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Unread 08-01-2011, 06:05 PM   #1
Taylorwoodham
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1984 XJ Cherokee 
 
Join Date: Aug 2011
Location: Ruston, La
Posts: 4
HELP! rear end knock in an 84 cherokee

So this story begins with me getting a hold of an 84 Cherokee for $600! The Jeep was advertised as having some rear end trouble but running fine otherwise. So, I go take a look at it and can't believe this guy only wants $600 for the old girl. Get it home and start tearing it apart. With the previous owner claiming the rear end was shot I was planning to just go ahead and swap for a bigger axle but decided to crack the pumpkin open to take a look at the carnage! To my surprise, everything looked fine! So I seal it back up and put some new fluid in it and take the jeep for a quick spin around the block. Upon accelerating from a stop there is a faint bump from the passenger side rear and when I go to stop it starts hitting HARD! the thumping from the passenger rear that is. So my question to y'all is what the heck is that and how can I get it to go away hahaha. And a bit of extra info, the previous owner said something about it leaking oil on the passenger rear tire??? My guess is the oil he was seeing was brake fluid and this knocking is coming from either my passenger rear wheel bearing or the passenger rear brake drum has something going on with it. Anyway, I'd love to hear what y'all think about this one. Thanks in advance for the help!

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Unread 08-01-2011, 06:20 PM   #2
XJmallcruiser
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1998 XJ Cherokee 
 
Join Date: Jun 2011
Location: Orange grove, Tx
Posts: 374
Sounds like the right side wheel bearing and sounds like the seals shot ... May need the axle replaced if the bearings real bad... had to on my old k5 blazer
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Unread 08-01-2011, 06:47 PM   #3
jeepdavetj
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1991 XJ Cherokee 
 
Join Date: Jun 2008
Location: Campobello SC
Posts: 3,398
If it has been leaking brake fluid, your RR shoe is probably shot and grabby and gumbed up. When you take off the springs retract and that is the "thump" your hearing. When you hit the brakes its grabs HARD. Pull the tire, pull the drum, look at the brakes. That is probably the problem I would bet.
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Unread 08-03-2011, 12:34 AM   #4
Taylorwoodham
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1984 XJ Cherokee 
 
Join Date: Aug 2011
Location: Ruston, La
Posts: 4
Drum good? Bearing shot!

So I pulled off the tire and drum cover to find a slightly rusted but still in good working order drum. After taking the drum completely apart and putting everything back together with lots of brake cleaner, I went ahead and pulled the rear pass. axleshaft. After I got it out it was pretty clear that the wheel bearing was DONE! I mean it was wrecked and shredded everywhere! But luckily the axleshaft seemed to be in good condition. Anyway I couldn't get the bearing off myself so it's off to a local shop in the morning with shaft in hand (that's what she said) to see if they'll pull the old bearing off and press a new one on for me (already have the new bearing and outer seal). Thanks for the input guys I'll let y'all know how it turns out!
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Unread 08-03-2011, 04:15 AM   #5
XJmallcruiser
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1998 XJ Cherokee 
 
Join Date: Jun 2011
Location: Orange grove, Tx
Posts: 374
Glad you figured it out... I figured thats what it was
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