JZLAJeep

Hmmm... I'll be in Vancouver in a few weeks for work. Wonder if I can take this on the plane.

Nice! Leaf springs still "smiled" and didn't "frown" like they tend to at this age?

I think they are, but I'm not touching those in my repairs. Those plugs looked OK.

The transmission type is irrelevant to the rear main seal replacement. The transmission gets pulled (usually) regardless of the type. We were lucky enough to find an AX-15 from a Cherokee in a junk yard. Keep an eye out there.

100%

25 mm (0.984") diameter plugs (Dorman Part #555-097) were the answer. I understand Dorman 555-125 (61/64" Dia.) plugs have been discontinued.

Got the 2" plugs in easy enough. I'm struggling with the 1" (allegedly) plugs however. The new plugs are slightly larger diameter than the old. If you look at the photo, the new plug peeks out from under the old plug. With the assistance of AI though, I've learned that Dorman sells 61/64" diameter plugs (Part #555-125) and 25 mm (0.984") diameter plugs (Part #555-097). Hopefully one of those works!

Nice! Keep tinkering. This seems like a really solid approach: "I love that I've never did anything completely permanent to it. Every modification I've done has always been made to be bolt in to leave the chassis side alone."

I found that nearly all the bolts snapped. Our fix was to grind them out, replace them with I think #10 bolts, and tack welded the bolts in.

I've seen some people recommend Permatex No. 1 and at least one other recommend gasket shellac. I don't know if it's just a preference for which to use. I suppose if they work, that's all that matters.

I did get the old plugs out. Apparently the smaller plugs are 1" diameter. I bought Dorman 555-018 1" steel expansion plugs that are sold individually. The diameter is slightly larger than the plugs that came out however. That has me a bit worried, but I suppose they'll go in with enough pounding. I was glad the 1" plug was steel because the first punched through into the cooling jacket and had to fish it out with a magnet. Couldn't have done that with a brass plug. @AZJeff I didn't see your removal suggestion until I already had the plugs out, but that's a good idea. Planning to delete the EGR while everything is apart. I've since cleaned up the ports since I took this photo. They are clean and shiny now. The old plugs. I punched through the rotten one that was leaking. That actually made it come out easier.

Have the day off for Columbus day and decided to take on the leaking expansion club on the CJ-7. Bought Dorman expansion plug part number 567-017 which appears to have the "large" expansion plugs, but not the "small" plug that is leaking. I understand that I hit the top or bottom of the big plugs to turn them sideways and then pull them out with pliers, but how are these "small" plugs removed? And what do I replace them with?

I love it! Looks like some successful bargain shopping!

Can you grind them off from the bottom?

As a man that's a certain age to appreciate this, I think this is hillarious! @89 MJ dumb question, but how does one know whether they have a high altitude or regular CPS. Living in Idaho and owning a MJ that was originally owned in Oregon, it's a coin toss on the original quipment.