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

550 update

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02-10-2020 15:09:08

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Ok, to catch up; my 550 motor was stuck, I got the pistons out and took the block to a machine shop and had them use a Rigid Reamer on the sleeves to see if they could save any of them. They called and said I needed to replace 1 sleeve, the rest were good enough to use again. The sleeve is on the way. I ordered rings and gaskets for it, the head is done waiting for me to pick it up. Maybe by the end of the week I'll have enough parts to start putting it back together.
I'm wondering, since it's apart, should I think about replacing seals on the front of the transmission case where the pto shaft and the shaft for the clutch come thru it? I can't tell that they have been leaking, but I cleaned the grease and oil from the top underside of the bell housing and there was oil and grease all the way to the back of it. I know, that's a poor description. I did a Z split and then lifted the steering column and top half of the bell housing off when I pulled the motor out. It was pretty nasty in there, I'm pretty sure the rear main was leaking, just didn't know if it would throw oil that far back. Thanks, Chris

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02-13-2020 08:07:35

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 Re: 550 update in reply to super99, 02-10-2020 15:09:08  
I always when had stuff apart new seals go in, I am looking to get 550 back we always had them on the parents place 55 thru 550 checkerboard series, which do you have, the one is still at parent place but sister got it in the estate settlement so it will just go to rust setting in spot it is. she will not talk let alone sell to me after the estate was over. I did get the original 1850 back thou it was last tractor bought new by my dad, also have the only 60 oliver that my uncle had. good luck on your project

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Super 55

02-10-2020 17:24:57

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 Re: 550 update in reply to super99, 02-10-2020 15:09:08  
I would replace all the seals, including the rear seals at the pto. There is also an O ring that is on the pto shaft that you shouldn't overlook. I would definitely change the pto clutch discs too. It's not hard to split the tractor, but why do it twice? I replaced all of those parts recently and it doesn't leak a drop.

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02-10-2020 17:14:45

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 Re: 550 update in reply to super99, 02-10-2020 15:09:08  
I would also thoroughly inspect the main clutch and especially the PTO clutch. The PTO clutches are notorious for slipping, linkage wear, worn clutch friction plates, warped clutch steel plates etc.


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02-10-2020 16:19:37

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 Re: 550 update in reply to super99, 02-10-2020 15:09:08  
Absolutely, while you have it torn down, replace the PTO seal as its notorious for dumping all the transmission out after 50 or so years

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02-10-2020 15:22:48

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 Re: 550 update in reply to super99, 02-10-2020 15:09:08  
I'm always of the opinion that you fix everything in there while you have it apart. I hate putting something together only to have the next thing fail in six months.

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