Tranny Leak... - JeepForum.com

 
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post #1 of 12 Old 10-24-2013, 11:58 AM Thread Starter
TrucksBootsNGun
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Tranny Leak...

1988 4.0L 4x4 5 speed manual Drove from Flagstaff to Blythe, CA and got out to get gas a realized that the whole rear of the truck was covered in oil. I know it was the tranny because of the rough shift and there was no oil under the truck from before the tranny. Anyway through some oil in and some stop leak continued to Palm Springs. 3 days later drove all the way back to Flagstaff (gaining over 6000 feet in elevation lots of stress on tranny i would assume) arrived and check the rear of the truck and had much less oil on the back but there was still some there. My question is where is it coming from? I degreased it and cleaned it up and tried to isolate the leak. seems to be coming from everywhere. Also only leaks when its been running awhile and there is never a puddle of oil after it has been parked. Is there a seal that that has an especially high rate of failure?

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post #2 of 12 Old 10-26-2013, 03:47 PM
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Maybe the trans input seal? Coming out of the bell housing?

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post #3 of 12 Old 10-28-2013, 01:26 PM Thread Starter
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Bought a couple cans of degreaser and am cleaning everything I can find (its a lot of surface area) engine, accessories, tranny axles, etc. Check back when I found where its coming from.
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post #4 of 12 Old 10-28-2013, 02:47 PM
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Originally Posted by TrucksBootsNGun View Post
Bought a couple cans of degreaser and am cleaning everything I can find (its a lot of surface area) engine, accessories, tranny axles, etc. Check back when I found where its coming from.
How fun is that outside in the wind?

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post #5 of 12 Old 10-29-2013, 03:09 PM Thread Starter
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Cold. Also glad I brought up a spray painters mask with me so that stuff isn't getting all over my face. But it wasnt for nothing it appears to be leaking from the main joint that runs north to south on the bottom of the tranny. Guess I'm going to go see if any of the auto parts stores are having a sale on Barr's stop leak and gear oil.
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post #6 of 12 Old 10-29-2013, 04:17 PM
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Are the bolts/nuts loose?

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post #7 of 12 Old 10-30-2013, 12:58 PM Thread Starter
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i cant get them any tighter with the tools I brought up. Might be able to do better when I go home and have access to an impact.
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post #8 of 12 Old 10-30-2013, 02:30 PM
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Originally Posted by TrucksBootsNGun View Post
i cant get them any tighter with the tools I brought up. Might be able to do better when I go home and have access to an impact.
Be careful!!!

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post #9 of 12 Old 11-04-2013, 11:27 AM Thread Starter
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I don't plan on wailing on it, just double tapping it.
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post #10 of 12 Old 11-08-2013, 12:37 PM Thread Starter
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After degreasing and looking at it a few times now I am 98% positive that the leak its coming from between the tranny and transfer case. Since the transfer case takes ATF (which i believe is red) and the fluid is a definite an amber color not red Im gunna guess its the rear oil seal on the tranny.
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post #11 of 12 Old 11-08-2013, 03:27 PM
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Pull the t-case and adapter. Replace both seals. Hurry up before it snows!!

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post #12 of 12 Old 11-09-2013, 09:42 PM Thread Starter
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haha plan to when I go home for thanksgiving. Cuz out there i have a car lift inside the barn
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