XK / XKR ( X150 ) 2006 - 2014

Alcon Brake issue

 
  #1  
Old 04-28-2019, 04:58 PM
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Default Alcon Brake issue

Hey guys, not been around for a while.

I have been getting some steering shimmy under braking - took the wheels off checked the disc run out with a dial gauge thinking I may have a warped rotor - all good.

I noticed that caliper was very close to the disc on the top end, removed the bolts and pushed the caliper back a little and noticed that there is signs of wear where the disc rotor has been rubbing. See pic:




There seems to no play in the bearings so I can't account for this.

Any ideas here?

Thanks - Mac
 
  #2  
Old 04-28-2019, 05:11 PM
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Forgot to add 2009 XKR.
 
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Old 04-29-2019, 01:57 AM
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If the rotor is making contact with your caliper I have no doubt your rotor is shot .

For future reference to any forum members if you get brake shudder on the brake pedal when applying the brakes it's read rotors if you get shudder through the steering wheel it's the fronts
 
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Old 04-29-2019, 12:54 PM
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Not sure how that would happen ... I would suggest making sure the caliper and bracket are seated correctly and torqued to spec.
 
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Old 04-29-2019, 01:14 PM
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Thanks guys. I've ordered a new rotor (the current one has very little wear). I'm going to pull the wheel off this afternoon and check the caliper mounting "system".

More later.
 
 
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