from here it gets rough
Join Date: Dec 2007
Location: Beyond Honolulu
If you're leaking water from the back of your engine, you have 3 freeze plugs back there in the 4.0. One is on the back of the head, the other 2 are behind the flywheel. You will need to pull the trans to replace them. Whether or not you decide to separate the transfer case from the back of the trans or not, it is just one helluva lot easier to deal with the trans alone. It is hard to pull the trans back far enough to get a swing on your hammer/driver to reinstall the new plugs though, so you are likely going to have to get your trans on the ground. To replace the one in the rear of the cylinder head, you can drop the back of your engine down/jack up the front of the engine so that you can access this plug and drive in a new one. There isn't enough room to pull back the trans to get a swing as the bell will hit the tunnel before you get enough clearance. Likely one of these 3 freeze plugs is to blame, just replace all 3 of them. There is another small "freeze plug" back there, but I don't think it goes into the water jacket. Someone will know and fill us all in. Or I'll find out more and edit this post.
Edit--yeah, the small plug on the back of the 4.0 is over the oil gallery/end of the camshaft. But you'll be able to see which one is leaking when you get back there, replace all of them you can get to, if one is going, the others are likely to as well soon enough. They do make Brass freeze plugs.
....I'm not smart, but I can lift heavy things.......
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I'm stuck on da Rock http://kamfamily.wordpress.com/2009/...waiian-limpet/
We will be going Metric every inch of the way.
yes I'm a some guy and have always put gasket sealer on my surfaces before mating
You should go to Pirate. I hear they are real smart over there. You'd fit right in.