Case 680E

[JSinMO]

Great progress @Eugen !
Yup it looks pretty spicy at least there are some numbers on piston 2 hopefully for reference.
I don’t remember if you had repair parts sorted out yet.
I’ve mentioned this fella before but not sure if I gave his contact information. John Saeli is the big case expert. I gotten stuff from him for my 830 and I think @Spike188 said he has used him in the past too. He is in New York State. If he doesn’t have what you need he probably knows who does.

https://www.saeliimplement.com/

If I gave you this information already then disregard. I didn’t go back through the thread and check.

[Eugen]

Thank you Jeff! Yes, I'll call John as soon as I can figure out the size of the sleeve. This engine used two different types of sleeve and the only way I can tell which I need is to pull it out. There's one major hurdle left: to undo the front engine mount bolt and lift the front of the engine enough as to get the oil pan off. Then connecting rod and piston out. If I get that far, it'll be me and the sleeve going for a waltz.

[JSinMO]

Yes, I remember you saying that now about the different sleeves. Looks like that piston is marked

A166122
A

I did a quick search and that number does come up as a piston for Case tractors. May help tell you what sleeve you have.

Not sure how good this site is but it lists sleeve

A153638
For that piston.

https://spare.avspart.com/spare/case/a166122/


Here’s a little more from a site I’ve ordered parts from many times.

https://www.yesterdaystractors.com/Case ... 30568.html

Hope it helps!

[Eugen]

Thank you for this information Jeff! The parts manual shows these two pages

There are some rebuild kits available for this tractor and as far as I can tell they all include the same pistons and rings, but the sleeve can be of two types and the crankshaft bearings should be chosen std, or undersized. These are after market kits and I could only find one maker for them, just like the one in the link you posted. It so happens that John Saeli is on the list and should carry these kits or order them, same as yesterdaytractors. They carry the same kits. My plan would be to measure the sleeve and then call John and ask about the right kit for me. I would also want the kit to include all the gaskets, just like the one you pointed to. Other sites have these kits for about 1300 USD. Convert that to CAD, shipping, brokerage and taxes and I'm looking at about $2000 CAD. But the engine would have new life in it.

Something interesting would be if the piston itself does not have a through hole and only the rings are shot.

[Eugen]

A little more progress last night. Was able to get the front mount engine nut off the bolt quite easily.

Then put a car jack on 4x4 wood and a small steel plate and lifted the engine by the ridge where it's bolted to the transmission, but it only went up about an inch. Duh! Looks like the hydraulic pump at the front hits the radiator.

Either the pump or the radiator needs to come off.

[DavidBarkey]

@Eugen Can undo the rad supports and raise it up on some blocks of wood and the strap it so can fall over ? That thing must be heavy to lift .

[Eugen]

@Eugen Can undo the rad supports and raise it up on some blocks of wood and the strap it so can fall over ? That thing must be heavy to lift .

Dave, there is part of the heavy gage steel frame on top and all around the rad. It looks like a pain to take out that radiator but hope I'm wrong.

[RoamingGnome]

@Eugen - I had to pull the pump off my 530CK to change the fan belt and replace the pump drive coupler - wasn't too bad a job and it would give you a chance to inspect the splines for the pump drive. Might also be a good idea to double check if there would be clearance issues with the fan as you raise the front of the engine...

[Eugen]

@Eugen - I had to pull the pump off my 530CK to change the fan belt and replace the pump drive coupler - wasn't too bad a job and it would give you a chance to inspect the splines for the pump drive. Might also be a good idea to double check if there would be clearance issues with the fan as you raise the front of the engine...

Gerry, I happen to have new belts and thought it was as good an opportunity to change them. I undid the two bolts holding the pump to its bracket last night. These two bolts took a while to undo, had to use two wrenches, no room for sockets, and was hugging the pump in an interesting yoga position.

Was hoping to pull the pump out of the splines and push it to the side. I can be so naive sometimes. On the passenger side of the pump the intake hose comes in, 3" diameter and very stiff. In front of it there's a bracket holding two hoses, circled in this image below.

I pulled with my hands on the pump last night more out of desperation than straight thinking, maybe, maybe by some miracle it would come out. It didn't. At this point it was midnight and dark, hard too see the bigger picture, so I went in early, defeated, to cry in my wife's arms.

[Eugen]

Ok ok, no need for supporting private messages, I didn't cry for real in fact it was a great day wrenching. Just kidding around a bit with you guys