Maintenance & Technical > KX500 Original

Dang allen bolts!!!

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KXcam22:
Good one Alan. That says it all.  As my rule of thumb, I always put anti sieze on bolts that go into aluminum and blue loctite on bolts that go into steel. Exceptions are antiseize on the brass tank/shroud inserts and the rubber exhaust mount threads. Has served me well. With the caliper being aluminum it will expand more than the bolt so some intense heat should work.  If you ever go to a brake/exhaust shop they heat almost every bolt to cherry red before they even attempt to remove them. Works. Cam.

demographic:

--- Quote from: alan on March 23, 2007, 02:02:02 AM ---Don't forget heat! In most all applications you will have dissimilar metals with different expansion coefficients. I often use a heat gun like some of the paint strippers. I soak the bolt with liquid wrench overnight, and then apply heat before I attempt removing it.

Remember if was seized and you finally got it out, you need anti seize compound when you replace it with a new bolt.

One more tip, I replace many problem bolts with Stainless Steel ones. This seems to also help the next time you have to remove one.

Finally if you can't get it out "drill it out". If you have a really good eye and a nice slow drill and can drill one step at a time to the clearance drill size for the tap of the thread. Many times as your drilling the heat from the drilling will remove the old thread as you are drilling. As you are increasing the drill size you can sometimes use an easy out to remove the thread, however they tend to expand the hole which makes for a sloppy fit and reduced holding capacity. You can always go to a Heli coil as a last resort or weld it up an re drill it!

Just my 2 cents!  :-D :-D :-D

--- End quote ---

Just one point, its not advisable to replace highly stressed high tensile steel bolts (like caliper bolts) with stainless as it has a lot lower tensile strength than the OE bolts.

Other ones are fine and i swap them over quite a lot.

MadKaw:
well, tried the square/drill a little/hammer it in/ back it out whith a wrench type of bolt extractor, it broke off in the bolt hole that I drilled. nothing I had was drilling thru that piece of extractor, as it was too hard( not hard enough for the bolt to come out though) he he he/. so anyeway, after becoming way too pissed to be coherent, I hit it with the map gas for a good minute. put the pipe wrench on it, had the wife hold the forks still and pulled til my eyes crossed. and CRACK it popped loose like it was concreted in place. did a little happy dance after that crap...

well add that one to your last resorts....and don't forget the happy dance!

alan:
Yep, good work! I hate screw extractors because the are way to hard and brake leaving you a bigger problem than you started with! :-o :-o :evil: :evil:

kx666:

--- Quote from: MadKaw on March 24, 2007, 10:00:39 AM ---well, tried the square/drill a little/hammer it in/ back it out whith a wrench type of bolt extractor, it broke off in the bolt hole that I drilled. nothing I had was drilling thru that piece of extractor, as it was too hard( not hard enough for the bolt to come out though) he he he/. so anyeway, after becoming way too pissed to be coherent, I hit it with the map gas for a good minute. put the pipe wrench on it, had the wife hold the forks still and pulled til my eyes crossed. and CRACK it popped loose like it was concreted in place. did a little happy dance after that crap...

well add that one to your last resorts....and don't forget the happy dance!

--- End quote ---
yah, i bought a cheep extracter set from sears once...i ended up having to use a snap-on left-hand drill bit from the guy across the shop from me to get it.

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