I have a friend that has a Cat D5G s/n RKG02047 that has an issue. The issue is that as he is operating the dozer it will shift into low and will not upshift without shutting the engine off and letting it sit for a few min. and then crank it back up. It will then run fine for a few min. and then act up again. There are now lights that come on or flash when the problem occurs and no codes as he can tell. Anyone have any ideas on this problem I'm at a loss.
He mite try pulling the filters, open them up and take a look, kinda sounds like the flow may be restricted
could be mice or some aminial eat up wires, new one that did that but it would not move .
How did you check for codes if any?
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