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Old 06-14-2003, 12:29 PM
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Join Date: Apr 2002
Location: Dallas Area
Posts: 382
rear brake disk on 300 E

What is the best way to get out the rear brake disk on a 300E. I have removed the caliper and the retiaining screw but am not able to get the disk out.

Any help is greatly appreciated.

Thank you.
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Old 06-14-2003, 12:29 PM
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Join Date: Apr 2002
Location: Dallas Area
Posts: 382
BTW, I am talking about an 86 300E.

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Old 06-14-2003, 02:49 PM
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Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
The parking brake must be fully released, and you may have to ratchet it back on the adjuster a few clicks to get the shoes below the groove in the little drum. The adjuster is accessable through one of the lug bolt holes, about 1:30 I think. Turn the rotor until you can see the star wheel, then stick a screwdriver or brake tool in there and turn it a bit. I don't remember which way, alas, but one way will tighten and the other loosen -- the direction will the be opposite on the other side.

The rotor can also stick to the hub -- a few taps with a steel hammer will usually break it loose.

You may have the original rotors on there, in which case I'd expect them to be rusted down pretty good.

1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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Old 06-15-2003, 11:26 AM
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Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
I had to smack mine with a rubber mallet several times before they broke loose.
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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Old 06-16-2003, 02:48 AM
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Join Date: May 2003
Posts: 24
On many cars you can remove the wheel and the disc retaining bolt, apply the parking brake to hold the disc, start the car, put it in gear and use the engine power to break the hub loose from the disc.

Needless to say, the car should be very securely supported on level ground with the front wheels chocked. Don't do this if you're using flimsy jack stands since the vibration could cause them to fail. In other words, use common sense and be careful...

Make sure to remove any rust or debris from the hub face before installing a new disc. If the hub face is uneven it can lead to brake pedal and/or wheel vibration.

I put a thin coating of anti-seize on the hubs before installing new discs so as to avoid this problem in the future. Be careful not to use too much or the excess could contaminate the parking brake shoes.

Good Luck,

'93 190 2.6 Sportline
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