Converter over heating, has plenty of power but average work will cause a overheating issue, it has the filter on top with the 6 bolt cap, what filter number and gasket set do I need to replace it. What do I need to know about any slave pump?
If your machine is a 75A-prefix you're going to need a Parts Manual (or acces to someone who has one) because there is no parts information for that model in the online service system. The Parts Manual for machines with S/N up to 75A1467 is UE035262. Can't see one anywhere. For machines from 75A1468-Up it is UEG0034S. There appears to be an electronic copy on scribd.com that you can download if you upload something in exchange for it.
Your machine is old enough to require the help of the experts at: www.acmoc.org It's the Antique Caterpillar Machinery Owners Club. Somebody will have a parts manual and experience with the powertrain. It's an excellent club to join...I've been a member for quite a few years now.
I would check the transmission cooler it may be internaly clogged