Hello all. I am new to this forum and posted the following in a new thread. However, I probably should have posted here. I assume the 40F and 50F are pretty close to the same as far as the mechanics and electrics.
I have a very used but well running JLG 50F with a Wisconsin gas motor that does not want to drive well. All boom movements up and down, etc work great just moving it requires me to tow it with my backhoe. The first problem is that it will not move up even the slightest incline. I know the high idle does not work or the drive switch. I even revved the throttle by hand while I had someone else in the bucket driving and did not make a difference so I suspect it is the valve that allows more pressure to the drive motors. I tried to download some schematics but they were too fuzzy to read. I bought a manual but who knows when it will actually get here. I imagine that once I have the proper diagrams, I can troubleshoot the electrical issues.
The second issue is that one wheel will spin if not on completely flat ground. I have been told I can adjust some valves to get "posi-traction" to work but have no idea of what those adjustments should be.
If anyone has any ideas or directions for these adjustments it would be greatly appreciated. I apologize if these issues have already been posted, I tries to search through this thread but didn't find exactly what I was looking for. Thanks in advance,
Scott