Anyone have a guide as to what year a OC3-42 Serial # 9WH 384 was produced?? I bought an old HG and a OC 3 for parts for my HG rebuild and luckly got a perfect set of bull & pinion gears along with many other good parts. Also got a perfect set of tracks but have the 6" pads on them, I have a good set of 10" pads that I am going to put on the good chains. The pad rivets measure 17/32........1/2" bolts would be a little sloppy so I am going to use 9/16" sae grade 8 bolts, will have to ream the holes a little. Has anyone else changed pads and what did you use to fasten them? Thanks, DeLong1
I would say late 1952 because in 1953 and 54 they were numbered in the same fashion as the wheel tractors and in 1955 the number prefix starts with 11.