hub or axle shaft joint? -
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Unread 07-29-2010, 01:50 PM   #1
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1979 CJ7 
Join Date: Jul 2010
Location: Burlington, Vermont
Posts: 935
hub or axle shaft joint?

Last night wheelin heard a loud snap/pop sound when stuck trying to get up over something while articulating. After getting past that now it pops every few seconds. Once i got to a clearing is turned hard right and backed up and it goes snap.... snap..... snap.... someone said it might be a blown hub which i have never heard but to me it sounds and feels like the u joint in the axle shaft. Any thoughts? What happens if you blow a hub? Being that plastic piece it wouldnt sound like this would it?

Wheel - Wreck - Wrench - Repeat!

The VIN says its a 79 CJ
79jeepincj7 is offline   Reply With Quote Quick reply to this message
Unread 07-29-2010, 02:23 PM   #2
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2005 TJ Wrangler 
Join Date: May 2009
Location: Vermont
Posts: 1,136
sounds like a u-joint. try to wiggle the u-joint around, there should be no play if it's good.
2005 Wrangler TJ, 3 1/4" RC lift, Cragar Soft 8's 32" BFG Mud Terrains, Smittybilt SRC D-Ring bumpers, Smittybilt XRC8 winch, Body Armor Rockcrawler side guards
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WANTED: SYE and cv shaft...good condition and good price. for a TJ with about 5-6" of lift.
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Unread 07-29-2010, 02:24 PM   #3
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1983 CJ7 
Join Date: Feb 2006
Location: Indianapolis, Indiana
Posts: 3,441
The front hubs are steel but the hub lockouts are a combination of parts.

The internals of the hub lockouts are not all plastic. The parts that actually apply force are metal but they can still break.

If it's the lockout, you should be able to see a cracked housing... replacement is easy since it bolts to the outside of the hub, however you'll need snap ring pliers.
Vibration? Bump steer? Wandering? Read the article (sticky) on Steering, suspension, and driveline.
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Unread 07-29-2010, 04:20 PM   #4
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1977 CJ5 
Join Date: Jun 2009
Location: Groton, Connecticut
Posts: 780
Dont need any snap ring plyers, lol. Just need a small flat head screwdriver. But sounds like something is wrong lol. See if it still makes the noise after unlocking the hub. Run diagnostic on it, test out things, all that fun stuff. We can give you ideas, but only you know the exact sounds, and where it was coming from.
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Unread 07-29-2010, 04:55 PM   #5
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1985 CJ7 
Join Date: Feb 2010
Location: San Marcos, Texas
Posts: 731
Sounds like a good time to pull it apart and use quality Spicer u-joints.
kakai81 is offline   Reply With Quote Quick reply to this message

axle , axle shaft , hubs , lockouts , stub shaft , ujoint

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