UPDATE
I’ve been operating the roller and trying to figure out why the controller does not control the speed or direction of the machine. In doing so, the roller slowly started losing drive. The steering and vibration still function perfectly but now the machine rarely moves in either forward or reverse. Once in a while, when started, it will jump up and down like it’s possessed or more probably trying to go forward and reverse at the same time
I’ve been reading the manual and going through the troubleshooting steps for the drive system
1. The tow/bypass valve works normally
2. The drive control cable works normally
3. I have not been able to test the drive pump and relief valve because I am waiting for an adapter for the pressure gauge (I suspect the answer lies here)
4. I have made sure the drive motors are not bound and turn freely
5. I have not checked fluid flow through the drive motors because I don’t want to make a huge mess and it doesn’t make sense to do so until completing step #3
While checking, I have disassembled the two tandem mounted pumps (exciter and drive) and everything looked normal to my eye
My question is this- if there is a problem with the relief valve in the drive pump, is that fixable? I don’t see any mention of that in the manual (see attached)