Here are a couple "Old Macks"
This first one is a M-30 quarry truck, late `60's vintage I think. This picture was taken the day it was leaving our plant after being sold on an Iron Planet Auction. I believe the main problem other than wear and tear was the flex plates attaching the engine to the Allison transmission either broke or the bolts for them failed. Spent many hours working on that one over the years along with several others of these from M15's up to the M65's we ran at various sites in New York State.
This one is a little older! It was a project the president of the company assigned to our shop. Really wish I had some before pictures! It was cut out of a hedgerow in western New York where it had been parked for many years. I could probably write a book on the project. The only original sheet metal left I believe is the hood. One of the shops welders used the rusted original pieces as templates and with little more than a jigsaw, torch, and a few hand tools made something that while not museum quality looks preety good. My self and another mechanic were tasked with making it run, it does still have the original 4 cylinder gas engine. We were lucky and our boss found a good used crank case and crankshaft that needed the bearings hand fitted. Other things were a little more of a challenge!