Oliver OC3

Pintobill · Jun 14, 2012

I have an Oliver OC3 crawler-loader that has an Oliver super 166D power unit installed instead of the gas unit originally used. I was told it is a Waukesha four cyl. diesel. It has a cracked head. I would like to get a replacement, but don't know which engine this is. Any ideas?

Larry NEIL · Jun 14, 2012

Phone Landis Zimmerman @ (717) 738-2573.
He IS the Oliver Cletrac man!

rustyplow · Jun 15, 2012

166 power unit is the same as the 66 tractor.

LJD · Jun 15, 2012

I assume you know that OC3s came with Continental ZD-129 diesels IF diesel. In the crawlers, the Waukesha was only used in the OC6 (six cylinder, not four).

Hough payloaders used basically the same engines as your Oliver 166 power unit.

If it was mine, I'd put a Hercules gas engine in it rather then source out scarce diesel engine parts. I have an OC3 with the Continental disel and also an OC4 with the Hercules diesel. Parts for either are near impossible to find and same goes for the Waukesha diesels.

I'll assume the head from the more common Waukesha 180 diesel will fit, but I'm not 100% sure.

Pintobill · Jun 20, 2012

Figured it came with continental originally. Thanks for the info.

Pintobill · Jun 20, 2012

Thanks, will check it out!

Pintobill · Jun 20, 2012

Thanks, will give him a call.

Oliver OC3

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