Backlash in rear axle

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KWM338R
Posts: 189
Joined: Mon Jan 19, 2004 2:47 pm

Backlash in rear axle

#1 Post by KWM338R » Wed Jun 08, 2005 5:52 pm

how do i get rid of this if this is what the clonking turns out to be. I do need to check the prop shaft before i tear any thing apart.<br>
<br>
cheers<br>
<br>
Mark

<p>1979 Dolomite Sprint<br>
1972 TR6 (In its component form)<br>
1993 Mazda Protege ($250 Winter Hack)<br>
2000 Mazda MPV (For Sale)</p><i></i>

Chris Field
Posts: 116
Joined: Mon Jun 30, 2003 11:05 am

Re: Backlash in rear axle

#2 Post by Chris Field » Thu Jun 09, 2005 10:09 am

Backlash in the diff is measured with a dial gauge - we're talking thou here. Unlikely to be the cause of clonking I wouldn't have thought. Check prop ujs first and then all the usual culprits lkie trailing arm bushes etc

<p></p><i>Edited by: <A HREF=http://p206.ezboard.com/bthetriumphdolo ... club>Chris Field</A> at: 9/6/05 10:09 am<br></i>

KWM338R
Posts: 189
Joined: Mon Jan 19, 2004 2:47 pm

Re: Backlash in rear axle

#3 Post by KWM338R » Thu Jun 09, 2005 2:28 pm

thanks Chris, never thought of the trailing arm bushes, i'll try and get the car up on my friends lift and give it a good going over.<br>
<br>
Cheers<br>
<br>
Mark

<p>1979 Dolomite Sprint<br>
1972 TR6 (In its component form)<br>
1993 Mazda Protege ($250 Winter Hack)<br>
2000 Mazda MPV (For Sale)</p><i></i>

davepoth
Posts: 856
Joined: Tue Jan 20, 2004 9:46 pm

Re: Backlash in rear axle

#4 Post by davepoth » Thu Jun 09, 2005 2:29 pm

Check out the tie bars and bushes as well. I had one go on me and it was a pretty scary experience.

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BDN712V
Posts: 166
Joined: Sat Jul 19, 2003 10:50 pm

when...

#5 Post by BDN712V » Thu Jun 16, 2005 10:01 pm

...do you notice it most? Could it possibly be the exhaust catching and clobbering the underside of the car?<br>
Tim

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Jon Tilson
Posts: 1311
Joined: Sat Mar 08, 2003 8:28 pm

Sprint....

#6 Post by Jon Tilson » Thu Jun 16, 2005 10:20 pm

diffs are fairly strong on the whole and rarely go in road use...The excess backlash is caused by bearing wear and usually is accompanied by a whine on drive or on the overrun, depending on which one it is. The whine will vary a lot on drive load....maybe even going altogether when coasting or on a light throttle. Oil leaks dont help and maybe can be a first cause of the whiney bearing.<br>
So if its clonks its almost always other things...prop u/j's clonk but will usually cause a nasty vibration like a wheel out of balance rather than a clonk.<br>
Clonks are usually suspension bushes...metal to metal contact as the ruber finally gives up the ghost. Trailing arm or tie bar.<br>
Jonners

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