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Unread 09-22-2010, 04:13 AM   #1
staush
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Front axle engagement

don't know much about the vacum dis-connect but,on mine two vacum hoses are missing but the 4 wheel drive seems to engage.I haven't had it mudding yet just going by the way the front tires grab when you hit solid ground.Any ideas?Want to go muddin' but would like things to work when I need them.Thanks

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Unread 09-22-2010, 06:04 AM   #2
johnboy68
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Search - There are a lot of threads already that show you how your Center Axle Disconnect (CAD) works and how to test it to make sure it's engaging.
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Unread 09-22-2010, 06:10 AM   #3
Jeffro06
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If you're not the original owner it could be that the two piece axle has been replaced with a TJ shaft, thus eliminating the disconnect.
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Unread 09-22-2010, 07:27 AM   #4
staush
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Something else,I noticed when I replaced ball joints and put axles back in when I turned them(both sides) the drivesaft turned.Normal?or does it mean something?
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Unread 09-22-2010, 07:31 AM   #5
vanwyk4257
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Someone could also have manually moved the shift fork in the front axle and re-inserted one of the e-clips to permanently engage the collar on the 2-piece axle on the passenger side.
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Unread 09-22-2010, 07:34 AM   #6
staush
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not to sound?but what does that mean?
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Unread 09-22-2010, 07:54 AM   #7
vanwyk4257
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There is a shift fork inside the CDA housing where the vacuum lines normally connect. The vacuum motor moves the shift fork back and forth sliding a collar either engaging or disengaging the 2-piece passenger side front axle. The shift fork rides on a shaft and is held in place laterally by two e-clips. It is possible to remove an e-clip, move the shift fork to the "locked" position and reinsert the e-clip, thus permanently engaging the front axle. Hope that helps.
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Unread 09-22-2010, 07:59 AM   #8
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Here is what you should do. this will be educational for you and allow us to tell you whats going on with your pile.

On the passenger side of the front axle, look at the vacuum disco box on the back side of the axle tube. 4 bolts hold that box in place. removed those 4 bolts with an oil catch pan under the it. The entire vacuum disco cover will come off

here is what it looks like with the cover off. This is Stock.





what do you see on yours? If it looks just like my picture in your axle tube. Look in the cover you removed, take a picture of the fork and actuator rod and post it up.
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