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Thread: CJ-3B Transmission Problem - Shift lever not shifting the gears

  1. #11
    Super Moderator bmorgil's Avatar
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    I am thinking he will need to soak the cover completely for a few days gm. I was thinking a 5 gallon pail full of WD 40 Specialist or something similar. https://www.amazon.com/WD-40-Special...89920259&psc=1

    You could rinse the box out with kerosene or mineral spirits. I like to use a cheap thin 10W motor oil for a good wash. If it is really dirty a rinse with mineral spirits wont hurt. Followed by some thin 10 W oil, then the right stuff. I wouldn't put anything else in there. If water comes out of the drain plug, just pull the trans/transfer case out and go through them. Water damage on the counter shaft of the transfer case and the reverse idler shaft and counter shaft of the trans, is very, very common. The water lays down in the bottom. Rust forms but worse, the water provides zero film under the bearings. Water will immediately damage the components under load when it is present. Where dirty oil will cause frosting of the components, water will cause actual metal displacement. Water will ruin it, not just wear it out faster like wrong or dirty oil.

    As far as the rusty box... soak it for a week and pray.
    Last edited by bmorgil; 09-01-2020 at 06:14 PM.

  2. #12
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    Thanks again guys! I was able to get the shift cover free by cleaning and oiling as you suggested. It was hard to get the leverage I needed move the rails so I made a quick jig. See photos below. I was able to shift through all four shift positions in the jig. I dropped the assembly back into the gear box and shifted into reverse and first pretty well. I was not able to get second and third to work yet. The transfer case shift levers seem to work. I want to get that sludge drained now and get the box cleaned out.

    Thank You my Jeep Friends

    Chuck
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  3. #13
    Super Moderator bmorgil's Avatar
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    That jig would have been perfect for the soap box derby! Great idea, I take it you stood on it while you worked the lever. Good news there. Be sure to disassemble it and replace those springs.

  4. #14
    Super Moderator gmwillys's Avatar
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    Patent pending on the custom shift tower fixture. Love it!

  5. #15
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    gm, yes, I still had to stand on it at first but it did loosen up. And yes, definately need to change those poppet springs. The little detent balls are pretty cheep also. Bob, you are giving me too much credit on the patent. It did what I needed it to do. The funny part is that when I was done, I leaned it up in the corner of the garage where I know it will collect dust for the next 20 years. But there is no way I will throw it away.

    Ok, Next chapter. This evening before I put everything up, I decided to crawl under and find those drain plugs. I did and took them out. Yep, water. It was in the transmission and transfer case. The oil is very sludgy and is coming out very slowly. It will drain overnight and then I will start the flush.

    Thanks Again

    Chuck

  6. #16
    Super Moderator gmwillys's Avatar
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    I like building fixtures as well. Am getting too broke down to crawl around on a creeper to do body work. Then I'm too cheap to purchase a rotisserie, and haven't found any good industrial junk yards locally to source the odds and ends to make one of my own.
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  7. #17
    Super Moderator bmorgil's Avatar
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    Every time I see that picture you have of that jeep body hanging from an engine stand, I grin big time. What a great idea gm. I almost feel like taking the body off to give it a try. It sure is the way to go. I used 4 to 6 strong boy's. It went well enough, but it would have been sweet to just lower it and guide it down under control.

    You can do a lot of things with wood. Some good craftsmanship there gm. Nice looking woodwork!

  8. #18
    Super Moderator gmwillys's Avatar
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    If you like that, check this one out with the wagon body removal. Not as eloquent, but it worked. A lot more cribbing and wishing I had another engine hoist, or a two post lift would be even better.
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  9. #19
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    I Love It GM. I have been thinking of something like this for Phase 2. I may have to make some slight modifications. I love it. Also; That's it, now I know I have to find at least one engine hoist. I thought about renting, but not now. Gotta Have It.

    Back to business. I disassembled the worse of the two shift covers (rusty one) and found that one of the poppet springs came out in three or four pieces. I ordered the parts from KW and will get the good one disassembled in a couple of days. I have one concern though, I wasn't able to find the shift lever support spring or the two pins to fasten the shift forks to the rails. Referencing the 53-71 Service Manual, Figure J-14, the two pins are detail 10 and the spring is detail 11. If I can't find the pins I was thinking of substituting roll pins but I'm not sure if they can take the shear load. I would think so but I don't know. The spring is pretty special, Mine is rusty and I really want to replace it.

    Thanks you for you help.

    Chuck

  10. #20
    Senior Member 5JeepsAz's Avatar
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    GM what pictures! Love the rollers carefully bolted on there. A cheap hoarder like no other. Well, maybe a tie. I knew an old professor once that could compete. I'll prove it now. He stored wood for years for "when I build the big house". Well that day finally came. He mentioned it but nobody believed it to be true. Until the next day two dudes come a hauling over my proppity wild eyed and talkative. As it turns out, they'd been called in on a forgotten debt, but stood good for it and turned up at the old guys place to work it off just that morning. Only to find a prehydraulic boom on a non runner wrecker that had been drug into place by a tractor that only tugged five minutes at a time due to waters in the cracked block on it. But I digress. All of those vehicles were stretched out over top of the house foundation, with wood ready to be slid up higher to higher, the ancient rusted boom being the end point and highest. Anyhow, it was roof day because apparently the guy had enough of the walls up which nobody knew and was ready for roofing. So as it happens one of these two fellers were ordered to the end of the boom to let the old wood across the i-beams, the other guy sliding wood up across the rusted out hulk's of gradually taller vehicles. Wood was warped bent due to weathering, but the old guy said he wasn't worried about mold killing him because smoking hadn't yet got him so to go ahead and lay it on across. Which they did until lunch, finishing "the hardest parts,the top story". At eating time, these two snuck out the back way across my place with the story. Eventually the house did get built... Hoarding with a purpose, and converting bet debts to labor. Now that's good stuff!

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