Fantastic. I'll use the YJ front half, verify the oil pump is working/has o-rings on my current rear half, and mate them together.
-Mac
Chasing 231J leaks
- Thread starter macleanflood
- Start date
Fantastic. I'll use the YJ front half, verify the oil pump is working/has o-rings on my current rear half, and mate them together.
-Mac
I just went and looked back at the post where you showed that you bought the YJ case. It actually isn’t a YJ case, it is a ZJ case. 52097526 is 4.0 ZJ with the 42RE.
I don’t think that’s a problem, but that weird looking electrical switch will need to be swapped (it’s not vacuum I don’t think), and the photo doesn’t show it but it probably has a weird looking flange yoke.
Looks like that case has a medium length 23 spline. Should still work okay on the AX15, which only requires a short gear at minimum.
That might be why it didn’t leak on the trail(slower speeds-less heat)?
I don't know if I trust a new pump.
O-ring confirmed present and accounted for on existing case.
Cleaned a tad bit more plastic out of the screen.
Back half prepped. Starting in on stripping the planetary out of the front
-Mac
Case up to 375, down to 250 now. Annulus gear is not budging. Definitely different gear cuts. Can't use this case with this annulus gear.
-Mac
-Mac
Just use the planetary and input that was already in it. It was already 23 spline like I mentioned earlier.
Also, according to everything I could find, the annulus gear is the same, so change it wouldn’t do anything. I don’t know how they can use the same annulus but make bad noises when swapped between case halves, but somehow that is how it worked. It’s gotta be some dimensional difference somewhere.
But the tooth cut on the different year annuluses are the same.
All you should need to do is hammer out the needle bearings in the 4x sprocket, install your SYE, and button it back up.
I would if someone hadn't cut most of the YJ snout off.
485 degrees is the magic number.
-Mac
I don’t think swapping the annulus is going to solve the issue of mixing and matching parts, but I guess we’ll see. I compared two annulus gears side by side (one early one late) and they looked identical to me.
That cut up input looks like it is still long enough to work on the manual transmission. Wonder why they cut it. It was a medium length originally based on being from a ZJ. There is no 23 spline transmission that would have needed it cut down for any reason.
So out was the easy part. In is a totally different animal.
485 and it slid in a bit...but it wants to walk down catywampus and not straight. Tried various smaller hammers, tried my press which was a huge mistake because the angle iron I was using caught two teeth and chipped them. Hopefully I can file that out. Hour of pounding got me a messed up transmission side fence and the gear flush...but it needs to be .290 down from the face as measured. It's 97 in the shop. Wrapped the case in fiberglass for a slow cool because it seems like the right thing to do. Going to rehydrate and wait until it's cooler tonight and see if I can rig up my press better...I unbent 3/16 angle iron on try one. I probably should use the other gear to push.
If you look up in the pictures you can see a different face cut in the annulus gear. I tried the TJ sun gear in the YJ case/annulus and it would spin a bit and then bind. Close enough to be dangerous.
-Mac
485 and it slid in a bit...but it wants to walk down catywampus and not straight. Tried various smaller hammers, tried my press which was a huge mistake because the angle iron I was using caught two teeth and chipped them. Hopefully I can file that out. Hour of pounding got me a messed up transmission side fence and the gear flush...but it needs to be .290 down from the face as measured. It's 97 in the shop. Wrapped the case in fiberglass for a slow cool because it seems like the right thing to do. Going to rehydrate and wait until it's cooler tonight and see if I can rig up my press better...I unbent 3/16 angle iron on try one. I probably should use the other gear to push.
If you look up in the pictures you can see a different face cut in the annulus gear. I tried the TJ sun gear in the YJ case/annulus and it would spin a bit and then bind. Close enough to be dangerous.
-Mac
Mixing and matching the sun/planetary combo into the wrong year combo definitely doesn’t work, tried that myself.
I looked closely at my annulus gears and couldn’t see a difference, and the 94-96 and 97-99 parts manuals both show the same part number for annulus gears. I actually compared 3 of them…1987 (old), 1994 (old), 1995 (new) and they all looked the same to me. I do know the 1987-1993 had a different part number, but o don’t know what the differences are. Maybe my 94 had the old part number, but the 94-96 catalog showed only one part number and it definitely differentiates between old and new part numbers for all the inputs, planetaries, etc. So I would think if there were two annulus part numbers in 94-96, they would have both been listed. Who knows.
I assumed the binding of gear teeth when installing planetary into the wrong case was some other dimensional issue, like maybe a difference in where the annulus is located in the case half or something. The gear itself seemed the same.
I am patiently waiting to watch and see how it goes once the gear is fully installed.
I looked closely at my annulus gears and couldn’t see a difference, and the 94-96 and 97-99 parts manuals both show the same part number for annulus gears. I actually compared 3 of them…1987 (old), 1994 (old), 1995 (new) and they all looked the same to me. I do know the 1987-1993 had a different part number, but o don’t know what the differences are. Maybe my 94 had the old part number, but the 94-96 catalog showed only one part number and it definitely differentiates between old and new part numbers for all the inputs, planetaries, etc. So I would think if there were two annulus part numbers in 94-96, they would have both been listed. Who knows.
I assumed the binding of gear teeth when installing planetary into the wrong case was some other dimensional issue, like maybe a difference in where the annulus is located in the case half or something. The gear itself seemed the same.
I am patiently waiting to watch and see how it goes once the gear is fully installed.
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That oil pump pick up tube isn't properly inserted into the oil pump. The o-ring wouldn't be visible and it should be seated up inside.
Yeah I pulled it out to verify the o ring was present and stuffed it back in.
Good call though.
-Mac
Ok good! I replaced my during my struggle recently and didn't notice that the o-ring was stuck in the old pump until I tried to install the new one. Luckily it was nearby, but glad I caught it.
You asked for data on t-case temperatures. Where did you take your measurements at? I feel like making a joyride, and I may as well shoot the laser at it in the name of science.
I hit the back of the front jack shaft, fill plug and drain plug and just behind/below the speedo gear on the tail housing.
-Mac
Oh and to add insult to injury I can't find anyplace the case is cracked and it holds water where I figured it was leaking.
Funny as hell if it's the yoke all along.
Pressing the ring down worked but it would not press straight. Took about 20 setups working around edges. Glad I saved my clapped out F250 unit bearings.
I'm assuming the factory used more than a 20 ton press assembling these.
Butchery with a carbide bit next.
-Mac
Funny as hell if it's the yoke all along.
Pressing the ring down worked but it would not press straight. Took about 20 setups working around edges. Glad I saved my clapped out F250 unit bearings.
I'm assuming the factory used more than a 20 ton press assembling these.
Butchery with a carbide bit next.
-Mac
When you last touched the yoke, did you use a new rubber star washer? Those things are finicky and usually start to shred up after use one time. Wonder if you were leaking there.
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