My father has an OC46. The engine is in need of a little refresh. My question is whether an in-frame rebuild can be done on the Hercules 3 cyl diesel engine in the OC4
Thank you.
 
The engine is some version of a DD-130 Hercules. What do you have in mind: new sleeves and pistons or a rering? Also get the information off the engine as there are DD 130 & DDH 130 engines. The lower ends are way different! Me I prefer to take the engine out so everything can be checked and that includes getting the block hot tanked or cleaned in a thermo clean oven system. Do you have a shop manual? Oliver did issue a shop manual for those tractors and I would suggest that one be obtained from the museum in Charles City. More questions?
 
The 130 cube engine came two ways - with sleeves and with no sleeves. That goes for the GO130 gas engine and the DD130 diesel. So, all depends on what condition the bore is. If the bore is bad - Hercules sold oversize pistons up to .060" over but you'd need to yank the engine to bore it. If it has sleeves - and you can actually find new sleeves somewhere - you can renew the bore without pulling the engine. The sleeved block is #26102222D (gas and diesel). The block with NO sleeves is #261011D (gas and diesel).
 
Thanks guys. He does have a manual. Just in the thinking about it stage right now really. Trying to figure out a strategy.
I think it is mainly a compression issue. Won"t start without ether. Maybe just re-ring?
Thanks
 
Thanks for those casting numbers. If he starts looking for bearings it is going to make a difference if he has a DD or A DDH crankshaft. Do you know the casting number for those> He said it was a diesel so most likely it has sleeves. He could also bore it for the more popular 4-3/4 inch bore as well
 
The Hercules parts book shows the gas and diesels coming with sleeves or without sleeves. It was optional for both gas and diesel. The book shows DD versions in B,K,L,H,O,I,J,M,N,A,and C. Rod bearings show as just one # for all - 43081B and they come in standard, ..020" under and .040" under. Piston pin bushing is # 140121A. Main bearings differ by engine model. Diesel DD130, 149, 169, 173, 198, 226, 260, 298, and 339 all take 285102B for front, rear and intermediate. Thrust bearing for diesel DD130, 149, 169, 173, 198, 226, 260, 298, and 339 is # 285110B. All mains available in standard, .020" under and .040" under. Some are copper-lead and some are tin.
 
No, we do not know the casting numbers yet.
This was however, an OC-46 off of a Lake Erie Ore boat. It was used to clean out the corners of the holds prior to skid steers. Larger equipment was used to clear the majority of the hold. Dad bought it approx 1994 when it was taken off the boat. It is really in amazing cosmetic condition. Mechanically I think she was worked hard and put away wet.
Thanks again,
Noel
 
JD,
Is the book you are quoting from still available?Maybe off the internet for downloading? We would like to get one for our OC for future reference.
Thanks, LOU
 
How is this project going? I have an OC46 with same symptoms, but with a GO130 engine.
Wondering how much work to remove the engine? Can the loader stay on it to remove the engine?
 

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