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Old 26-11-2012   #1
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Knocking noise from rear n/s wheel

Hello everyone

I have read up on several thread about knocking noises but they all seem to be related to bushes etc. my issue is slightly different

Basically the old girl has developed a knocking noise per wheel rotation. doesnt matter if you go 2mph or 30 the knock is there and it can be felt if you hold the bandbrake whilst driving.

So, last night i took off the rear wheel and inspected the bub assembly, removed the front cover of the hub assy and everything looks fine... no obvious damage to pads, nothing looks like its moved or has broken.
i ensured that the bearing turned true and was not stiff in anyway and it seems fine.

does anyone else have any idea what this could be ? Im hoping to get my proper jack out later and jack the whole rear end up so i can look at both wheels at the same time but will have to wait till after work.

BTW this knock developed almost instantly ( i think when i drove the car in the morning it was not there and on the return trip it appeared.)

Thanks in advance

Tangoed
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Old 26-11-2012   #2
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Re: Knocking noise from rear n/s wheel

Does the Knocking increase with Speed as you drive faster?
or does it stay the same pace?

Have you checked the rear struts for worn out bushs?

No buldges on the rear tyres?

And the exhaust backbox is still secure the rubber hasn't snapped one side causing it to swing and keep hitting the rear beam?

Ziggy
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Old 26-11-2012   #3
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Re: Knocking noise from rear n/s wheel

hi ziggy.

knocking noise is related to speed. faster I go... it goes. it's exactly 1 knock per revolution of the wheel. I'm getting a bit of grinding noise if I pull the hand brake up a bit whilst moving which I'm sure wasn't there before...

I replaced the handbreak cables about 4 months ago and she has been fine so far.
no obvious bulges from tyres or nails .. sound a lot more 'thudy' than that
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Old 26-11-2012   #4
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Re: Knocking noise from rear n/s wheel

well I'll be darned! took both rear wheels off and noticed the hand brake cable I replaced not that long ago had decided to detach itself from the metal guides that hold it away from the wheel and on to the main rear cross beam !

so that huddling noise was a blooming wheel weight chewing away at the outer of the handbrake cable!

note to all Then..... if you change your handbrake cables, make sure they are fixed in place with some cable ties!
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Old 26-11-2012   #5
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Re: Knocking noise from rear n/s wheel

Quote Originally Posted by Tangoed View Post
well I'll be darned! took both rear wheels off and noticed the hand brake cable I replaced not that long ago had decided to detach itself from the metal guides that hold it away from the wheel and on to the main rear cross beam !

so that huddling noise was a blooming wheel weight chewing away at the outer of the handbrake cable!

note to all Then..... if you change your handbrake cables, make sure they are fixed in place with some cable ties!
note to all
use the factory clips located in beam axle
if they gone walkies then use tie clips but be aware the cable needs some movement so dont tighten up the tie clip to oblivion
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Old 26-11-2012   #6
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Re: Knocking noise from rear n/s wheel

Happened to me, I find with replacement cables that they work free of the original manufacturer clip (which tends to disappear to rust)

Like said before, don't tighten cable ties too much, or it will eat your handbrake cable too.

I made a little sleeve out of thick rubber as a pad to hold it onto the rear suspension beam
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Old 26-11-2012   #7
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Re: Knocking noise from rear n/s wheel

s & b... I did use factory clip positions when I installed them.. I'm not that silly.

they managed to work loose so used a bit of old hose to created a sleeve to protect the outer from the cable tie cutting in
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Old 26-11-2012   #8
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Re: Knocking noise from rear n/s wheel

Hose pipe is a good product to use for handbrake cables
Its thick - hard wearing and the handbrake cable can slip through quiet easily

so you can allow the cable to be retained into place without it bunching up

Ziggy
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Old 26-11-2012   #9
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Re: Knocking noise from rear n/s wheel

Quote Originally Posted by Tangoed View Post
s & b... I did use factory clip positions when I installed them.. I'm not that silly.

they managed to work loose so used a bit of old hose to created a sleeve to protect the outer from the cable tie cutting in
you bend them over the cable
they wont come out then
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