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4wd inop

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Old 12-29-2010, 11:55 AM
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Default 4wd inop

last night my 4wd was working fine, i went out this morning and it doesnt work now, the 4wd light comes on but no power from the front axle, is any common issues i should look for? its currently snowing and would like to resolve this so i can get around...thank you, its a 87 cherokee chief with the 4.0 and 5 speed trans
Old 12-29-2010, 12:33 PM
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https://www.cherokeeforum.com/f2/4-w...ick-fix-44715/
Old 12-29-2010, 12:40 PM
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Check your Central Axle Disconnect. Common problem on older Cherokees
Old 12-29-2010, 12:40 PM
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Most likely the vacuum lines. Start there.
Old 12-29-2010, 04:07 PM
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the central axle disconnect? is that everyone is "locking" in on the front diff by clamping it or flipping the bracket around? and all the vaccum lines looked in tact and ok
Old 12-29-2010, 04:41 PM
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The diaphragm cracks and wont hold the fork and collar over. Test it with a pump-- the switch is probably ok since you said the light comes on. Easy and cheap repair!!
Old 12-29-2010, 04:46 PM
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https://www.cherokeeforum.com/f51/fr...ss-91-a-38629/

Or,

Home made POSI LOCK write up - JeepForum.com
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