2900 question

Are the sleeves in this engine (in my one-ninety XT diesel) supposed to have 1 or 2 O rings on them. My #2 sleeve was leaking anti-freeze into the oil, so the mechanic at the shop where I have it at pulled that one. It has 2 O ring grooves, but only one O ring, an orange one in the bottom groove. I called a long time allis mech that I know, and he thought that they should have black O rings in the top groove, and the orange ones in the bottom. Any thoughts on this topic? If it is supposed to have rings in both grooves, then that's probably why it took to leaking?  Thanks, Darrel

Here's a picture of a  new sleeve, note that it is upside down in the picture:

injector tubes in the head are also a possibility on 7000, 7010, 7020, and 8010, as well as some combines. 

thanks for the info, guys. I'm really in a bind with this whole situation as to what to do. The engine would of had a lot of life left in it if the sleeve hadn't started leaking. I know that the right thing to do would be to do a complete rebuild, but money is not aundant at the time. It's seems a waste to be replacing parts that haven't got "used up" so to speak, but on the other hand it would be stupid not to replace them while it is apart. If it all comes down to the fact that it got put together last time (before I owned it) wrong, (due to the lack of 1 o ring), it would be pathetic, but kind of water under the bridge now. Darrel

Thanks, Hurst. I've pretty well made up my mind to at least do sleeves, pistons, and rod bearings. Going beyond that and pulling the engine completely out and doing the head and all is what is questionable. A couple questions that just came up are: the copper sleeves that Ed brought up where he mentions the  7000 on up, do they pertain to my 190 XT as well? and how is it with changing rod bolts, I know it goes without saying on anything 426 based, but should I change them on my 2900, too. My local dealer told me that for my serial # engine, they can't even get new rod bolts because there is an old style rod and a new style rod, and by my serial # it has the old ones which take a rod bolt that they can't get from agco, and the newer bolts won't work with old rods. If that makes any sense at all. Darrel

I would re-seal it. New agco orings, a gasket set and rings. It prolly wont work enough years to justify all new parts. Someone used cheap orings is my guess. Mack, I was referring to the post from jack/ky about a 7020, and copper tubes. good luck! Ed.

Also, if you do new rings, check that ring landings in the piston to make sure that the gap is within spec and make sure you don't have a ridge at the top of the sleeve after honing.  If it was running find before and the ring gap is in spec, I would consider just reusing old rings, as they are worn to the bore and may actually seal better than new rings if the bore is out of round.  As for the rod bolts, they changed to a 12point flanged bolt that is a stronger grade, and older style rods can be updated to the new style bolts with some machining (I forget what exactly it entails, but it was somewhat spelled out in my 7000's service manual in the engine section, even though all 7000s had the new style rods as far as I know...).  I was told by several allis guys that replacing rod bolts was not something that was required on the 301.  However, that was for the newer style rod bolts, so I'm not sure this still applies to the older rod bolts or not?  Just from watching these forums over the years, it sure doesn't seem that the 301s have much of a tendency to throw rods out the side of the block, but I'm sure some will disagree with me on this. 

Hurst

The only way to fix the problem is to rebore bottom of the block put a sleeve in and rebore. The block is rusted away and new o rings will hold for awhile but the block will leak.I do 3-4 blocksa year for a dealer this will stop the leaking. Everthing else is bandaid fix.

When installing 301 sleeves we are supposed to use vegetable oil on sleeve O-rings, wife has sunflower oil in the house will that work also. 

Thanks for the prompt reply Dr. Allis  

Edited by Beirnesy - 18 May 2019 at 8:44pm