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  #1  
Old 04-30-2008, 11:35 AM
'83 300D "Mein Moneypit"
 
Join Date: Dec 2007
Posts: 37
300d rear rotors

Rotor question. We can't get the rear rotor released from the car. It is rusted, but not sure if it is held on to the car by anything. The calipers came off with no problem. The rotor needs turned but we can't get it off. Help!
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  #2  
Old 04-30-2008, 11:48 AM
rrgrassi's Avatar
mmmmmm Diesel...
 
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Try some PB blast on the hub and hit it with a heavy rubber mallet or a dead blow hammer.

Also, make sure the e-brake is released, as the e-brake is a separate system.
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  #3  
Old 04-30-2008, 12:18 PM
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Gotta another one...
 
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BFH = Big F'in Hammer
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  #4  
Old 04-30-2008, 12:29 PM
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SE pa BenzFest 8/19/2017
 
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Make sure you back the emergency brake pads off enough. When I pulled my old rotors, the e-brake pads had worn a deep groove into the drum of the old rotor. I had to loosen the shoes a lot before I could pull the rotor off.
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1985 300CD - "Gladys" - 255,XXX miles - FOR SALE
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  #5  
Old 04-30-2008, 01:04 PM
ForcedInduction
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Quote:
Originally Posted by stephen22 View Post
The rotor needs turned..
The rotors cannot be turned, they can only be replaced. They are 10mm thick and have a wear limit of 8.3mm. They are likely already close to that 8.3mm mark. Cutting them will put it right at the wear limit and then setting in the brakes will quickly wear them below the limit.

There is a hex bolt that holds them on the hub.

Last edited by ForcedInduction; 04-30-2008 at 01:20 PM.
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  #6  
Old 04-30-2008, 01:13 PM
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Quote:
Originally Posted by ForcedInduction View Post
The rotors cannot be turned, they can only be replaced. They are 10mm thick and have a wear limit of 8.3mm.

There is a hex bolt that holds them on the hub.
On mine, they are only held on by the lugs and the wheel. The only other holes in the rotor are for the alignment post on the hub and the e-brake starwheel hole.

I also replaced mine as they are pretty cheap too.
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10th Annual Southeast PA Benzfest start at post #1472

Chad
1985 300CD - "Gladys" - 255,XXX miles - FOR SALE
2005 Dodge Magnum 3.5 SXT AWD
1998 Acura 3.0 CL
OBK#44
"Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.)

SOLD
1985 300TD - Red Dragon
1986 300SDL - Coda
1991 - 300TE
1995 - E320
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  #7  
Old 04-30-2008, 04:24 PM
'83 300D "Mein Moneypit"
 
Join Date: Dec 2007
Posts: 37
I've read their is a hex bolt and not a hex bolt. I don't see a hex bolt on mine. We are planning on placing the rotors too as they are rusted like heck anyway.
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  #8  
Old 04-30-2008, 06:10 PM
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Quote:
Originally Posted by stephen22 View Post
I've read their is a hex bolt and not a hex bolt.
Not.
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  #9  
Old 04-30-2008, 06:13 PM
ForcedInduction
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Never mind, the hex bolts the manual was talking about are for the caliper.
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