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Roaring sound from Newly install Third Member

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Old 07-01-2011, 05:26 PM
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Roaring sound from Newly install Third Member

So I put a new 3rd in my rear end and it was in touched came from a friends truck now its makin a roaring sound and its completely full with fluid it doesn't make an sense to me can some one tell me what's goin on
Old 07-01-2011, 05:36 PM
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Originally Posted by ol' blue
So I put a new 3rd in my rear end and it was in touched came from a friends truck now its makin a roaring sound and its completely full with fluid it doesn't make an sense to me can some one tell me what's goin on
so you put a brand new third in or a used one?
I am confused by the 'in touched came from a friends'? it was pulled from your friends truck?

If it was used, it sounds like the bearings are crap...if it was brand new someone did not set it up correctly and probably has too much preload...

fixing your thread title 'Little Help Please' can lead to deletion by the rules, make it more specific to your issue
Old 07-01-2011, 05:44 PM
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Ok sorry about that it was un touched he drove it till about 2 weeks ago un till a guy hit him in the front the reason I got it is because the one I had needed bearings
Old 07-01-2011, 05:45 PM
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Originally Posted by ol' blue
So I put a new 3rd in my rear end and it was in touched came from a friends truck now its makin a roaring sound and its completely full with fluid it doesn't make an sense to me can some one tell me what's goin on
The rear diff is set up wrong. Someone did not do it right. A properly set up diff will not make any abnormal noise. Send it to Zuk and be done with it unless he is still on vacation!!

http://www.gearinstalls.com/index.htm

James
Old 07-01-2011, 05:49 PM
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I've put it in and drove it for for 2 weeks now
Old 07-01-2011, 06:05 PM
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So, it was ok for 2 weeks. Now it's making a roaring sound.

Check the pinion nut for tightness/flange for looseness. Just a hunch...
Old 07-01-2011, 06:21 PM
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I'll try that
Old 07-01-2011, 06:45 PM
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If it didnt make any nosie for two weeks you have a bend axel thats y your other bearing burnt up it done the same to the new 1. My brother had the same problem went through 3 3rd members before we found out the problem.
Old 07-01-2011, 07:10 PM
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Just talked to my brother he said you just need to replace the whole rear end unbolt it from the leaf springs and put a new or used 1 in. He said hes 99.9% forsure

Last edited by baddest94; 07-01-2011 at 07:11 PM.
Old 07-01-2011, 07:17 PM
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Say huh? Ummm, who's your brother? Put him on the horn....or explain this to him for me would ya?

You're saying a bent axleshaft burnt up a carrier bearing in the 3rd member?

They aren't connected in any way to each other. The axleshaft, for lack of a better word, plugs into the side-gear. It never touches any other part of the 3rd member.

REPLACE THE WHOLE REAREND???

Dude, let's just forget you said that. Have we been?
Old 07-01-2011, 07:22 PM
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The drive shaft has a ding in it could it be that its unbalanced and causing problems
Old 07-01-2011, 07:43 PM
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My brother said he replaced passengers side axel and the 3rd member and never had a problem again the guy that brought the truck from him still hasnt had any problems from the rear end. Before replaceing the axel and that 3rd he burnt up 3 previous 3rd members in a two month period and all 3rds was in great operating condition.(This repair was done 3 years ago) If the driveshaft is bent that could be a possible issue.
Old 07-01-2011, 08:03 PM
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Mud hippy the spider gears and ring gear ride on the carrier bearing rite? The axelshaft connects into the side of the spiders if an axel is bent causeing the whole assybly to move other than were its pose to be moveing will cause wear on the carrier bearings rite? If im incorrect would somebody please chime in and explain to me how it works
Old 07-01-2011, 08:07 PM
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send it to MSR or ZUK!
Do it right never worry about it again.
Old 07-01-2011, 08:07 PM
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But could it be the driveshaft
Old 07-01-2011, 08:11 PM
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Man i aint an expert but i would think anything that could make anything vaibrate in there would cause damage. Did your do any thing besides take the 3rd out of your buddys truck and install in yours?
Old 07-01-2011, 09:06 PM
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Originally Posted by baddest94
Mud hippy the spider gears and ring gear ride on the carrier bearing rite?
No. Side gears are spinning freely within the carrier/differential assembly. The carrier bearings are on the outside of the carrier. If the axleshaft were bent then it could possibly cause wear on the side gear itself, the carrier, or the spider bearings. I have never seen a bent axleshaft anyways. They either twist or snap, they're a rumor as far as I care.

Originally Posted by ol' blue
But could it be the driveshaft
You'd feel it vibrating if it were out of balance. And it would take A LONG time before it would do any damage(if ever). Unless it was shaking so hard it rattled your teeth.

Last edited by MudHippy; 07-01-2011 at 09:07 PM.
Old 07-01-2011, 09:14 PM
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time for the dice roll...

Old 07-01-2011, 09:34 PM
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Originally Posted by WHAHAHAJR
time for the dice roll...

LOL thats great
Old 07-01-2011, 09:43 PM
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Mud hippy i aint sayn your wrong and im right, or your right and im wrong, Im just sayn that after going through 3 3rd members the bent axel was found and changed with the 4th 3rd member and there wasnt anymore trouble out of it even to this day the guy that bought the truck drives it with no problems what so ever outa the rear end.


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