Bad sounds left rear wheel - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

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post #1 of 27 (permalink) Old Aug 2nd, 19, 11:47 AM Thread Starter
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Juan Ma
 
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Hey everyone. My car sounds bad when I set rear back, sounds like "clack clack clack". It comes from left rear wheel and only happens when I'm going back and turn to right or left. I have uploaded a video on YouTube, you can hear at 16 second 16. I have no idea what part is the wheel is doing that sound. Could you help me guys?



https://youtu.be/Tl4WHouhp5c
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post #2 of 27 (permalink) Old Aug 2nd, 19, 12:08 PM
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Re: Bad sounds left rear wheel

Positive traction rear end? If it is then it might need an oil change. The clutches in the differential can cause this sound when the oil goes bad. I can't hear the noise where I am right now because there is too much noise around me. I'll listen closer when I get a chance.


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post #3 of 27 (permalink) Old Aug 2nd, 19, 2:13 PM
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Ed
 
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Re: Bad sounds left rear wheel

Sounded too continuous for sticking posi, but I couldn't tell. Can you feel anything when you hear that sound?
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post #4 of 27 (permalink) Old Aug 2nd, 19, 2:32 PM
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Re: Bad sounds left rear wheel

Posi rear end?

It sounds more like roller coaster going up the hill and clacking on the safety stop than a chattering posi clutches.

You can usually feel posi clutch chatter as much as hear it and it will chatter in forward and reverse usually.

I would probably pull the cover and check the spiders and gears including the pinion.

Rear end could probably use a service oil change any ways. Don't forget the whale snot if you don't find issue.

I wonder if that can be the brake drum shoe chattering???

Did this noise just appear? Have you been doing YouTube burn out videos?

Wait until Freddie can put an ear on it.
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post #5 of 27 (permalink) Old Aug 2nd, 19, 3:27 PM
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Freddie
 
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Re: Bad sounds left rear wheel

I got my earbuds out so I could hear better. I heard a little squeak just before the clicking, so I would check the u joints in the drive shaft first. Then I would pull the brake drum off and check for oil on the shoes and loose parts in the brake.
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post #6 of 27 (permalink) Old Aug 2nd, 19, 6:07 PM Thread Starter
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Juan Ma
 
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It's like a little hit and I can see a little movement in the wheel when it's happening. It seems a little hit in the wheel pinion
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post #7 of 27 (permalink) Old Aug 2nd, 19, 6:31 PM
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Re: Bad sounds left rear wheel

Quote:
Originally Posted by kanij0 View Post
It's like a little hit and I can see a little movement in the wheel when it's happening. It seems a little hit in the wheel pinion
If you see movement at the wheel then pull the tire and drum off and check how much axle play you have in the outer axle bearing.
Really slight in and out axle play is OK but up and down or side to side axle play is no good.
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post #8 of 27 (permalink) Old Aug 22nd, 19, 11:25 AM Thread Starter
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Quote:
Originally Posted by 71350SS View Post
Quote:
Originally Posted by kanij0 View Post
It's like a little hit and I can see a little movement in the wheel when it's happening. It seems a little hit in the wheel pinion
If you see movement at the wheel then pull the tire and drum off and check how much axle play you have in the outer axle bearing.
Really slight in and out axle play is OK but up and down or side to side axle play is no good.
I have checked it. In a and out it's ok like you said but there is a little movement up and down, 1 mm more or less. Is it enough to produce that noise?

I'm worried about the rear axle. I hope rear axle doesn't get damaged by bad bearing.
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post #9 of 27 (permalink) Old Aug 22nd, 19, 12:23 PM
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Re: Bad sounds left rear wheel

I think it's going to be the shims behind the spider gears but I would check out the brakes first.


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post #10 of 27 (permalink) Old Aug 22nd, 19, 10:49 PM
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Re: Bad sounds left rear wheel

Park the car, put it on jack stands under the rear axle tubes and take it apart to see what the problem is and good luck!!
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post #11 of 27 (permalink) Old Aug 23rd, 19, 12:13 AM
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Re: Bad sounds left rear wheel

Quote:
Originally Posted by kanij0 View Post
I have checked it. In a and out it's ok like you said but there is a little movement up and down, 1 mm more or less. Is it enough to produce that noise?

I'm worried about the rear axle. I hope rear axle doesn't get damaged by bad bearing.
If the bearing is ruining the axle the longer you drive on it the worse it will get.Like everyone said,Jack it up then secure the car with jackstands. Check the U-joint first cause its easiest.
Pull the tire off and then the drum.It could be some brake hardware in there that has come loose or it could be the wheel bearing eating away at your axle.
With the drum off check the axle for play,a little in and out is OK (isn't it always?) but up and down or forward and back is not that means the axle has to come out to inspect it and the bearing.
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post #12 of 27 (permalink) Old Aug 23rd, 19, 1:52 AM
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Re: Bad sounds left rear wheel

If it does not do it when backing in a straight line then it is definitely rear-end gears probably spider gears.


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post #13 of 27 (permalink) Old Aug 23rd, 19, 4:56 AM Thread Starter
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Juan Ma
 
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Are you talking about the drum?
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post #14 of 27 (permalink) Old Aug 24th, 19, 7:16 AM Thread Starter
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Juan Ma
 
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I have removed the 12 bolt rear end in order to Chech the axle bearing. I have never seen that springs in the rear end. You can see the axle in the photo
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post #15 of 27 (permalink) Old Aug 24th, 19, 8:50 AM
 
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Re: Bad sounds left rear wheel

Movement like that indicates a worn bearing. You will need to release the horseshoe retainer to remove the axle , then pull and replace the bearings , yes I said bearings. No sense in replacing only 1 side. They both likely been there the same amount of time. Good luck.
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