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big bang from rear axle

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Offline zukmonkey

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big bang from rear axle
« on: September 21, 2005, 01:27:15 PM »
hallo all, I'm new here and I have a problem with my 87 zuk. when I take turns in a slow speed my rear axle is banging hard. I'm not talking about click click click click. I mean big booms that cause the zuk to like disengage and engage from the t-case. I've driven withought the rear d-shaft in front wheel drive and it didn't happen. any Ideas?
Is it the third or what?

Thanks.
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Offline chet

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Re: big bang from rear axle
« Reply #1 on: September 21, 2005, 02:17:43 PM »
I would bet you have a tooth off either the ring gear or pinion gear. Time to pull the rear third.
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Offline SnoFalls

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Re: big bang from rear axle
« Reply #2 on: September 21, 2005, 03:29:26 PM »
x2
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Offline 1bigtracker

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Re: big bang from rear axle
« Reply #3 on: September 21, 2005, 04:29:55 PM »
do you short shift that thing or somthing?  we beat our zukis bad and don't break alot of R&P's

Stu
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Offline zukmonkey

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Re: big bang from rear axle
« Reply #4 on: September 22, 2005, 08:41:14 AM »
o.k guys how's this - I've pulled it out and checked everything. all teeth are acounted for and backlash is good. and I think that if I had a broken tooth than I would feel something when I drive straight. No?
any way could the problem be from a crooked birfield?
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Offline purevil71

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Re: big bang from rear axle
« Reply #5 on: September 22, 2005, 08:52:35 AM »
may seem like a dumb question, but are your U-Bolts tight??  If they are slipping just a little, that could be where it's at.
Also, what's your U-joints in your D-shafts look like?  Binding of these could also cause it to pop and bang like crazy, but I would think it would have blown by now if that were the case.
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Offline hcgalvin

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Re: big bang from rear axle
« Reply #6 on: September 22, 2005, 09:55:46 AM »
Quote from: zukmonkey on September 22, 2005, 08:41:14 AM
o.k guys how's this - I've pulled it out and checked everything. all teeth are acounted for and backlash is good. and I think that if I had a broken tooth than I would feel something when I drive straight. No?
any way could the problem be from a crooked birfield?

There's no birfields in the rear.

Do you have a lockrite (auto locker)?
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Offline zukmonkey

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Re: big bang from rear axle
« Reply #7 on: September 22, 2005, 10:11:06 AM »
u bolts tight and u joints new in all of the shafts. I do have a lockright but I took it out and put the regular diff in and it does the same thing. I think maybe my gear or pinion are crooked or maybe an axle.
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Offline SnoFalls

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Re: big bang from rear axle
« Reply #8 on: September 22, 2005, 10:45:26 AM »
bent axel housing? ... that would cause some serious banging while turning.
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Offline 1bigtracker

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Re: big bang from rear axle
« Reply #9 on: September 22, 2005, 12:47:34 PM »
Quote from: SnoFalls on September 22, 2005, 10:45:26 AM
bent axel housing? ... that would cause some serious banging while turning.
my guess

Stu
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Offline zukmonkey

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Re: big bang from rear axle
« Reply #10 on: September 22, 2005, 01:40:31 PM »
why would make a noise on turns and not all of the time?
From just looking at it it doesn't seem to be bent but i guess I'll have to check it and the axle and the gear.
Thanks for the ideas.
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Offline purevil71

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Re: big bang from rear axle
« Reply #11 on: September 22, 2005, 09:24:16 PM »
Be sure and let us all know what you find, so we can sit around and go...
"OH YEA...I was gonna say that!" ;D
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