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Is this a uni joint? 

 

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 Post subject: Is this a uni joint?
Posted: Sun Mar 21, 2010 4:45 pm 
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is the sound im getting a bad universal joint?
As i brake I get a thunk coming from around the diff area, usually happens when i am braking semi hard.
Same clunk when i go from Drive to reverse, or vise versa.
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 Post subject: Re: Is this a uni joint?
Posted: Sun Mar 21, 2010 5:43 pm 
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[quote="jrloz"]is the sound im getting a bad universal joint?
As i brake I get a thunk coming from around the diff area, usually happens when i am braking semi hard.
Same clunk when i go from Drive to reverse, or vise versa

Mate
Depending on th K's the car has done it could be the backlash in the diff. To check raise the car and grab one hand on the diff flange and the other on the tail shaft hold the flange and turn the driveshaft if there is movement change the universal also check the front universal. if no movement the diff needs re shimming

gassa

 

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 Post subject: Re: Is this a uni joint?
Posted: Sun Mar 21, 2010 5:49 pm 
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Ahk cheers!.
Have only had the car for about 25-30 thousand but it has done 200.
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 Post subject: Re: Is this a uni joint?
Posted: Sun Mar 21, 2010 6:58 pm 
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Also check brakes, and trailing arm bushes, too.

 

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 Post subject: Re: Is this a uni joint?
Posted: Sun Mar 21, 2010 8:20 pm 
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Breaks are all good, had them replaced since i bought the car. The sound was there when i bought it.

Trailing arm bushes? Im guessing they are the same as control arm bushes on other cars? Where the arm attaches to the car body?
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 Post subject: Re: Is this a uni joint?
Posted: Sun Mar 21, 2010 9:49 pm 
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I don't mean to be silly here but, are you SURE it is from the Rear? It might be from the front as Eseries are prone to work out strut rod bushes on the K frame.

And yes, the Trailing arms are the locaters of the Diff, there are 2 uppers and 2 lowers.
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 Post subject: Re: Is this a uni joint?
Posted: Sun Mar 21, 2010 9:51 pm 
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95% sure. If it helps i get a bit of a jolt to go along with the nasty sound lol.
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 Post subject: Re: Is this a uni joint?
Posted: Sun Mar 21, 2010 10:13 pm 
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Papa Smurf wrote:
I don't mean to be silly here but, are you SURE it is from the Rear? It might be from the front as Eseries are prone to work out strut rod bushes on the K frame.

And yes, the Trailing arms are the locaters of the Diff, there are 2 uppers and 2 lowers.


8 bushes in all........usually the ones that go 1st are the ones on the top trailing arms where they meet the body.
This is an example....from my ED.

 

 

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 Post subject: Re: Is this a uni joint?
Posted: Mon Mar 22, 2010 10:13 am 
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jrloz wrote:
is the sound im getting a bad universal joint?
As i brake I get a thunk coming from around the diff area, usually happens when i am braking semi hard.
Same clunk when i go from Drive to reverse, or vise versa.


Check for loose bowling balls in the boot! :D

 

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 Post subject: Re: Is this a uni joint?
Posted: Mon Mar 22, 2010 4:33 pm 
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Na the bowling balls in my boot are all tied down :P
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 Post subject: Re: Is this a uni joint?
Posted: Mon Mar 22, 2010 6:12 pm 
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Any tips for checking the trailing arms?
As they are fairly hard to check.

GASSA wrote:
Depending on th K's the car has done it could be the backlash in the diff. To check raise the car and grab one hand on the diff flange and the other on the tail shaft hold the flange and turn the driveshaft if there is movement change the universal also check the front universal.


Checked the rear and there seems to be no play in the uni joint. Seems to be a bit in the diff though.
Front there is a little bit of play, maybe a mm im able to move it back and forth.
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 Post subject: Re: Is this a uni joint?
Posted: Mon Mar 22, 2010 6:43 pm 
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Sound seems to be coming from the Diff as far as my ear can pick up.
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