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grinding turns : could it be the caliper?
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WILLF
 


Member Since: 29 Sep 2011
Location: Cape Town
Posts: 58

South Africa 2007 Discovery 3 TDV6 SE Auto Vienna GreenDiscovery 3
grinding turns : could it be the caliper?

This last beautiful weekend whilst cruising Chapmans Peak Drive in Cape Town - and ogling at about 25 new Porche 991's !!!? Twisted Evil cruising around on a publicity stint. Temp. was about 30.5­°C and the sea was turquoise... ANYWAY, I was saying.. Rolling Eyes
I turned a bend and heard grinding noise coming from my right front wheel. Sounded like a metal on metal brake grinding. Could this be a caliper scraping somewhere? If so, why?
I have just had new discs put on but the pads were still good so instructed them to leave them in.

It happened another 2 or 3 times whilst turning reasonably shasply at slow speed. It reminded me of my student days - riding the brakes until there was metal on metal, but I know it is not the pads this time.
  
Post #8671735th Dec 2011 10:17 am
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Gareth
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Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26774

United Kingdom 

Jack up the corner and check the wheel bearing for movement. Also, check for stones jammed in the brake.
  
Post #8671745th Dec 2011 10:20 am
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bigdave
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Member Since: 04 Jul 2008
Location: Cornwall
Posts: 9870

England 

Bump stop on the suspension may need greasing.

I had this a couple of years back but on both sides.

Turn the wheel on full lock to open up the suspension bits, you will see a round ish ball type of thing sticking out.

Stick a bit of grease on it and try it.

Just a thought.

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Post #8671815th Dec 2011 10:34 am
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CFB
 


Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100

United Kingdom 

I think Dave is referring to the steering lock stops, they can cause a grating noise but it would only happen on full lock when the stop physically touches the hub.
  
Post #8672225th Dec 2011 12:40 pm
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euangibson
 


Member Since: 24 Dec 2010
Location: Borders
Posts: 11027

Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

CFB wrote:
I think Dave is referring to the steering lock stops, they can cause a grating noise but it would only happen on full lock when the stop physically touches the hub.


That was the first thing I tried with mine,plenty of copper grease...unfortunately the grinding didn't go away and I ended up getting a new front diff..
 "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...

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Post #8672615th Dec 2011 2:43 pm
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John C
 


Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3292

United Kingdom 2006 Discovery 3 TDV6 SE Auto Cairns BlueDiscovery 3

Check the back plate isn't bent Thumbs Up I know logic says it would make a constant noise if it was, but mine bent and only made a noise when turning...
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Post #8672965th Dec 2011 4:04 pm
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WILLF
 


Member Since: 29 Sep 2011
Location: Cape Town
Posts: 58

South Africa 2007 Discovery 3 TDV6 SE Auto Vienna GreenDiscovery 3

thanks for the replies. What John is talking about is what it sounds like. Not an inner diff grind. Or a stone as Gareth mentioned. Will check on thurs. When I have some time. Thumbs Up

So is it a 'no' tn a damaged caliper?
  
Post #8674255th Dec 2011 7:39 pm
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