Farmall Cub Forum -- Questions and answers to all of your Cub related issues.
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I finally got my engine back from the engine shop with a complete rebuild-(new pistons 0.040 oversize, valves, .010 grind on the crankshaft and everything that goes along with this type of rebuild). The engine cost more than I had planned to spend for everything but that shows what happens to a rookie. When the engine was thoroughly cleaned a crack was discovered in the front crankcase cover as shown in the pictures below. It is between the white lines and hopefully it will show up in the pictures. Engine shop recommended that I use JB Weld since it is in a low stress area and is in an area where oil only splashes. Is this fix likely to work?
Now I have to install the fan drive pulley and oil seal. Since this is my first time for this operation I am trying to determine how to proceed. I have read several forum threads on this subject and decided that I'll use the grade 8 all thread and try to pull it on. I am not clear on the wear sleeve. There is not one currently installed. On the forum I saw at least one post that said new oil seals come sized for a wear sleeve and many come with the wear sleeve. This oil seal came in the rebuild kit that the engine shop used and they gave me the oil seal. How do I determine if I need a wear sleeve?
The crack goes through and into the seal boss, seal retaining area. I would purchase a used front cover.
If you are going the epoxy route, "V" out the entire crack on both sides of the cover then fill and sand smooth. There are some great epoxys out there, select one that is suitable for high temperatures and metal repair.
Wear sleeve. Check the pulley for wear where the seal lip rides on the pulley. If you have significant wear/groove you need the wear sleeve.
I have an excuse. CRS.
I agree with Eugene. Replace the front cover. You may regret fixing the cracked one, but you will never regret replacing it.
MD, Deep Creek Lake
"1950 Something" Farmall Cub
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
1951 Farmall Super C w/FH
Clownfish, I have a used front engine cover at my farm that I can check out for you. Not sure if its condition. And not sure what one is worth, either! I will let you know what I find, if you want.
I now have a scrap engine with what looks to be a usable front cover. In searching the forum I see a lot of references to the "Special Tool" for removing the fan drive pulley. Where do you get the special tool?
Glenn, Here are links to two different methods for removing the pulley:
Most of the Cubfest hosts (along with others) will have a version of the bottle jack.
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