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Unread 03-13-2015, 06:54 AM   #1
300cpilot
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Splitting the transfer case

I had my transfer case serviced a couple of weeks ago and now it is leaking, so either it was empty before or something happened during the service. The gasket on the bottom is where it is coming out. This is a 231. So the question is what surprises await me inside. Can I just take the case apart and then silicone it together again? Never been in one. Are there any special tools needed?

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Unread 03-13-2015, 08:52 AM   #2
Paradise XJ
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By "serviced" do you mean you had a shop take it apart and things messed with? Or did they just drain & fill the fluid? Then are you sure the drain plug is the problem and it's just running down to the bottom.

If it was the former, I'd hurry on back down there and ask THEM. Even if it was the latter, I'd still inquire as to what exactly they did. I have put a couple hundred thousand mile on my Jeeps and never had a leak from the T/C's, maybe I'm just lucky.
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Unread 03-13-2015, 11:12 AM   #3
kippo
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Not to hard to do. There are some good write ups on it. After you get it split you'll just clean up the mating surfaces and use red rtf and put it back together.
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Unread 03-13-2015, 11:18 AM   #4
kippo
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http://www.4wdmechanix.com/NP231-and...ld-Part-1.html

This is a good write up
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Unread 03-13-2015, 04:12 PM   #5
Timo_90xj
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TCs can start leaking from between the front & rear halves. As was mentioned, if it was just a drain & refill they most likely could not mess up anything that badly. If it was rebuilt, it's easy to mess up something.

..and yes, the only way to reseal your TC between the halves is splitting the case, cleaning it up really good, and then applying a bead of RTV (~1/8" thick bead around the whole front case half sealing surface; in circles around the bolt holes), reassembling the case, let it dry a couple hours before refilling.
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Unread 03-14-2015, 02:43 PM   #6
300cpilot
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Yea it was a drain and refill, the plug is tight and the oil is not from the plug. I'm really thinking that it was dry when I bought it? Wondering what I am going to find inside.

Thanks for the help!
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