Transfer case rear bearing cap sealing |
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SteveBonny
Member Joined: 15 Sep. 2018 Location: Waterloo Iowa Status: Offline Points: 103 |
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Posted: 13 Apr. 2019 at 1:10am |
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Hi folks. I just removed the rear bearing cap from my transfer case (cj2a). I'm replacing the seal due to a bad leak but I also appear to have oil leaking from the joint between the cap and the transfer case. There are a couple of shims in there but all metal to metal joints.
Is there a recommended way to seal this stack of joints or am I missing something? Thanks for any guidance - Steve |
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47 CJ2A
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ndnchf
Member Sponsor Member x 2 Joined: 22 Sep. 2017 Location: Virginia Status: Offline Points: 2177 |
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Clean each shim well, then spray with copper coat sealer on both sides.
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1948 CJ2A - It goes nowhere fast, but anywhere slow.
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outlw21
Member Joined: 06 Aug. 2017 Location: bakersfield CA Status: Offline Points: 240 |
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Need to seal the bolt threads in the case. Also I put a little sealer on the OD of the seal.
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swampman
Member Joined: 03 Feb. 2019 Location: Davison Mi Status: Offline Points: 33 |
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I would recommend anaerobic sealer.
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CJ2A 1948
YJ sbc fi 37 pit bulls 1987 Jt Rubi 2020 |
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ndnchf
Member Sponsor Member x 2 Joined: 22 Sep. 2017 Location: Virginia Status: Offline Points: 2177 |
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Check out part 8 of my Dana 18 rebuild series. I discuss shimming and use of sealers.
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1948 CJ2A - It goes nowhere fast, but anywhere slow.
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SteveBonny
Member Joined: 15 Sep. 2018 Location: Waterloo Iowa Status: Offline Points: 103 |
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Perfect. Thanks for the help.....It'll never leak again 😇
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47 CJ2A
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SE Kansas 46 CJ-2A
Member Sponsor Member x 3 Joined: 22 Jan. 2016 Location: S.E. Kansas Status: Offline Points: 3183 |
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46 CJ-2A #64462 "Ol' Red" (bought April 1969)(second owner)(12 V, 11" brakes, M-38 frame, MD Juan tub)
U.S. Coast Guard Chief Petty Officer(ret.) U.S. Army Vietnam veteran and damned proud of it. |
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Steelyard Blues
Member Joined: 09 Oct. 2017 Location: Reno, NV Status: Offline Points: 1482 |
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Ain't that the truth. It took me three tries. Are you replacing the output flange? Micah
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1947 CJ2A 106327, Engine J109205, Tub 97077. Luzon Red
https://www.thecj2apage.com/forums/steelyard-blues_topic41024_post397981.html?KW=micah+movie#397981 1965 Johnson Furnace Company M416 #6-1577 |
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SteveBonny
Member Joined: 15 Sep. 2018 Location: Waterloo Iowa Status: Offline Points: 103 |
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Yeah I put a new one on and about 3 lbs of permatex
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47 CJ2A
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SteveBonny
Member Joined: 15 Sep. 2018 Location: Waterloo Iowa Status: Offline Points: 103 |
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Back together and filling with oil as we speak. Here is a hot tip for filling with awkwardly located fill plug locations.....
Also handy for bleeding the brakes on your cj. It's fairly slow with gear oil so I just put my best guess at the fill quantity in the bottle, pump it up and leave it to fill while I tidy up tools, go for lunch etc. |
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47 CJ2A
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SteveBonny
Member Joined: 15 Sep. 2018 Location: Waterloo Iowa Status: Offline Points: 103 |
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I'm gonna call this a success, thanks for the help. I've been commuting to work the last 2 days and ran around a few miles at the w/e (about 50 miles total) and I only have a drip or 2 of fresh oil on the floor....... rather than a pint a week. The new drips aren't coming from the rear seal area either, looks like rear engine seal and somewhere on the gear box.
I used a new seal and output flange. There was also a gasket under the seal that I replaced and put in with permatex. Permatex under the head of the bolts that hold the brake backplate on. These also had copper washers which I reused. Gold seal sprayed on the shims both sides. I did seal the yoke splines with permatex too although I don't think this was a part of the issue as it would have to leak out at the driveshaft joint which was dry. Permatex on the fill and drain plugs. The old seal was a bear to get out and the rubber was hard and crumbly - maybe original part? I'm happy at the moment anyhow :) |
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47 CJ2A
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ndnchf
Member Sponsor Member x 2 Joined: 22 Sep. 2017 Location: Virginia Status: Offline Points: 2177 |
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Sounds like success to me - good job!
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1948 CJ2A - It goes nowhere fast, but anywhere slow.
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Bruce W
Member Joined: 29 July 2005 Location: Northeast Colorado Status: Offline Points: 9611 |
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Has anyone ever measured the bearing clearance/preload both before and after the application of Copper Coat on the shims? It has to amount to something........... There's a video where a guy measured the thickness of a Sharpie mark. BW
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It is NOT a Jeep Willys! It is a Willys jeep.
Happy Trails! Good-bye, Good Luck, and May the Good Lord Take a Likin' to You! We Have Miles to Jeep, Before We Sleep. |
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4145 |
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I did. It went from .005 to .0065 ish. I coated both sides of each shim with one coat of Permatex copper spray. This could vary though, depending on how many shims were used, and how thick a coat one might spray on. I didn't count the shims, but I used a complete pack from Novak, Plus two or three more from an additional pack.
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1- 1946 CJ2A
2- 1949 CJ3A |
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Bruce W
Member Joined: 29 July 2005 Location: Northeast Colorado Status: Offline Points: 9611 |
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As long as we are aware of that, and can keep it within specs, we're good, right? BW
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It is NOT a Jeep Willys! It is a Willys jeep.
Happy Trails! Good-bye, Good Luck, and May the Good Lord Take a Likin' to You! We Have Miles to Jeep, Before We Sleep. |
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4145 |
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Yep. Definitely. I anticipated this during assembly. If memory serves, all the shims were .0075 thick. I wasn't sure how much additional thickness the copper spray would add. I did the initial set up dry, then removed one shim. I sprayed them, then reassembled and hoped for the best. It worked out okay for me.
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1- 1946 CJ2A
2- 1949 CJ3A |
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SteveBonny
Member Joined: 15 Sep. 2018 Location: Waterloo Iowa Status: Offline Points: 103 |
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Good thought, I hadn't considered that and didn't check it. I'll likely end up rebuilding the Tcase sometime soon - seeing as it had no oil in it I'm guessing it's not in too great a shape! It competes with the gearbox and front axle to make the most noise.
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47 CJ2A
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