Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-30-2008, 11:31 PM
Registered User
 
Join Date: Sep 2008
Posts: 6
Bolt broke in manifold

I broke a bolt as i was installing a new supplementary air valve. The bolt is in the hole. i have tried to drill it out with a high speed stainless steel bit but the bolt is to hard. Does anyone have an idea how and what I can use to remove this broken bolt? Thanks for any help.

Reply With Quote
  #2  
Old 09-30-2008, 11:43 PM
Registered User
 
Join Date: Sep 2004
Location: Seattle
Posts: 1,934
Just as a basic reference, you can use heat, cold, solvent, impact. If there is anything at all sticking out you can try to grab on to it. Sears sells a variety of screw extractor sets. One important concept is that they all have reverse twist drills (they cut in reverse). That way if the drill digs in it will have a tendency to loosen the bolt not tighten it more. The hardness of the bolt sounds like a problem but maybe a fresh bit might work better. It shouldn't be so hard that you can't drill into it. I am not familiar with that specific bolt. Maybe someone else has a better idea. You could try searching. I have seen similar threads before about broken off bolts.
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
Reply With Quote
  #3  
Old 10-01-2008, 11:36 AM
Tomguy's Avatar
Vintage Moderator
 
Join Date: Aug 2002
Location: near Scranton, PA
Posts: 5,192
The type of bit you need is cobalt. It's the only bit hard enough to go through a bolt. Use plenty of oil while drilling, take it easy or you will burn up the bit. They are expensive but they will drill through it, I have had to do it for broken lug bolts.
__________________
Current:
2018 Chrysler Pacifica Limited
1999 Chrysler 300M - 214,141+ miles

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
Reply With Quote
  #4  
Old 10-01-2008, 05:54 PM
Registered User
 
Join Date: Jul 2007
Location: USA
Posts: 2,156
you need to drill and tap

__________________
1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 06:27 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page