When I get to the job, the fault buffer is completely filled with mostly 01 08 drive /tacho faults with a few 00 36 faults. I can clear buffer and it will run for hours flawlessly and not log any faults. When I go back a few days later the buffer is filled again. The maintenance guy says the unit has problems leveling but I've never seen it. I see the 01 08 fault can be caused by the tach, the brake not picking, the load weigher, etc. Has anyone had a similar issue and what is the most probable cause?