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Unread 11-11-2013, 05:37 PM   #1
71cj
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1971 CJ5 
 
Join Date: Sep 2013
Location: san martin, ca
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tranny/transfercase issue

hey I got a 71 cj5 with a 304 motor I believe it has a t15 3 speed and some sort of dana transfer case im guessing a 20 .anyways I went through and pulled the plug on the t- case and water came pourin out and its seized up I pulled the larger drain plug from the adapter to transmission full of water .anyways the jeep was 400$ and the motor runs .whats the best way to go about rebuilding this transfer case or should I look for a new one ..also if there was water in the adapter is it safe to say that it got in the transmission ?the transmission seems to shift fine but I haven't bactually driven the jeep.

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Unread 11-11-2013, 09:52 PM   #2
jrussblues
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Drain everything with fluids...replace the t case, prob a Dana 18 but could be anything depending on the p.o.'s modifications.
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Unread 11-12-2013, 06:32 AM   #3
82JeepCJ7
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You do have a Spicer 20 T-case in your Jeep. Here is some info to help you out.

http://www.novak-adapt.com/knowledge/t15.htm

http://www.novak-adapt.com/knowledge/model_20.htm
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Unread 11-12-2013, 12:23 PM   #4
71cj
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so replaceing the tranny and transfer case is the best option..not worth trying to rebuild them?
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Unread 11-12-2013, 01:13 PM   #5
LeePrather
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Quote:
Originally Posted by 71cj
so replaceing the tranny and transfer case is the best option..not worth trying to rebuild them?
I can speak for the dana 20. It's an easy rebuild. I tore it down and put it back in less than a day. I would clean it out and rebuild.
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Unread 11-12-2013, 01:15 PM   #6
LeePrather
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You may just need to clean up the insides and replace the gaskets and seals. $20 max.
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Unread 11-12-2013, 08:00 PM   #7
71cj
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that's what im thinkin the gears look good .is there a way to get the shift rails to be not seized up I can get them to move but I have to tap em with a rubber mallet.. http://www.jeepforum.com/forum/attac...1&d=1384311543
fs__shared_my_images_img_131112160522.jpg   fs__shared_my_images_img_131112160553.jpg   fs__shared_my_images_img_131112160632.jpg  
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Unread 11-12-2013, 08:04 PM   #8
LeePrather
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Quote:
Originally Posted by 71cj
that's what im thinkin the gears look good .is there a way to get the shift rails to be not seized up I can get them to move but I have to tap em with a rubber mallet.. http://www.jeepforum.com/forum/attac...1&d=1384311543
They have poppet balls and springs that lock the shift rods into place. Keep up with them. Use the rubber mallet. Just make sure you lube all the working parts up before you go to putting them back together. I used petroleum jelly on everything.
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Unread 11-12-2013, 08:07 PM   #9
LeePrather
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I would take it all apart and clean out that case with pressure wash and then dry it well. Wire wheel the outside on your drill. Make sure you have a good detailed manual, there are a few washers and then the rolling pins. Just make sure you get them back together right. I actually mounted my empty tcase to the tranny under the car and then built the gears from there. Very easy...
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Unread 11-12-2013, 10:13 PM   #10
jrussblues
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A working 20 is usually found fairly cheap...why go through the hassle?
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Unread 11-12-2013, 10:23 PM   #11
82JeepCJ7
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Dump all the used oil out and then pick up a gallon of kerosene. Fill the case with it and then move the shift rails in/out. They will loosen up. Dump the Kero out, flush with parts cleaner, and your done.
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Unread 11-13-2013, 03:24 AM   #12
LeePrather
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Quote:
Originally Posted by jrussblues
A working 20 is usually found fairly cheap...why go through the hassle?
I can't see going through the hassle of replacing a tcase without putting new gaskets and seals and checking the condition of the gears first. Just asking for headaches if you put in a used tcase without knowing what's inside...$20 instead of $20 + the cost and unknown of a used tcase?
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Unread 11-13-2013, 06:41 AM   #13
jrussblues
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Quote:
Originally Posted by LeePrather
I can't see going through the hassle of replacing a tcase without putting new gaskets and seals and checking the condition of the gears first. Just asking for headaches if you put in a used tcase without knowing what's inside...$20 instead of $20 + the cost and unknown of a used tcase?
Nothing wrong with insurance...I've only seen bad ones from water in the case. They are the best cases but pretty darn stout. Good time to twin stick while you have it down...much better than the single shifter.
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Unread 11-13-2013, 06:42 AM   #14
jrussblues
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Quote:
Originally Posted by jrussblues
Nothing wrong with insurance...I've only seen bad ones from water in the case. They are the best cases but pretty darn stout. Good time to twin stick while you have it down...much better than the single shifter.
*arent the best cases....typo
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Unread 11-13-2013, 04:58 PM   #15
71cj
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i think ill pull it apart and clean it up but im sure worried about the tranny bein full of water .it shifts through the gears maybe I can just clean it out
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