Rear clunk 1985 110 - Defender Source
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  #1  
Old November 15th, 2015, 05:44 PM
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Rear clunk 1985 110

Yesterday while driving home I turned slowly into the neighborhood and got a clunking sound which came from the rear. The sound continues now in more slower speed / turning / or light acceleration or deceleration situations.
So far I have found the self leveler unit had a small leak so I removed it. The clunk continues. Found sway bar ends were loose, tightened and no change. Inspected wheel bearing / axle play and nothing significant. All mechanicals are full / greased. Any ideas?
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  #2  
Old November 15th, 2015, 05:56 PM
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Rear A frame ball joint
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  #3  
Old November 15th, 2015, 05:57 PM
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What I was thinking. What is the best check?
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  #4  
Old November 15th, 2015, 06:45 PM
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You could get a pry bar in there and see if there is play in the joint
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Old November 15th, 2015, 06:50 PM
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that or axle flanges
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Old November 15th, 2015, 07:17 PM
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I have a video capturing the noise. Can't figure out how to post it yet. The clunk / pop appears center line on the truck. Checked all drive shaft bolts.
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1971 109 3 Door (Sold)
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  #7  
Old November 15th, 2015, 07:19 PM
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Start with wheel nuts...

Ask me how I know....
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  #8  
Old November 15th, 2015, 07:26 PM
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Quote:
Originally Posted by Rocky View Post
Start with wheel nuts... Ask me how I know....
Checked those.

------ Follow up post added November 15th, 2015 07:29 PM ------

Quote:
Originally Posted by Ncrover725 View Post
I have a video capturing the noise. Can't figure out how to post it yet. The clunk / pop appears center line on the truck. Checked all drive shaft bolts.
Anybody wants the video I will text it to you
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  #9  
Old November 15th, 2015, 08:03 PM
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The handbrake mechanism that's sticking can cause clunking at low speeds too.
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  #10  
Old November 15th, 2015, 08:04 PM
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Might remove the rear drive shaft to see if it goes away and more thoroughly check the UJ's.
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  #11  
Old November 15th, 2015, 08:18 PM
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Quote:
Originally Posted by 1of40 View Post
Might remove the rear drive shaft to see if it goes away and more thoroughly check the UJ's.
Might work on that after kids are in bed.
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  #12  
Old November 16th, 2015, 09:20 PM
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Crack up at the flange on the long shaft side. Not the complete problem though.

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Old November 16th, 2015, 09:20 PM
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Quote:
Originally Posted by tijnes View Post
The handbrake mechanism that's sticking can cause clunking at low speeds too.
Went through the brake. Not sticking.
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  #14  
Old November 16th, 2015, 09:39 PM
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if the wheel flanges are striping out the bang still comes from the center as the slack gets taken up. Took a short ride in one of my brothers 110's and asked him if the drive train bang didn't bother him- he came up to the shop scrounging wheel flanges a couple days later.

Easy to check, no need to pull anything apart, jack up one side of the axle-leaving the opposite tire on the ground, pull the grease cap and rotate the tire and watch the splines of the axle in the flange. I have seen trucks where you could rotate the tire a 1/4 revolution. Check both sides that way
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  #15  
Old November 16th, 2015, 09:44 PM
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Quote:
Originally Posted by Uncle Douglas View Post
if the wheel flanges are striping out the bang still comes from the center as the slack gets taken up. Took a short ride in one of my brothers 110's and asked him if the drive train bang didn't bother him- he came up to the shop scrounging wheel flanges a couple days later.
So I drove with the rear axle shafts out (drive shaft in) and am still getting a lesser of pop but with the same reverberation. I am thinking maybe the rear diff. (Salisbury)
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  #16  
Old November 16th, 2015, 09:47 PM
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Is your truck lifted ? Have you removed the rear prop shaft ? I have had shafts where the u joints were fine but the splined slide was shot and wobbling. Not saying it isn't your dana 60 but that's a damn tough diff and you really have to neglect one for a really long time to hurt it.
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  #17  
Old November 16th, 2015, 09:55 PM
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Quote:
Originally Posted by Uncle Douglas View Post
Is your truck lifted ? Have you removed the rear prop shaft ? I have had shafts where the u joints were fine but the splined slide was shot and wobbling. Not saying it isn't your dana 60 but that's a damn tough diff and you really have to neglect one for a really long time to hurt it.
The truck has a 2" medium TF coils. The prop shaft felt normal while attached. I will pull the shaft after work tomorrow.

------ Follow up post added November 16th, 2015 09:57 PM ------

I have the clunk recorded.. Just need to post the video somehow.
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