Help with stripped bolt
Thread Starter
MBWorld Fanatic!
Joined: Aug 2005
Posts: 4,574
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From: Sugar Land, TX
BMW E39
Help with stripped bolt
I stripped this torx bolt on the front rotor.
A couple questions:
-Is it safe to drill it out?
-Is it a MB special bolt (gotta get it from the dealer)?
-Is it the only bolt holding on the rotor?
A couple questions:
-Is it safe to drill it out?
-Is it a MB special bolt (gotta get it from the dealer)?
-Is it the only bolt holding on the rotor?
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Joined: Aug 2006
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SL63 (R230), CL500 (C215), SL55 (R129), CE300-24 Cabrio (A124)
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Joined: Jan 2008
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From: california high desert
2003 S500, 03 C240, 03 E320, 03 tahoe
hold on!
Last edited by AH1W-COBRA; Sep 6, 2008 at 07:36 PM. Reason: typo
MBWorld Fanatic!
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04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
if you havent started drilling it out yet than simply take a center punch and walk it out by creating a dimple head on than bang it in the loosening direction.a couple of whacks and it will break loose,then use whats left of the allen head and remove it.it is sometimes best to use this method from the start when you have that much corrosion.a goog penetrant oil will surley help also.and yes that is the only bolt used to locate the rotor on the hub,the lug bolts are actually what give it the structural integrity.and it is a special bolt designed to recess in the rotor.if there is anything left of the old ones than i wouldent let the car sit because of the old hardware,simply reinstall the old bolts with just enough torque to secure them and replace them "asap".
Thread Starter
MBWorld Fanatic!
Joined: Aug 2005
Posts: 4,574
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From: Sugar Land, TX
BMW E39
I think I screwed myself. I drilled and drilled some more until I drilled through the entire screw. It still wouldn't come out. I made sure to use a drill bit smaller than the diameter of the screw though, so I wouldn't damage the hub threads.
I'm sitting here with a drilled through screw. Help me.
I'm sitting here with a drilled through screw. Help me.
Senior Member
Joined: Mar 2008
Posts: 314
Likes: 3
From: SC
SL500
Drill it out.....I had this same problem. I drive hard, and the heat from the rotors caused the bolt to be sucked in. Make sure you us a smaller bit than the screw and it will come out. FYI that lil bolt just keeps the rotor from moving when u put your lugs through. It by no means holds the rotor in place, the pressure from the lugs is what holds it in place. You can drive safely with out it. Its just a pain in the *** keeping your holes in line when you try to bolt your rim on.
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Joined: Jul 2008
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MB S320 CDI
I think I screwed myself. I drilled and drilled some more until I drilled through the entire screw. It still wouldn't come out. I made sure to use a drill bit smaller than the diameter of the screw though, so I wouldn't damage the hub threads.
I'm sitting here with a drilled through screw. Help me.
I'm sitting here with a drilled through screw. Help me.
You need to get something like this.....http://cgi.ebay.co.uk/Silverline-Too...d=p3286.c0.m14
Granted it's not a quality piece of tooling but it will certainly get you out of a corner.
Old trick for an older problem. You wind the extractor into the broken bolt (hole drilled through first as you have already done) in an anticlockwise fashion (reverse thread) all the way until it stops. The tool bites in to the fabric of the bolt and you just keep going until it starts to unwind for you.
Plenty of penetrating oil here, Buy a decent set because if you snap the tool then you really are gonna be sweating a bit.
Trust me. This works.
Where there's a will there is indeed a relative.
B320
Last edited by Benzene320; Sep 6, 2008 at 07:39 PM.
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Newbie
Joined: Jul 2008
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MB S320 CDI
Oh yeah.... and when u fit your nice shiny new bolt smear it with a heat resistant grease like :
http://cgi.ebay.co.uk/COPPER-Ease-Gr...d=p3286.c0.m14
so it frees up nicely next time.
A good smear on the contact points of caliper to brake pad works wonders for squeal and disassembly next time round.
Also good to stop alloy rims sticking onto steel discs (rotors i think you guys call 'em) and drums.
MB320
http://cgi.ebay.co.uk/COPPER-Ease-Gr...d=p3286.c0.m14
so it frees up nicely next time.
A good smear on the contact points of caliper to brake pad works wonders for squeal and disassembly next time round.
Also good to stop alloy rims sticking onto steel discs (rotors i think you guys call 'em) and drums.
MB320
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Joined: Jan 2008
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From: california high desert
2003 S500, 03 C240, 03 E320, 03 tahoe
no problem!
I think I screwed myself. I drilled and drilled some more until I drilled through the entire screw. It still wouldn't come out. I made sure to use a drill bit smaller than the diameter of the screw though, so I wouldn't damage the hub threads.
I'm sitting here with a drilled through screw. Help me.
I'm sitting here with a drilled through screw. Help me.
Last edited by AH1W-COBRA; Sep 6, 2008 at 07:48 PM. Reason: typo
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Joined: Nov 2007
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From: San Jose
W220
I think I screwed myself. I drilled and drilled some more until I drilled through the entire screw. It still wouldn't come out. I made sure to use a drill bit smaller than the diameter of the screw though, so I wouldn't damage the hub threads.
I'm sitting here with a drilled through screw. Help me.
I'm sitting here with a drilled through screw. Help me.
Thread Starter
MBWorld Fanatic!
Joined: Aug 2005
Posts: 4,574
Likes: 3
From: Sugar Land, TX
BMW E39
