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Bad axle u-joint?

jeffncs

Contributor
Bronco Guru
Joined
May 4, 2004
Messages
1,894
Loc.
Raleigh, NC
When in 4H and driving in the snow, there was a rhythmic grinding sound. When backing up, the axle made a clunking sound.

Some more info…
Dana44
Hubs locked 2H - no noise
Hubs unlocked and all t-case positions - no noise
Rebuilt driveshaft - all new u-joints and CV
I replace the gear set and bearings 2 years back but this truck (almost) never goes in 4-anything. I built this one for my wife and she just cruises around town.
Didn't touch the axle u-joints

Does my assessment sound right?
 
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jeffncs

jeffncs

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Messages
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Raleigh, NC
Adding - oil status - housing has oil. Clearly been spinning as it has that aerated appearance.

IMG_0519.jpeg IMG_0518.jpeg

Note - the “sparkly” appearance is bubbles from spinning. Pinion bearing drag, pattern and backlash were all in spec so I’m doubtful there’s a gear or bearing issue.
 
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jeffncs

jeffncs

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Raleigh, NC
Front d/s may be shot…. The slip joint has a lot of play both up-down and sideways, plus it also have a fair amount of rotational play.
 
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jeffncs

jeffncs

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I’m going to either rebuild my spare stock d/s, find a good replacement to rebuild, or buy a new one. Eliminate that along with replacing those worn axle u-joints. I hate the idea of going into that D44!
 
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jeffncs

jeffncs

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Bronco Guru
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Messages
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Raleigh, NC
You hate it a lot less than waiting and you need it buy axles too after the joints fail. There is a smarter/brighter side lol
I’m gonna do it all over next week or 2. Ordered the axle u-joints earlier. Now hunting for a d/s. Guessing Tm Woods will see my CC swipe soon!
 

Speedrdr

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Nov 27, 2017
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Paris, MS
Sounds like one knuckle is bumping (interference/clearance) the other knuckle. Just my $0.02 opinion.
 
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