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Stripped Treads in Yoke XT600E 1994 Stripped Treads in Yoke XT600E 1994
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  #1  
Old 14 Nov 2010
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Stripped Treads in Yoke XT600E 1994
Came to adjust the front wheel / handle bar alignment and the found that the muppet who restored the bike had just epoxyed in a head of a cap screw the sheared tread of the old bolt still in the yoke

I’ve drilled and tried two types of stud extractor, heat, oil repeat etc no joy. Have now tried drilling the stud out, nearly got it, drill broke!

Any ideas? I could try a helical insert and smaller bolt, if I can get a drill in there again

If I can find a second hand top yoke in good condition I’ll go that route. Can’t seem to find a matching one, mine has the ignition switch mounted to one side (no rev counter) anybody know if the yoke from other models will fit without having buy a new ignition switch / steering lock.

any comments
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Old 14 Nov 2010
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I,d be looking on e bay,once the old drill is broke its a mare to remove it,its so hard to to grind out the broken drill and bolt unless your real good with the old dremel grinder...good luck.
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Old 15 Nov 2010
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Originally Posted by kenymact View Post
I,d be looking on e bay,once the old drill is broke its a mare to remove it,its so hard to to grind out the broken drill and bolt unless your real good with the old dremel grinder...good luck.
Thanks, mine seems a rear model:1994E (without the rev counter) yoke has an ignition bezel to right side Yam part No: 3TB-W2341-00
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Old 15 Nov 2010
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you dont say if its a handlebar riser bolt or a fork stanchion grip bolt, but you may still have some options, first you need to get the drill out. turn it over if you can and drill a small hole the other way throught the bolt till you get to the drill, then punch it back out. or, if you cant do that, you might be able to break it up in the hole with a punch.
now you can either carry on what your doing, drill the shank out and pick the bits of thread out with a scriber,
open it out and put a helicoil in (you cant just use the old thread to put a smaller diameter helicoil in, it doesnt work like that you need all the correct sized drills and taps),
drill it through and use a longer bolt with a nut,
open the hole out to the next bolt size up.

and cheap HSS jobber drills are cheese, invest in a good set of cobalt drills
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Old 15 Nov 2010
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It was the fork grip, I dremaled it, ground the stud out two bits of snapped drill also came out. Cleaned up ok with a tap, 70% of the tread intact and the new bolt holds good
Thanks for the support
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Old 16 Nov 2010
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If it's just one of the screws of the top yoke 70% good thread is fine as the top yoke doesn't do much work!

just ensure that everything else is tightened correctly, you check the steering stem bearings are good.
Clean them with pretroleum or gasoline, blow it or let it dry on it's on and apply new teflon grease!


Vando
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Old 19 Nov 2010
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Originally Posted by F.arch View Post
It was the fork grip, I dremaled it, ground the stud out two bits of snapped drill also came out. Cleaned up ok with a tap, 70% of the tread intact and the new bolt holds good
Thanks for the support
that was lucky then, nice one
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