Jump to content
Email-only Log-Ins Coming in December ×

IGNORED

Broken Bolt


Wally

Recommended Posts

was taking off the water inlet and the bottom bolts head snapped off like butter. I hit the bolt with lots of penetrating oil and let it sit. got some vise grips on bolt sticking out and it snapped off. 

Drill small hole in center of bolt put in an extraction bit that was hardened steel. More penetrating oil. First turn the extraction bit broke of in the bolt hole. SIGH.....

Any thoughts?

Link to comment
Share on other sites


I have had luck removing broken extractors using a pin punch to break them up, removing the broken pieces  as I go. It is a tedious process.

You may also try using a center punch, dimpling the center of the extractor, then try drilling it out with a left twist drill.

  

 

Link to comment
Share on other sites

A Small carbide burr in a Dremel (the second from the right, ball shape) will be able to eat away at the extractor. Get real Dremel ones if you can, or from a trusted shop. Lots of cheap "carbide" crap out there.

 

Wolfride 10pcs 1/8" Shank Double Cut Rotary Burr Set for Dremel Rotary Tool  Tungsten Carbide Cutter Rotary Burr Set for Metal Polishing,Carving:  Amazon.ca: Tools & Home Improvement

I threw all my extractors away. Never ever had one work for me. 

Drill the broken bolt out then re-tap or heli-coil. Yes it's tough to drill in the center. 

  • Like 1
Link to comment
Share on other sites

I love this thing

OTC Drilling Guide Systems 6982DGS

it keys off an existing good hole on the same plane as the one you are working on. use is AFTER you figure out how to get the extractor out. Agree never had luck with extractors, maybe its the cheap ones I have used in the past. I also popped for an induction heater the heat bolts 1st. This all cost a lot of $$$ but the saving in aggravation is worth it.

watch out for water pump bolts as well, same thing.

Edited by Dave WM
  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Who's Online   1 Member, 0 Anonymous, 503 Guests (See full list)

×
×
  • Create New...

Important Information

By using this site, you agree to our Privacy Policy and Guidelines. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.