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 ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 09-07-2000, 09:00 PM
Karl Rich
Posts: n/a
Just striped out one of the torx head bolts trying to pull the head on my 190E, any suggestions?
Reply With Quote
Old 09-07-2000, 10:22 PM
Posts: n/a
where did you break it at? Are the threads stripped or did it break off?
Reply With Quote
Old 09-08-2000, 02:54 AM
Registered User
Join Date: Mar 2000
Posts: 532
If the bolt's torx bit internal mating surface is worn or damaged, try using an "Easy-Out" bit.
Reply With Quote
Old 09-08-2000, 11:22 AM
Registered User
Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
This is a difficult removal process. If you can find an easy out large enough to fit the capscrew, then give it a try. I hope you are successful. Two other alternatives I know of that work. Grind grooves in the head of the bolt so it ends up looking like a big phillips screw and use a piece of hardened tool steel in the grooves to "unscrew" the bolt. This will require a long attachment for your "screwdriver" to generate sufficient leverage. The second method works (I tried it successfully. Tack weld a cap screw onto the stripped headbolt and use that to remove it. Your welder will have to be careful to avoid damaging the head, but it can be done. Personally I like option one, but I haven't trid that one yet. One other option, if you can get a pipe wrench on the bolt head, that may work, but usually there isn't enough room for that trick..

Jeff Lawrence
1987 300e
1989 300e
2000 Dodge Grand Caravan SE
Reply With Quote
Old 09-08-2000, 09:55 PM
dakota's Avatar
Moof !
Join Date: Jul 2000
Location: Seattle WA USA
Posts: 469
This is too late now, but a trick I use when I run in to a bolt that is really hard to loosen (and before I strip the bolt or nut), is to give it a sharp rap or two with a ball peen hammer axially - not side to side. This will often break the bolt loose and allow you to remove it with your wrench normally. Of course you must use caution and common sense as to how hard you hit the bolt and how you strike it...making sure you don't damage the bolt head, the material it's bolted into (soft aluminum?) and surrounding objects.

As far as extracting a stripped bolt, I find that ez-outs are very difficult to make work. Make sure you don't end up with a broken case-hardened ez-out stuck into the top of your stripped bolt.

The method that Jeff mentioned is the one I've had the most luck with. Sometimes, if you have enough access, a hacksaw can be used to cut a slot into the top of the bolt head.

Of course if none of these methods work, you probably will have to drill out the bolt completely....a difficult task at best (and really a pain if you have broken off an ez-out in the bolt). You have to use a pilot hole first *exactly* in the center of the bolt and then use a big enough bit to get most of the bolt, but not the stuff it's bolted into. If you damage the head threads, you may want to get a machine shop to intall an insert (HeliCoil).

Good luck!

1979 240D
1990 300E
Reply With Quote
Old 09-09-2000, 12:50 PM
Karl Rich
Posts: n/a
Thanks guys for all the input on my query about the head bolts. Through a local tool supply house I found out that the head bolts are not a torx, they are similar but not the same. The right tool for the job is an 12mm Serrated Wrench for 12- point metric socket-hesd screws. I quest that only an MB mechanic would know that. How does the old saying go? The right tool for the job. Regardes Karl
Reply With Quote


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
OM603 - oil leak from exhaust port with new head! gsxr Diesel Discussion 27 04-06-2003 03:12 PM
head bolts 190e, 2.3L Jerry Terrell Tech Help 2 02-28-2003 04:32 PM
How to get head bolts off PKash Tech Help 5 06-11-2002 09:20 PM
a couple of questions on head removal MarkM Diesel Discussion 14 02-13-2002 11:43 AM
Head gasket replacement MarkM Diesel Discussion 16 11-02-2001 12:07 PM

All times are GMT -4. The time now is 09:12 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, 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