I appreciate everyones input. I've gone from worrying to accepting that I have to diagnose and fix.

I will only have a couple hours Monday in which to push the truck into my friends shop, drop the pan, and learn what can be learned. Everything I do from then on is going to have to be done around his work schedule, and to be honest, I would like to exclude his involvement as much as possible.

I know that I need to check the pan for metal shavings/grit etc. but being rather inexperienced, it would help if I had a 'step by step' of what to check, how to check it, and what to expect so that I don't spend that two hours scratching my head.