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Unread 05-09-2012, 06:35 PM   #1
chevypowered
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vibrates realy bad just in 4x4....

Hey whenever i put my cj7 in four wheel drive it vibrates really bad at like 5 mph and gets worst the faster i go. Defintally coming from the front. I'm guessing a bent axle shaft??? Its the stock dana 30 in it.

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Unread 05-09-2012, 07:22 PM   #2
SeaWulf
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Bent front driveshaft, maybe?
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Unread 05-09-2012, 07:43 PM   #3
skizriz
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Is it something that just started happening recently??
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Unread 05-09-2012, 07:45 PM   #4
wellmax
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my old jeep, 1984 cj

the front drive shaft U JOINT was worn out (the u joint that is connected to the transfer case).


have to ask the little neighbor girl to take the bolts out of that u joint, as she will be the only one with a hand small enough to work on the u joint.

also, it takes a special grease gun end to even grease that joint, guess that is why it worn out.
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Unread 05-09-2012, 08:18 PM   #5
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Yes it just started happening. I dont think its a u-joint but i will check them out. How hard is it to bend a axle shaft??? The jeep spends most of its time in the rocks amd mud. Thanks
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Unread 05-09-2012, 08:21 PM   #6
pman
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Quote:
Originally Posted by wellmax View Post
my old jeep, 1984 cj

the front drive shaft U JOINT was worn out (the u joint that is connected to the transfer case).
x2^^^^
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Unread 05-09-2012, 09:17 PM   #7
86cj74.2L
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The vibes on the 86 in 4 wheel drive was a combination of a bad u-joint on passenger side and a worn slip joint on the front driveshaft.
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Unread 05-10-2012, 05:50 AM   #8
chevypowered
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Quote:
Originally Posted by 86cj74.2L
The vibes on the 86 in 4 wheel drive was a combination of a bad u-joint on passenger side and a worn slip joint on the front driveshaft.
The slip joint on the front driveshaft i can wiggle all over so I'm guessing thats it. Those very hard to change out?
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Unread 05-10-2012, 09:39 AM   #9
foggybottombob
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Quote:
Originally Posted by chevypowered View Post
The slip joint on the front driveshaft i can wiggle all over so I'm guessing thats it. Those very hard to change out?
I never heard of replacing half of a drive shaft. I think you will need to replace your front drive shaft. It has 4 bolts on either end.
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Unread 05-10-2012, 10:18 AM   #10
Cutlass327
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You can get them rebuilt, just take it to any machine shop that does drive shaft work. They'll cut the old slip yoke off and put a new one on. But check around for a used one first, may be cheaper!
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1978 CJ5 258/T177/D300, '86 D30/D44 WT axles, 'glass tub windshield frame, and fenders, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

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Unread 05-10-2012, 12:15 PM   #11
twoleos617
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ive seen a few for sale in the classifieds lately for around $75
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Unread 05-10-2012, 09:57 PM   #12
chevypowered
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i have found a few drive shafts on ebay and craigslist that im going to look into. put the jeep on the lift this afternoon to give everything a good look over and found that the passenger side u-joint was bad as well. got everything apart and axle pulled out. gunna get parts tomorrow and get her back in the woods hopfully.
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