Help!!
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Tourer
Joined: May 2014
Posts: 414
Likes: 8
From: NJ
Help!!
I was reinstalling my shift lever on my street bob, and the bolt snapped. You can see the break in the gap between the threaded and unthreaded portions of the bolt hole. I was thinking to drill the bolt with 1/4 in drill bit. Then try and thread tap using 5/16 18 tap. Any suggestions? The lever came back from powder and I think some powder got into the threading.
Road Captain
Joined: Apr 2013
Posts: 600
Likes: 10
From: Rochester, NY
In the future when you get parts back from powder you may need to ream all non-threaded holes and tap all threaded holes. Sometimes powdercoaters will plug holes prior to powder coating and/or clean up the holes afterwards, but you have to talk to them about it beforehand.
What you need is a bolt extracter like the following:
http://www.autozone.com/test-scan-an...es/246368_0_0/
What you need is a bolt extracter like the following:
http://www.autozone.com/test-scan-an...es/246368_0_0/
Last edited by enodrano; Nov 3, 2015 at 09:30 AM.
Road Warrior
Joined: Dec 2010
Posts: 1,629
Likes: 46
From: East Hartford, CT
You can drill it with your 1/4 inch drill. maybe enough will drill out just to retap it.
5/16-18 tap drill uses a letter F .256 dia drill. the 1/4 should work for you.
Use a center drill to start central if you can.
5/16-18 tap drill uses a letter F .256 dia drill. the 1/4 should work for you.
Use a center drill to start central if you can.
Cruiser
Joined: Nov 2015
Posts: 192
Likes: 20
From: MN
You can also try and heat the area up around the broken bolt until it is super hot, then melt wax onto the broken bolt and hopefully penetrate down the treads . When it cools ( you have to wait until it cools), sometimes the wax will provide just enough of a barrier to help remove it with a LH drill bit or extractor. Used this trick several times on automotive exhaust manifolds and headers w/ success. Good Luck.
Seasoned HDF Member
Joined: Dec 2009
Posts: 9,162
Likes: 1,906
From: Doghouse... mostly
You can also try and heat the area up around the broken bolt until it is super hot, then melt wax onto the broken bolt and hopefully penetrate down the treads . When it cools ( you have to wait until it cools), sometimes the wax will provide just enough of a barrier to help remove it with a LH drill bit or extractor. Used this trick several times on automotive exhaust manifolds and headers w/ success. Good Luck.
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Tourer
Joined: May 2014
Posts: 414
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From: NJ
It sure does! Going forward, I will test any parts BEFORE mounting on the bike. I could simply have ran a thread tap and avoided all of this!
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Road Warrior
Joined: Dec 2010
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From: East Hartford, CT