can't remove rotor
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Joined: May 2011
Posts: 147
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05 C230K Sport
can't remove rotor
I removed the t30 holding the rotor in place. I have been hitting it with a mallet, it won't budge. did I miss a second means of attachment? or am I just hitting like a *****? my car is on stands right now so any other ideas would be appreciated.
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MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,105
Likes: 11
From: Toronto, Canada
2019 C300 Wagon; '75 Triumph TR6; previous: 2004 C230 6spd sold after 17 years of driving
a deadblow hammer helps, also spray some PB blaster around the center of the hub as that is usually where it binds. Sometimes it is rust that bonds the rotor to the hub
When replacing rotors I usually paint a thin layer of some anti seize on the inside of the rotor that contacts the hub so that there is no any bonding in the future especially in the salt rich roads in Ontario which only accelerates galvanic corrosion.
I believe that there is an extra screw hole in the rotor this allows you to insert a bolt and it is dead ended against the hub, start tightening that and the rotor will pop off the hub
When replacing rotors I usually paint a thin layer of some anti seize on the inside of the rotor that contacts the hub so that there is no any bonding in the future especially in the salt rich roads in Ontario which only accelerates galvanic corrosion.
I believe that there is an extra screw hole in the rotor this allows you to insert a bolt and it is dead ended against the hub, start tightening that and the rotor will pop off the hub
Thread Starter
Member
Joined: May 2011
Posts: 147
Likes: 0
05 C230K Sport
a deadblow hammer helps, also spray some PB blaster around the center of the hub as that is usually where it binds. Sometimes it is rust that bonds the rotor to the hub
When replacing rotors I usually paint a thin layer of some anti seize on the inside of the rotor that contacts the hub so that there is no any bonding in the future especially in the salt rich roads in Ontario which only accelerates galvanic corrosion.
I believe that there is an extra screw hole in the rotor this allows you to insert a bolt and it is dead ended against the hub, start tightening that and the rotor will pop off the hub
When replacing rotors I usually paint a thin layer of some anti seize on the inside of the rotor that contacts the hub so that there is no any bonding in the future especially in the salt rich roads in Ontario which only accelerates galvanic corrosion.
I believe that there is an extra screw hole in the rotor this allows you to insert a bolt and it is dead ended against the hub, start tightening that and the rotor will pop off the hub
MBWorld Fanatic!
Joined: Sep 2010
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From: Raleigh, NC
2005 C230K, 2019 Honda CR-V, '74 Lotus Europa
So far I've only changed the front rotors on my '05 C230. First I assume you took off your brake calipers. After the screw, there is nothing else holding it on other than friction. I had to bang the hell out of it while turning it for it to come off. It really makes that stupid little screw superfluous. Get a bigger hammer. A dead blow hammer. Hit it lots of times really hard. It will come off... eventually. Just keep saying to yourself that you didn't want that rotor anymore anyway! 
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,105
Likes: 11
From: Toronto, Canada
2019 C300 Wagon; '75 Triumph TR6; previous: 2004 C230 6spd sold after 17 years of driving
bolt trick works every time for every car I've had (german and Japanese) Make sure the bolt is metric and at least grade 5 (class 8.8) or higher, grade 8 is best (class 10.9)
Last edited by Boom vang; Mar 4, 2012 at 01:16 AM.
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Joined: Dec 2005
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From: SoCal. Desert
'16 E350, gone: '03 c230k
Do you live near the ocean in Jersey? Just curious - I assume there's a bunch of rust you're dealing with?
Neither my old or new rotors have the bolt hole, but I've seen them and used them on many other cars. I've actually had the threads strip on that hole with rotors that were stuck on there really good - like it sounds with the OP.
Neither my old or new rotors have the bolt hole, but I've seen them and used them on many other cars. I've actually had the threads strip on that hole with rotors that were stuck on there really good - like it sounds with the OP.
Thread Starter
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Joined: May 2011
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05 C230K Sport
I'm about 30 miles from the shoreline. but I work at a major bridge between jersey and pa. they throw more salt down in the winter than the entire state of nj. all winter long our parking lot is white. all four rotors are off now, waiting on caliper paint to dry so I can put the last wheel back together.
