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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum

Oliver 1850

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02-17-2021 08:29:20

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Hello everyone . First post.
looking for advice . I'm working on an Oliver 1850. First issue is the engine, a Waukesha straight 6 gas engine. Doesn't have the power it did years ago . I did a compression test. I have 180psi on 4 cylinders and160psl on 2 other. Is this considered acceptable ?

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02-19-2021 10:52:03

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 Re: Oliver 1850 in reply to 1850joe, 02-17-2021 08:29:20  
We just had a long thread on this. Are you shoving it all the way in, turning the PTO output shaft and trying again?



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02-20-2021 05:05:28

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 Re: Oliver 1850 in reply to scootergmc, 02-19-2021 10:52:03  
Thank you. Shaft is out. Tried everything. Finally resorted to the impact gun. It came right out. It was the last resort, because it seemed the most violet . by the end of the weekend, I hope too have the engine and hydrostatic unit out. Finlay getting to the four wheel drive unit. Does anyone have any advice, stuff to watch out for?
Thanks in advance.

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02-18-2021 07:14:14

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 Re: Oliver 1850 in reply to 1850joe, 02-17-2021 08:29:20  
You have a manual and are familiar with Olivers? Pull that PTO shaft first!

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02-19-2021 10:35:08

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 Re: Oliver 1850 in reply to scootergmc, 02-18-2021 07:14:14  
Any advice on removing the PTO shaft? I watched the Oliver guy on YouTube and read the shop manual. I removed the snap ring. Pulled out the stub. Removed the o ring. Spun the pto shaft with the main shaft back into the crankshaft. Used and impact gun while pulling on the shaft. I come to the same end as the guy in the video. only I don't have the transmission opened to look in the top.

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02-18-2021 04:42:03

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 Re: Oliver 1850 in reply to 1850joe, 02-17-2021 08:29:20  
1850 gas mfwd sounds like a pretty rare tractor. I wouldnt think there were to many mfwd gas tractors built.

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02-18-2021 04:56:53

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 Re: Oliver 1850 in reply to Olliejunkie, 02-18-2021 04:42:03  
The Mennonites in this area have a joke. Oliver only built one and my father and uncle bought it.

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02-18-2021 04:35:32

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 Re: Oliver 1850 in reply to 1850joe, 02-17-2021 08:29:20  
Hopefully this reaches everyone as I hoped. Those are all Good suggestions. I will try them all. I live on a farm in southeast Pennsylvania and grew up driving this tractor. It's been maintained over the years. Now it's showing it's age.

This is a 4 wheel drive Oliver 1850. I'm trying to look at all issues I have. All your advice for the engine is Good. I will try them all. the next issue I have is gear oil is seeping out of the transmission into the 4wheel drive unit. I'm going to pull the engine today. Then the hydrostatic unit. Hopefully then I'll be staring at a 4 wheel drive unit.

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02-17-2021 17:26:41

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 Re: Oliver 1850 in reply to 1850joe, 02-17-2021 08:29:20  
What type of gas are you running, Good clean fresh non-ethenol? Is there rust in the tank? Have you done a tune up and checked the timing, clean the carb and check the float? I woukd also check and adjust the valves. Start with the basics.

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02-17-2021 13:04:46

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 Re: Oliver 1850 in reply to 1850joe, 02-17-2021 08:29:20  
well when has it had a major tune up? not going to run forever.

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02-17-2021 09:25:51

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 Re: Oliver 1850 in reply to 1850joe, 02-17-2021 08:29:20  
Hi would say that should be good enough I would advance the timing and see what happens A late timed engine lacks power

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Gary Mitchell

02-17-2021 09:55:40

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 Re: Oliver 1850 in reply to Bison2010, 02-17-2021 09:25:51  
It strikes me that would be an awful lot of compression for a gas 1850 or gas anything for that matter. I'd try higher octane fuel if your gauge is accurate. gm

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02-17-2021 11:19:26

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 Re: Oliver 1850 in reply to Gary Mitchell, 02-17-2021 09:55:40  
Start the engine and get it up to working temp. Shut off and let sit overnight. Next morning start and immediately shut off. Remove the plugs and look for water droplets on electrodes. The book sez that there should be no more than a 10 percent difference in compression between cylinders.

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