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Discussion Starter #1
I've been trying to figure this f 'n humming noise out for a while now. It happens when traveling 50 and 70 mph. I swapped out hub bearings twice (timken) then I tried going on 4x4 I have have manual locking hubs. It made noise wile in 4x4 clunking and squeaks. So found my hub locks were bad so I swapped out last night (warn) locks. And tried out this morning and its stil f'n their. I need help thanks
 

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The year and model of the truck will help.
 

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Have you Checked the universals?
50-75 is the speed where worn universals start warning you there is an issue
 

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Discussion Starter #5
I've been trying to figure this f 'n humming noise out for a while now. It happens when traveling 50 and 70 mph. I swapped out hub bearings twice (timken) then I tried going on 4x4 I have have manual locking hubs. It made noise wile in 4x4 clunking and squeaks. So found my hub locks were bad so I swapped out last night (warn) locks. And tried out this morning and its stil f'n their. I need help thanks
How do I check for that? Is it visually?
 

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both..
visually look for rust around the caps.
physically grab the driveshaft and see if it moves. usually the rust is the tell tale. i have seen universals that feel perfect, but fell apart when removed.
 

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Discussion Starter #9
Not giving up on her i swapped old universals for new one and I'm still hearing it no im starting to feel vibration as soon as I get close to 50 mph.
Differential???
 

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it could be.
 

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How are the front tires?
 

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Discussion Starter #12
The tires are good . I haven't rotated since I've bought them. I here the noice like its coming from the tires. But I can clearly here tge tires . Its something else besides the tire sound.
 
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