[W126 Coupe] how difficult can it be to change a tire...

[Vedat Iplikci]

Mike, is it a bolt or nut??? AFAIK, the 126's have bolts, not nuts (at least mine does) Anyway, whichever it is, the most common recommendation would be to try some rust remover like WD40. But assuming this has already been done, more radical methods should be tried at the expense of the bolt/nut (which is already useless), like using two heavy duty chisels, two large hammers and four hands simultaneously, which should work most of the time. If that doesn't work, 
-IF IT IS A BOLT- (even if the bolt is broken) the last method would be to use a bolt extractor, which is a left-hand threaded and tapered steel part. You first drill a hole with a proper diameter (specified with the extractor) drill to the center of the bolt to be extracted, and then screw in the extractor. At a certain point it will be stuck because of the taper, and forcing it further will result in the bolt to be unscrewed free.
IF IT IS A NUT, then you may have to have the backplate replaced once the bolt is damaged.

Vedat Iplikci
1987 560 SEC Euro

P.S.: Most of the time, drilling the pilot hole will be the most tricky part because most possibly it will not be easy to start on the uneven surface of the broken/damaged bolt, but still can be achieved with some experience.
  ----- Original Message ----- 
  From: Jan Michael Kubr 
  To: Mercedes Coupes Mailing Lists 
  Sent: Monday, March 21, 2005 8:39 PM
  Subject: [W126 Coupe] how difficult can it be to change a tire...


  So I got a new set off BF Goodrich tires at costco ($381 installed) but 
  turns out they were unable to get one nut off on the front right tire. 
  They sent me to another shop but even they, after trying 3 different 
  guns, could not get it off.

  So once I find a shop that can get the damn thing off, most likely 
  something will have broken. Now I was told (and not having a service 
  manual handy) that if one of the bolts breaks, I'd have to replace the 
  backplate to which all five bolts are attached..  any truth to that?

  mike


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