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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [xj-s] Re: Upper steering column and Ignition cylinder
At 11:51 06-07-98 -0400, Peter Cohen spoke: >These are called "shear bolts". They are supposed to be an anti-theft >device. When you bolt in the ignition cylinder, the heads of the bolts >shear off. You get them out by cutting a notch in them and knocking them >unbolted with a chisel or punch until you can get vise grips on them. As I indicated further down in my post, I determined that these were in fact some form of shearing bolt (not having previously encountered them), and that using a dremel to cut a notch in the top to simulate a screw head would likely be sufficient to remove them without mangling anything on the column. In fact, you could probably reuse them if you notched them into screws, though I wouldn't - a couple of hardened setscrews make for great replacements, and with the allen tool (short, 90'), are easier to install and remove. As for anti-theft, if the fellow has gotten into my Cat and gutted the lower panel to get access to the cylinder, he's probably done some damage, or already hauled the Cat away to do this work. When the column is in place, neither bolt is easy to access - the bolt formerly known as "easy to get to while the column is out" is blocked directly by some torsion bar running underneath the column, and the hard bolt to get to is even more of a pain. If the theif jumped in my Cat expecting it to be anything like others, he wouldn't expect to find "easy to remove" allen set screws, and would probably be more than prepared to handle the original anti-theft shear bolts anyway, so I don't think replacing them with allen set screws is really much of a loss of security. On this topic, does anyone know where I might find a counter-clockwise (oops, "anti-clockwise" for the folks back home), drill bit? That is, a bit which drills when the drill is in reverse. I'd imagine there are such beasts - I would think that they'd be rather useful when extracting bolts, since if the bit could catch enough to set the bolt slipping (unthreading), you're removing the bolt... --- <http://jaguar.professional.org/> Sean Straw '88 Jaguar XJSC 5.3L V12 Marin County, California '69 Buick GranSport 455 V8 Follow-Ups:
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