Stripped rotor bolt

Skylinemotorsports · 10-14-2018, 11:34 PM

Trying to change my rotor, the rusted 6mm allen screw got stripped. Was wondering if anyone had some good suggestions on how to remove it?

mojobmw_e90 · 10-14-2018, 11:56 PM

Try using a hammer impact screw driver. If that doesn't work drill it out

Emilime75 · 10-15-2018, 12:04 AM

^yup.

arkie6 · 10-15-2018, 12:18 AM

Take a cold chisel and make a straight on divot at 12 o'clock on the top side face of the screw head. Now tilt the head of the chisel to the right and slightly upward so that the chisel is about 45 degrees off perpendicular (this assumes you swing a hammer with your right hand). Now put the cutting edge of the chisel in the divot and strike the head of the chisel. This action should cause the screw to want to rotate counterclockwise. You may have to repeat several times and may even move your divot point say to 9 o'clock and then strike downward with the chisel. The impact from the hammer blow also tends to break up any corrosion on the screw threads facilitating removal of the screw.

07Coupe335 · 10-15-2018, 02:38 PM

I've drilled the head off, removed the rotor, and unscrewed the stub with a vise grip.

techwhiz · 10-15-2018, 02:46 PM

Quote:

Originally Posted by 07Coupe335

I've drilled the head off, removed the rotor, and unscrewed the stub with a vise grip.

This solution has worked for me.
If they are stuck, I use a torch to heat them up and use PB Blaster.

Skylinemotorsports · 10-17-2018, 11:16 PM

Well i took a small bit and kinda drilled through the thing hoping to pop it lose, might be in abit of a bind now. I have a bigger bit and see if that will pop off the head, hoping this will work.......

fravel · 10-18-2018, 08:07 AM

I always just drill them out.

Skylinemotorsports · 10-18-2018, 11:20 AM

Quote:

Originally Posted by fravel

I always just drill them out.

When you drill them out how to remove the left over thread, or will they pop out like afew videos I have seen?

fravel · 10-18-2018, 11:43 AM

Quote:

Originally Posted by Skylinemotorsports

Quote:

Originally Posted by fravel

I always just drill them out.

When you drill them out how to remove the left over thread, or will they pop out like afew videos I have seen?

Usually I don't bother. All that screw really does is help keep the rotor in place until you put the caliper back on. Your wheel bolts are what really keep the rotor fixed to the hub.

Otherwise I'd prolly just use PB Blaster + vice grips.

Skylinemotorsports · 10-18-2018, 12:43 PM

Quote:

Originally Posted by fravel

Usually I don't bother. All that screw really does is help keep the rotor in place until you put the caliper back on. Your wheel bolts are what really keep the rotor fixed to the hub.

Otherwise I'd prolly just use PB Blaster + vice grips.

Well the problem is I have to get the head off so I can remove everything, and I am having issues drilling it out....

07Coupe335 · 10-18-2018, 07:06 PM

Just use a drill bit slightly smaller than the head and use moderate pressure.
The screw heads come off easily.

Skylinemotorsports · 10-19-2018, 11:41 AM

Drilled out the head, took a chisel and hammer to it when it started to loosen up. Hammered it out, it broke off at some point, and plyers to remove what was left.. Took awhile but worked out pretty easy in the end!

mweisdorfer · 10-20-2018, 02:39 PM

Quote:

Originally Posted by Skylinemotorsports

Drilled out the head, took a chisel and hammer to it when it started to loosen up. Hammered it out, it broke off at some point, and plyers to remove what was left.. Took awhile but worked out pretty easy in the end!

If you have s spline bolt removal kit, you can save yourself a lot of effort. That and s cobalt bit set and a little of drill oil.

10-14-2018, 11:34 PM	#1
Skylinemotorsports Private 8 Rep 76 Posts Drives: 09 e92 335 Join Date: Apr 2017 Location: Atlanta iTrader: (0)	Stripped rotor bolt Trying to change my rotor, the rusted 6mm allen screw got stripped. Was wondering if anyone had some good suggestions on how to remove it?
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10-14-2018, 11:56 PM	#2
mojobmw_e90 Major 382 Rep 1,497 Posts Drives: 2014 E63S Join Date: Oct 2014 Location: Chicago IL iTrader: (3)	Try using a hammer impact screw driver. If that doesn't work drill it out
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10-15-2018, 12:04 AM	#3
Emilime75 Colonel 1225 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	^yup.
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10-15-2018, 12:18 AM	#4
arkie6 Lieutenant 395 Rep 433 Posts Drives: 2008 BMW 335i sedan Join Date: Aug 2014 Location: Russellville, AR iTrader: (0) Garage List 2008 BMW 335i [0.00]	Take a cold chisel and make a straight on divot at 12 o'clock on the top side face of the screw head. Now tilt the head of the chisel to the right and slightly upward so that the chisel is about 45 degrees off perpendicular (this assumes you swing a hammer with your right hand). Now put the cutting edge of the chisel in the divot and strike the head of the chisel. This action should cause the screw to want to rotate counterclockwise. You may have to repeat several times and may even move your divot point say to 9 o'clock and then strike downward with the chisel. The impact from the hammer blow also tends to break up any corrosion on the screw threads facilitating removal of the screw.
	Appreciate 0 Quote

10-15-2018, 02:38 PM	#5
07Coupe335 New Member 2 Rep 20 Posts Drives: 2007 335i Coupe Join Date: Feb 2016 Location: Pennsylvania iTrader: (0)	I've drilled the head off, removed the rotor, and unscrewed the stub with a vise grip.
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10-17-2018, 11:16 PM	#7
Skylinemotorsports Private 8 Rep 76 Posts Drives: 09 e92 335 Join Date: Apr 2017 Location: Atlanta iTrader: (0)	Well i took a small bit and kinda drilled through the thing hoping to pop it lose, might be in abit of a bind now. I have a bigger bit and see if that will pop off the head, hoping this will work.......
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10-18-2018, 08:07 AM	#8
fravel Colonel 1648 Rep 2,494 Posts Drives: Monaco Blue '06 330i Join Date: Aug 2012 Location: The Nasti 'Nati iTrader: (1)	I always just drill them out. __________________
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10-18-2018, 07:06 PM	#12
07Coupe335 New Member 2 Rep 20 Posts Drives: 2007 335i Coupe Join Date: Feb 2016 Location: Pennsylvania iTrader: (0)	Just use a drill bit slightly smaller than the head and use moderate pressure. The screw heads come off easily.
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10-19-2018, 11:41 AM	#13
Skylinemotorsports Private 8 Rep 76 Posts Drives: 09 e92 335 Join Date: Apr 2017 Location: Atlanta iTrader: (0)	Drilled out the head, took a chisel and hammer to it when it started to loosen up. Hammered it out, it broke off at some point, and plyers to remove what was left.. Took awhile but worked out pretty easy in the end!
	Appreciate 0 Quote