Hi all,

I have a Caterpillar M50DP which runs for about 15-30min, then will not move. The hydraulics still work, and the panel comes on, but the drive wheels stop working. The battery is fully charged, and the code I'm getting is F5. Looking on the back of the rear panel covering, F5 means "drive system failure, consult service manual".

Any idea on what might be going on?

Thanks!