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 02-05-2007, 11:53 PM
JamesDean's Avatar
Electrical Engineer
 
Join Date: Apr 2005
Location: NE Ohio
Posts: 5,034
Help! I stripped a bolt @#$@ Cold weather

Hello everyone,

So to make a long story short I was trying to remove the EHA on my m103 to "un-adjust" it because i had mistakenly diagnosed and fixed something I inadvertently stripped the torx head of the screw. I am such an idiot i mean the engine IS warm and it IS like 25 degrees in the garage....goshh

what should i do about it? I could just leave it but ever since adjust my fuel economy has been much worse than usual..

thanks,

kris

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

82 300SD 145k
82 300SD 265k
87 420SEL 230k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
Reply With Quote
  #2  
Old 02-06-2007, 01:17 AM
Registered User
 
Join Date: Sep 2004
Location: Seattle
Posts: 1,939
Well I am not familiar with that car, but it sounds like a likely application for a screw extractor. That is assuming you can not get vice grips on the head of course. As far as screw extractors, I was just at Sears and they had some nifty ones that were sort of like a driver bit, with a drill on one end and the extractor part on the other end. I think they were calling them deck out because they said they could do deck screws. It was a small package with a couple of different sizes. They had a TV showing a demo of it.

Now, I am surprised you stripped a Torx screw. They are specially made not to do that. Were you using an allen wrench (or worse) in it? I confused.

Good luck.

Mike
__________________
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 02-06-2007, 09:16 AM
seo seo is offline
Registered User
 
Join Date: Oct 2006
Location: Maine
Posts: 213
I'm not familiar with the part you're talking about.
However, if the stripped bolt is attaching two parts together, it may be possible to grind the head off the stripped bolt, and remove the fastened-on part. leaving the stud (bolt with head ground off) sticking out of the fastened-onto part. Now you can use a pipe wrench, vice grips, stud extractor, etc, to remove the stud.
Three methods are used to make bolts and studs come out when they're stuck:
1) weasel piss (WP). This the generic term for penetrating oil. I use it like everyone else, but do not believe it does the slightest bit of good until the stud starts to move. Then if you go back and forth you can get the WP to work its way down the stud and to the threads, and prevent the threads from jamming.
2) Vibration. If you put a wrench on the stud and put a moderate twisting on it, and at the same time ding the end of the stud with a light hammper. Search for the hammer and force that will "ring" the stud, making the hammer bounce back like a live thing. This is highly effective.
3) Heat. So effective that another name for an acetylene torch is the "smoke wrench." If you can heat the part up, this will almost always work because of the simple physics involved. The problems are a) lighting your car on fire with a torch. Which does solve the problem, but not necessarily as you were hoping for. and b) the danger of warping metal, melting plastic, burning off paint, etc. Using direct torch heat on a part requires some experience to have come out right, particularly oxy/acetylene (as opposed to propane/air, which is a much cooler flame) I've had pretty good luck with brass and alu parts by boiling them in a pot of water, or better yet a pressure cooker. I've also made various types of simple "furnaces" to heat complicated parts without exposing them to direct flame. The simplest was a length of stovepipe with caps at each end. The part was put inside, the outside was heated. In that particular case it was heated in the red-hot embers of a workshop barrel stove. The entire part came out glowing dull red, and several broken-off bolts came right out.

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 06:04 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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