know the age of my old oliver oc-4

[mychelthesnowman]

I have a old oliver and i'd like to know the age of it,the model number on the left hand side is oc4-3d68 and the serial number is 2wd-822 and the engine is diesel,please supply any info and the place to get the overhaul manual
thank-you
mychelthesnowman

[Ray]

Hello,
The year your OC-4 was built is 1959.
OC-4 is the model, 3D stands for 3cyl diesel, and 68 stands for 68 guage, meaning if you measure from center to center from one track to the other that tells you what guage width it is.<p>I have overhaul  shop manuals call me at 717-738-2573