Your Cat dealer doesn't want to mess with it because there's not enough money in it for him.
There's parts all over the country for them.
https://www.machinerytrader.com/parts/construction-equipment/search?partnum=5b5450&pst=starts
https://www.machinerytrader.com/parts/construction-equipment/search?PartNum=5b2681&pst=starts&btnPartSearch=Search
I'm only about 50 miles east of you.
Thanks for the help. Will call and place order today.
Click on the Discussion forum section and you'll find that the first thread in there lists suppliers from all over the country that other members have used for parts.
Since my brain is not retaining new information well this may not apply,but will add anyway.
The numbers in the old hard copy books may not be as many digits as the computer system is using. Something about adding 0 in what ever number needed to match the number of digits in new numbers.I believe the 0 should be in front of the other numbers,but hopefully some that really knows will respond.
Would also assume dealers that have old fossil farmers running steel tracks being much more familiar with these issues. Cause we keep everything for ever,and think it should still be repairable.