? Bypass...

Problem not solved. Downloaded repair manual and spent last Saturday checking voltages on the PWM and could not identify any issues. Still fails periodically. When i got done with all the static checks Dat. It worked fine for nearly 20 minutes. After it tripped out the first time it was about...

First, thanks to all the post on here about aux hydraulic issues, I've learned a lot but still have an intermittent problem. I've replace both rod and base coils and cartridges and the right lever control, that totally failed. the aux hydraulics will come on but, momentary light on, and works...

New here and could not find any info on this with the search engine. Does anyone have any idea what it would take, cost wise as well as procedure to install, a heater/air conditioner unit in my 873c. I realize I would have to add the door and windows but since my machine is oil cooled would the...