Transmission leak; found why, need info.

Themaggots · Post by **Themaggots** » Thu Aug 02, 2012 1:49 pm

Noticed a couple of days ago that there were traces of oil in my parking place. Driving the car today I noticed noise on the 3rd gear. And noise when going over 30mph and pressing the clutch. I'm not sure how to describe the noise but it seemed like grinding.

So I got the car on jack stands and started wiping the tranny area down and I think I've found 2 leaks.

The first seems to be from a cracked housing, note that it's not leaking from the drain plug:

-

It does not leak a lot at the moment.

The other one seems to come from where the transmission bolts to the engine.

This one leaks a lot. It is dripping every 15 seconds or so. That's the one I'm most concerned about. Any ideas what it could be?

Post by **occasional demons** » Thu Aug 02, 2012 2:23 pm

I would be more worried about the crack at the diff housing. Possibly you have a diff pin coming out. If it launches any farther, if it is that, bye bye MTX.

The other leak could be the cam position sensor, or the oil pressure switch. Both not terrible to get to, the oil switch a little more difficult.

Themaggots · Post by **Themaggots** » Thu Aug 02, 2012 2:25 pm

occasional demons wrote:I would be more worried about the crack at the diff housing. Possibly you have a diff pin coming out. If it launches any farther, if it is that, bye bye MTX.

The other leak could be the cam position sensor, or the oil pressure switch. Both not terrible to get to, the oil switch a little more difficult.

CPS and/or oil pressure sensor could leak transmission fluid?

Post by **occasional demons** » Thu Aug 02, 2012 2:32 pm

Ah missed that part. I was thinking along the engine to bell housing, didn't really look at the pic. My bad.

Prolly an input shaft seal at the bell housing leak. Unless there is another crack inside there.

Themaggots · Post by **Themaggots** » Thu Aug 02, 2012 2:36 pm

occasional demons wrote:Ah missed that part. I was thinking along the engine to bell housing, didn't really look at the pic. My bad.

Prolly an input shaft seal at the bell housing leak. Unless there is another crack inside there.

I guess I'll have to tear the thing apart to find out.

About the diff pin, would it be too late to put diff pin savers and fix the crack?

Themaggots · Post by **Themaggots** » Sat Aug 04, 2012 6:15 pm

Removed the trans from the car.

Here is a picture from the input shaft seal. It looks to me that the red seal is damaged. But could it simply be some RTV/Anaerobic sealant and not a seal?

Pic from inside

This little part fell out when I removed the trans. Haven't really searched where it goes yet but maybe one of you know.

Then I split the case in half. I'm positive I found why it was leaking.

The diff pin was going out.

This bearing here was falling apart. Can anyone confirm which number it is in the second or third picture?

Thanks for the help.

jspata17 · Post by **jspata17** » Sat Aug 04, 2012 8:07 pm

you are so lucky you caught that before that differential pin blew the whole trans apart lol.

Post by **occasional demons** » Sat Aug 04, 2012 8:46 pm

Damn. Unfortunately, I guessed correctly.

The bushing, I have no clue. The bearing, I don't believe is shown in the drawing. It is on the end of item 18, in the bottom pic. (Output Shaft)

PM chipdogg, if he doesn't see this thread soon. I'm sure he can fix you up with what you need. Not sure the case is truly salvageable tho.

Themaggots · Post by **Themaggots** » Sat Aug 04, 2012 9:41 pm

If my FSM is right, it would be the output shaft roller bearing.

Any part numbers for that?

(7) Remove output shaft roller bearing from output
shaft.

Also, can I use brake cleaner to clean the transmission? There's metal shaving almost everywhere.

Post by **occasional demons** » Sat Aug 04, 2012 9:50 pm

I see no oem listing for it. They may only sell it with a new output shaft.

I don't see why you couldn't use brake clean. I would degrease it as well as possible, and take it to a car wash and blast it, then use compressed air. You need to get all of the shavings out.

Themaggots · Post by **Themaggots** » Sun Aug 05, 2012 9:53 am

Well I found the part number for it.

4761093 - BRG PKG OUTPUT SHAFT - MSRP: $58
It's number 11 in the following picture.

It comes with the roller bearing and a a bearing race. That's probably why we can't see it well on the above picture.

I'll PM chipdogg to see if he has any lying around that he could sell me for cheap or a part number for a replacement. Seeing as the dealer around here wanted $12 for each diff pin saver bracket (MSRP around $4) I won't be surprised if they try and sell me the bearing for $150.

chipdogg · Post by **chipdogg** » Sun Aug 05, 2012 10:17 am

Bellhousing and diff are toast. Someone was in there before, shouldn't be rtv around the input shaft seal/bearing/snout. I can get you all those parts. For way less than that. May have to wait a bit until I get back into town. I have some bellhousings and diffs here as well. I can send them to you or you can send the trans up here and I'll assemble it and put new diff bearings on and properly shim the race in the bellhousing. I can also take the whole thing apart to clean it out. If you take off the black cover on back of the case and look in the hole of the input shaft, its likely full of that crap.

Or I can rebuild that one so its like new since its all gotta come apart to find all that aluminum and plastic. Its not on that magnet.

That "bushing" is an alignment dowel that goes in one of the lower ears of the block. Don't install a trans without it or you'll crack a flexplate.

The only way he's "lucky" he found it now is because it didn't strand his ass on the side of the road. Trans is still f'd in its current state but easily salvagable if you have the right stuff.

Themaggots · Post by **Themaggots** » Sun Aug 05, 2012 10:22 am

It'd be great if I could get a bellhousing and diff in good condition from you but I'm in Canada so shipping will probably be way overkill.

I understand why the bellhousing is toast but why the diff?

chipdogg · Post by **chipdogg** » Sun Aug 05, 2012 10:27 am

The pin for sure, I can get those new. But pull the pin out the rest of the way. Its probably bent. Take the "good" end and stick it in each hole. Does it fit snug? Or is the one hole its coming out of all egg shaped with mushroomed over metal on one side? If there. Is. Any play at all, diff is junk. It'll tear up new pin and ruin trans.

As for shipping, its not too bad. Pain in the ass, yes. I shipped a whole trans with $2000 insurance (special gearing so it wasn't cheap) to canada last fall for only $130. 108 lbs.

Themaggots · Post by **Themaggots** » Sun Aug 05, 2012 10:30 am

I'll fo and pull/push/hammer the diff pin out to check.

Themaggots · Post by **Themaggots** » Sun Aug 05, 2012 10:47 am

The diff pin is straight. There's some play on the side it was coming out of but the other end is perfect. It seems slightly damaged.

The bearing race I mentionned in the PM is the one from the output shaft roller bearing.

I know that removing it will be useless if I get an other bellhousing but at least I'll know how.

Post by **occasional demons** » Sun Aug 05, 2012 10:47 am

Themaggots wrote:Well I found the part number for it.

4761093 - BRG PKG OUTPUT SHAFT - MSRP: $58
It's number 11 in the following picture.

Ha, I see it now. I was tired as hell yesterday after being up since 4:00 AM going to work, then working on Casper until 7:00 PM

Glad you found it tho.