Re: Oliver OC-3 crawler
[QUOTE=Rick Keith;634487]Okay, there's an Oliver OC-3 with a dozer for sale up here, and I have a few questions. (I'll post pictures later . . . this computer doesn't have an image editing program that will re-size pictures.)
The track frames and undercarriage were made for years after Oliver stopped making Cletracs - to be use for mining equipment. Some was made by CP/Atlas Copco and Clark so maybe parts of the undercarriage were robbed off a newer piece of mining equipment. I've got a bunch of new rollers here that took of one for my OC3 and OC4.
Price depends much on condition and options. A late HG is exactly the same machine as an OC3. Both have the IXB3 Hercules engine with a water pump. A good crawler with an inside-blade Anderson dozer can bring $3000. If rough, sometimes only $500. Now, if it has the option aux. transmission it's easily worth an extra $1000. Keep in mind that HGs and OC3s were NOT designed to push dirt. They were made for row-crop farm work and are way too fast in 1st gear to be very useful with dirt work. So, Oliver offered an aux. transmission kit to slow it down and used a Ford Model A three-speed car transmission. I have two Cletracs with the setup. When the OC4 came out and replaced the OC3, Oliver offered the option two ways - either a trans to slow things down - or a reverser. I have an OC4 with the reverser.
The machine will push dirt without the aux, but you wind up running lugging the engine at low RPMs and slipping the clutch a lot.
In regard to problems? They were the Model T of the crawler world, so many got cheap quick repairs over the years, parts stuck in that don't belong, etc. No severe design problems except - like I said - too fast in first gear and the plantary bolts fall out sometimes if not checked once in awhile. You also MUST use the correct oil in the transmission and NOT use modern gear oil with EP additives. If you do, the steering brakes plug up and stop working. The three speed transaxle was made by Clark Company and was also used in Avery tractors, Generals, Case-Terratracs, Bombadiers, etc.
As far a learning how to run it? Very easy. One thing that might take a bit of patience is working on steep hills since there is NO foot brake (you use the steering levers).
Many places sell the operators and shop manuals. Also, Zimmermans in Pennsylvania specializes in parts for all Cletracs as well as all the books.