Stripped rotor screw
Thread Starter
Super Member
Joined: Jan 2009
Posts: 566
Likes: 261
From: In The Woods
2019 W222 S560 4Matic/2025 Yukon Denali
Stripped rotor screw
Stopped my brake job in its tracks.
that stupid T27 that holds the rotor on.
should i drill it out? I tried to tap it but no luck.
any advice?
that stupid T27 that holds the rotor on.
should i drill it out? I tried to tap it but no luck.
any advice?
MBWorld Fanatic!
Joined: Feb 2012
Posts: 2,642
Likes: 1,224
From: Phoenix
222 S-65
I have managed to crack them loose with a small punch after using a small chisel to put a nick in the fastener so the punch has something to grip. Righty tighty. Lefty loosey.
Where that does not work, use the drill.
When you reassemble.... that fastener is only there to locate the rotor. It need not be tighter then the fastener stops + 1/4 turn.
Where that does not work, use the drill.
When you reassemble.... that fastener is only there to locate the rotor. It need not be tighter then the fastener stops + 1/4 turn.
Last edited by JohnLane; Jul 30, 2023 at 01:49 PM.
Senior Member
Joined: Jul 2007
Posts: 283
Likes: 102
From: Maryland
S 550, S65 Coupe
Just drill it out so the head comes off then you can grab the remaining threads when the rotor is off with some vise-grips and unscrew the rest of it. Use some antiseize on the new screw.
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Thread Starter
Super Member
Joined: Jan 2009
Posts: 566
Likes: 261
From: In The Woods
2019 W222 S560 4Matic/2025 Yukon Denali
Ok, i sorted it out.
i did not return the the service position menu for the rear wheels.
came back to the car in a few hours, went through the menu of service position and reset and now all works fine.
brakes and rotors were an easy job.
one thing ive learned, never use torque from a 90dg angle on a torx screw, the need direct torque, like from a handheld electric ratchet. All the other rotor screws came off easy.
i added some anti seize to make it easy next time.
i did not return the the service position menu for the rear wheels.
came back to the car in a few hours, went through the menu of service position and reset and now all works fine.
brakes and rotors were an easy job.
one thing ive learned, never use torque from a 90dg angle on a torx screw, the need direct torque, like from a handheld electric ratchet. All the other rotor screws came off easy.
i added some anti seize to make it easy next time.
