rrlund

Well-known Member
I just ran across this ad for an OC4. The seat and dash look like an OC4 alright,but the hood and grill look like an HG or OC3. Did they make a few real early on that used the HG style grill instead of the Fleetline grill? The darned thing has OC46 decals. If somebody has cobbled that hood and grill on there,they did a pretty decent job of it.

cvphoto13515.jpg

CL Ad
 
That is the early OC4 with the 4 cylinder engine. It has the loader sub frame for the dozer to mount on, a good setup. Not a bad price either!
 
Would that be "real early" then? The early four cylinder's I've seen had the Super style grill and open side panels on the hood like this one. The pictures in the ad show an HG style grill.

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Well, probably not. It says OC 46 on the hood so with that and it having the loader sub frame it was likely built as a loader. Then modified to a dozer later. The front of loaders usually have a hard life so that was likely changed when the conversion was done.
 
The grill sure fits nice around the front pump. That doesn't look like it was cut out. The bar follows the contour.
 
It is missing the radiator side covers and lower engine covers. The grill is cut out to fit around the pump. On my two the grill is further to the front and covers the pump. So I don't think the grill is original. My Oliver parts book for the 4 cylinder early model shows the same grill as yours which was also used on the first of the 3 cylinder models. That blade also looks like a pickup truck snow plow not a real dozer blade. That would be a 1957 or early 58 model.
 


That, as several have stated, is an early (1957) OC4 powered by the 4 cyl. engine. They used the Fleetline grill, hood side panels to match the other Olivers at that time. I have a 1957 4 cyl. OC46 with the same styling. It appears that the air cleaner inlet and radiator cap cover are missing from the hood as well as the front/bottom section of the engine side cover.

The OC46 style sub frame is there, also the hydraulic tank and control levers. The factory brochure for the Series 2 OC4 shows a dozer option with the same high mounted cylinder on the OC46 sub frame so it is very plausible that this machine came that way from the factory.
 
Here's a picture of it from the front. You have to admit,they did a great job of making the grill fit around the front pump.

cvphoto13615.jpg
 
It has none of the features of the series B. The blade is much lighter than what Oliver used. The high mount cylinder is similar to but not the same as what Oliver used.
They did do a good job putting it together though.
 
The sheet metal from a HG or OC-3 will fit on an OC-4 fairly easy. I learned this a few years ago when I purchased an early OC-4 on line. When I got it home, and started checking it out, some things didn't add up. Transmission was not right, along with some other things. Closer inspection turned out that it was an OC-3, with early OC-4 sheet metal put on it.
 
What did it have for a seat,the pan seat or the big square padded seat like the OC4?

I had a chance to buy one a few years back. It was a 4 cylinder diesel,but it had the square industrial grill on it. I thought that was an odd combination. He had a heavy AC Anderson blade for it too. I passed on it. He had the engine completely disassembled and the tracks were pretty rough.
 
The one that I had used the OC-4 bench seat, dash, and controls. The undercarriage, motor and transmission were from an OC-3. Not exactly what I was looking for, so I sold it after a short time.
 

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