Can anyone shed some light on this truck problem i am having.
We replaced the encoder sensor and the problem still persists. We then changed the pump controller with the traction controller and still no difference.

At this stage I was clutching at straws and swapped the ac pump motor outside 2 windings around, still no difference.

I have exactly the same problem with a AC hyster J2.00xm the only difference being originally the hyster threw up an error code stating it was an encoder fault, after replacing the encoder the fault no longer appears but pump is very slow.

Any advice would be appreciated, perhaps its something to do with the new encoders?