Transfercase leak
Thread Starter
Joined: Apr 2008
Posts: 326
Likes: 2
From: bergen county, JERSEY
Transfercase leak
Here is my leak:



Research shows a leak for a tcase is normally caused by one of 2 Orings: Tcase Orings
Would this cause my 1st issue or is it now 2 issues?
1st issue: Troubleshooting: Dead, sticking, soft Clutch Pedal



Research shows a leak for a tcase is normally caused by one of 2 Orings: Tcase Orings
Would this cause my 1st issue or is it now 2 issues?
1st issue: Troubleshooting: Dead, sticking, soft Clutch Pedal
Hows the breather looking? any oil coming from that?
Is it all Tcase oil? or trans oil AND tcase oil?
Trans oil- Small Oring or big oring bad, Replace
Trans oil and Tcase oil, Bad Seal on Front Diff peice.
If its coming out of the breather, then you have a Bad inner Seal on the passanger side, Trans oil goes thru a gully to the passanger side bearing to lube it, If the inner seal goes Trans fluid goes into the Tcase, Tcase gets Filled and out the breather she goes. AND if u keep driving it like this you will Ruin your Tcase then your trans.
Reason i asked about the Breather is it looks like Oil is everywhere and thats a sign.
also this part of the drive train has nothing to do with clutch pedal operation, If your clutch felt normal and it was hard shifting or wouldnt go into gear or slip out of gear, [3rd,4th or 5th being first since they are higher up on the trans] id Say you have the inner seal issue and you drove on it to long and now your trans is jacked. But since your clutch pedal feel is weird id Say bleed it, and peep operation thru the little hole while a friend is pushing the clutch, Next id check for clutch pedal adjustment.
Is it all Tcase oil? or trans oil AND tcase oil?
Trans oil- Small Oring or big oring bad, Replace
Trans oil and Tcase oil, Bad Seal on Front Diff peice.
If its coming out of the breather, then you have a Bad inner Seal on the passanger side, Trans oil goes thru a gully to the passanger side bearing to lube it, If the inner seal goes Trans fluid goes into the Tcase, Tcase gets Filled and out the breather she goes. AND if u keep driving it like this you will Ruin your Tcase then your trans.
Reason i asked about the Breather is it looks like Oil is everywhere and thats a sign.
also this part of the drive train has nothing to do with clutch pedal operation, If your clutch felt normal and it was hard shifting or wouldnt go into gear or slip out of gear, [3rd,4th or 5th being first since they are higher up on the trans] id Say you have the inner seal issue and you drove on it to long and now your trans is jacked. But since your clutch pedal feel is weird id Say bleed it, and peep operation thru the little hole while a friend is pushing the clutch, Next id check for clutch pedal adjustment.
Last edited by blowngasket; Apr 3, 2013 at 09:54 AM.
Thread Starter
Joined: Apr 2008
Posts: 326
Likes: 2
From: bergen county, JERSEY
Clutch pedal adjustment was fine. After initial attempt of bleeding the clutch pedal is halfway normal, just feels like there are possible pockets still left in the line. I can drive for a bit and it was on and off with clutch pedal getting stuck. I felt NO issues with shifting. No grinds, no additional noises, etc.
I had a bad feeling about the additional oil all over since I looked at another thread nowhere near that dirty. I will have to look at your recommendations. It does sound like it is going to be a bad seal/O ring. I planned on putting it in storage for the next 2-3 months so I'm in no rush to get it fixed. I rather have the piece of mind knowing when I am ready to take it out 2 weeks prior I can bring it to a shop and not get charged with lube rather than without, if you get what I mean!
Thanks for the reply. Surprised how long it took to get some type of reply.
I had a bad feeling about the additional oil all over since I looked at another thread nowhere near that dirty. I will have to look at your recommendations. It does sound like it is going to be a bad seal/O ring. I planned on putting it in storage for the next 2-3 months so I'm in no rush to get it fixed. I rather have the piece of mind knowing when I am ready to take it out 2 weeks prior I can bring it to a shop and not get charged with lube rather than without, if you get what I mean!
Thanks for the reply. Surprised how long it took to get some type of reply.
Last edited by NJ_evoIXgsr; Apr 3, 2013 at 10:47 AM.
I know this may sound stupid but you are positive it is gear oil and not engine oil using the old greasy finger to nose test?
Edit: nevermind, sorry didn't see the drips initially.
Edit: nevermind, sorry didn't see the drips initially.
Last edited by satan's rx7; Apr 3, 2013 at 11:00 AM.
It's a bit hard for me to see in the pics but like blowngasket said its all over the place. Don't overlook more simple possibilities. That's a huge quantity, so what are the levels of stuff at? What do you keep topping off? The way the pics show the front of the tcase sprayed it looks to be coming from in front and covering everywhere in a misting style. Tthose bolts on the tcase are just the lowest place for anything to collect, but it doesn't mean it's coming from between there.
Breather is a good thing to test but since the spray is in front of the tcase it doesn't seem likely to me. It almost looks more like oil pan or filter housing spraying under slight pressure. From the pics the drips look coolest colored too.
I just troubleshot tcase and trans leak. I replaced the orings and seal between them. I now think it was a slow leak at the mivec oil pickup banjo bolt on the back of the block. It's about the right place, operates under pressure and would feed the tcase exterior oil that would eventually drip off the lowest bolts. Something to check. At just the right angle with a light you can see it from the driver side looking between the TB and block under the intake. You can reach your arm all the way down there too.
Good luck.
Breather is a good thing to test but since the spray is in front of the tcase it doesn't seem likely to me. It almost looks more like oil pan or filter housing spraying under slight pressure. From the pics the drips look coolest colored too.
I just troubleshot tcase and trans leak. I replaced the orings and seal between them. I now think it was a slow leak at the mivec oil pickup banjo bolt on the back of the block. It's about the right place, operates under pressure and would feed the tcase exterior oil that would eventually drip off the lowest bolts. Something to check. At just the right angle with a light you can see it from the driver side looking between the TB and block under the intake. You can reach your arm all the way down there too.
Good luck.
Last edited by fireroasted; Jun 24, 2013 at 08:56 AM.
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