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Unread 08-06-2013, 08:55 PM   #1
jimhill
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1989 YJ Wrangler 
 
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My 4wd wont work

My 4wd won't work and a friend said I could just turn the vacuum around and it will work. What does this mean? And how do I do it?

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Unread 08-06-2013, 08:57 PM   #2
Anticanman
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There's a link inside this thread

http://www.jeepforum.com/forum/f12/t...80/?highlight=


You may need to have your driveshaft up front balanced if you've got some vibrations.
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Unread 08-06-2013, 09:08 PM   #3
jimhill
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Quote:
Originally Posted by Anticanman
There's a link inside this thread

http://www.jeepforum.com/forum/f12/t...80/?highlight=

You may need to have your driveshaft up front balanced if you've got some vibrations.
Thanks and I just got a new driveshaft
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Unread 08-07-2013, 05:02 PM   #4
tdewit
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Also something I may point you at:

http://www.jeepforum.com/forum/f12/4...nally-1534273/
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Unread 08-07-2013, 06:15 PM   #5
Old4X
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Probably just rotted out vacuum lines. 25 years old is way past their expire date.
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Unread 08-07-2013, 06:19 PM   #6
jimhill
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1989 YJ Wrangler 
 
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Quote:
Originally Posted by Old4X
Probably just rotted out vacuum lines. 25 years old is way past their expire date.
Thanks ill look into that to
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Unread 02-11-2014, 02:51 PM   #7
jimhill
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What is the fluid that comes out of my shift motor?
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Unread 02-11-2014, 03:20 PM   #8
XJ93
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You mean the vacuum motor? That is just gear lube, don't worry about replacing the small amount that leaks out, but I would do a drain and refill of the front and rear diffs just to get a look at the gears and make sure everything looks good.
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Unread 02-11-2014, 03:41 PM   #9
jimhill
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Quote:
Originally Posted by XJ93
You mean the vacuum motor? That is just gear lube, don't worry about replacing the small amount that leaks out, but I would do a drain and refill of the front and rear diffs just to get a look at the gears and make sure everything looks good.
How would I do this?
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Unread 02-14-2014, 02:45 PM   #10
brianandcara
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Put a pan under the diff and pull the bolts. Clean the old gasket/rtv off, install new gasket/rtv. Remove fill plug and fill it up with gear oil till the oil runs out of the plug hole. Also you can pull the shift cover off the axle, pull the clip off the shaft that holds the fork in place (carefull the things are easy to loose) slide the fork over, re-install the clip, slide the shift collar to the engaged position and re-install shift cover.
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Unread 03-17-2014, 01:34 PM   #11
jimhill
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Quote:
Originally Posted by brianandcara
Put a pan under the diff and pull the bolts. Clean the old gasket/rtv off, install new gasket/rtv. Remove fill plug and fill it up with gear oil till the oil runs out of the plug hole. Also you can pull the shift cover off the axle, pull the clip off the shaft that holds the fork in place (carefull the things are easy to loose) slide the fork over, re-install the clip, slide the shift collar to the engaged position and re-install shift cover.
I ended up getting posi lok
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