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Unread 08-05-2013, 06:44 PM   #1
meater
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Transfer case leak

Saw a nice little puddle of gear oil under the Jeep today. Looks like my transfer case has mysteriously started to leak.
Looks like its coming out of the bottom plate. Anybody know if there is a gasket that can be bought to remedy the problem (and where to buy it). I have a 1971 Scrambler. Drivetrain is all stock. So, I think it's a Dana 300. Thanks!

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Unread 08-05-2013, 06:47 PM   #2
walkerhoundvm
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There is, but it may only come as part of a kit: eBay Dana 300 gasket kit

Of course, I'm sure some guys just go with either RTV or some other adhesive gasket....anyone?
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Unread 08-05-2013, 06:50 PM   #3
meater
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Transfer case

image-1747011857.jpg
image-108531152.jpg

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Unread 08-05-2013, 06:56 PM   #4
walkerhoundvm
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Your guess is pretty good, but is there more coming from the rear output shaft?

It's doable on the hoof, but you really need to support the tranny and TC when you pull the skid plate. And clean the crap out of the mating surfaces with a razor and mineral spirits, use tacky sealant like Indian head gasket shellac on both sides of the gasket - just a little! Torque to specs.
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Unread 08-05-2013, 07:04 PM   #5
dg6772
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mine started that; it turned out to be the front output weeping and running down.

Dave in Muskegon
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Unread 08-08-2013, 03:00 AM   #6
meater
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Thanks guys. Getting on it after the weekend.
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Unread 08-08-2013, 03:38 AM   #7
brownbagg
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Quote:
Originally Posted by meater
Saw a nice little puddle of gear oil under the Jeep today. Looks like my transfer case has mysteriously started to leak.
Looks like its coming out of the bottom plate. Anybody know if there is a gasket that can be bought to remedy the problem (and where to buy it). I have a 1971 Scrambler. Drivetrain is all stock. So, I think it's a Dana 300. Thanks!
71 drivetrain from a scrambler, never knew they made them in 71,wont be a 300 then, npt in 71
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Unread 08-08-2013, 08:34 AM   #8
meater
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Oops. 81. Not 71. Typo.
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Unread 08-08-2013, 01:11 PM   #9
agear
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Quote:
Originally Posted by walkerhoundvm View Post
Your guess is pretty good, but is there more coming from the rear output shaft?

It's doable on the hoof, but you really need to support the tranny and TC when you pull the skid plate. And clean the crap out of the mating surfaces with a razor and mineral spirits, use tacky sealant like Indian head gasket shellac on both sides of the gasket - just a little! Torque to specs.

you dont have to pull the skidplate to pull the dana 300. It just hangs off the adapter housing.
Not intending to sound contrary...
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Unread 08-08-2013, 01:13 PM   #10
walkerhoundvm
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Quote:
Originally Posted by agear View Post
I think he meant the bottom cover on the t case. Not the skid

You must be better than me, because I doubt I'd be able to do that transfer case pan with the skid plate on.

/I probably wouldn't suggest using a razor and sealant on a skid plate, bro.
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Unread 08-08-2013, 02:39 PM   #11
agear
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Originally Posted by walkerhoundvm View Post
You must be better than me, because I doubt I'd be able to do that transfer case pan with the skid plate on.

/I probably wouldn't suggest using a razor and sealant on a skid plate, bro.
You sure ? I have plenty of room to get it off
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Unread 08-08-2013, 02:52 PM   #12
commadore64
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Quote:
Originally Posted by dg6772 View Post
mine started that; it turned out to be the front output weeping and running down.

Dave in Muskegon
Ditto.

Also, I did redo the gasket on my inspection plate and that started leaking also. Forget the gasket and use this stuff instead... worked great for me.

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Unread 08-10-2013, 05:25 AM   #13
pipster453
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I recently changed front and rear seals in my D300. I could not find a gasket for the pan so I RTVed it. No leaks after about 1000 miles.
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Unread 08-10-2013, 03:18 PM   #14
agear
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Originally Posted by pipster453 View Post
I recently changed front and rear seals in my D300. I could not find a gasket for the pan so I RTVed it. No leaks after about 1000 miles.
How do you go about cleaning and rtv-ing the bottom cover and what rtv did you use ?
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1984 jeep cj7, 258 I6, rebuilt T176,rebuilt Dana 300, amc 20 , dana 30, 4.10's Trac-lok in rear , 4.10's detroit soft locker in dana 30, 2.5 inch bds suspension lift, 1 inch polyurethan body mount lift. Line ex. weber carburetor. factory tach. factory clock ,oem replacement speedomter cluster, and oil pressure gauge, factory volt gauge.
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Unread 08-10-2013, 07:23 PM   #15
pipster453
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I scraped off the old RTV. Sanded the little surface rust I had with about 400 grit which also roughed the surface for the RTV. I used permatex Ultra Black. You can get it at any parts store.
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