E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

E Brake shoe friction - acrid smell!

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Old 09-21-2010, 05:15 PM
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2005 E320 4matic wagon
Exclamation E Brake shoe friction - acrid smell!

Just did my rear brake pads and rotors, not the E brake. Had a tough time getting the rotors off. Had to tap hard with a hammer, while turning the rotor. Got them off finally, new ones went on fine.

The E brake assembly looked fine to me, nothing fell out or sprung loose. However, got a strong acrid odor for the first 5-6 miles of driving after replacing, then seemed to go away. No grinding sounds or dragging sensation, Coasts fine in neutral on level road.

Problem seems to have gone away, so don't worry about it ???

Hate to fix something just to create another problem!!
Old 09-21-2010, 09:43 PM
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Did you bed

the new pads in properly?
Did you torque the lugs to 80ft lb?
Both important items to do when diy brake pads and rotors
Old 09-22-2010, 03:21 AM
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96' E320
You're probably just smelling the new pads breaking in.

I wouldn't worry about it
Old 09-22-2010, 05:40 PM
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2005 E320 4matic wagon
brake friction

Thanks. Roger that on both. M
Old 09-29-2010, 11:55 AM
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1999 E300 TurboDiesel
I know it's a dumb question, but...

Did you have the e-brake on when trying to pull off the old rotors? I'm trying to figure out why they were difficult to remove.
Old 09-29-2010, 12:06 PM
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88 535is, 89 318iT
Originally Posted by anghrist
Did you have the e-brake on when trying to pull off the old rotors? I'm trying to figure out why they were difficult to remove.
A slight groove and rust can develop on the rotor that the ebrake pads catch on. Usually need to back off the shoes with the adjuster before rotor removal, then readjust after installing the new ones.

Sometimes that's not so easy if the adjusters are rusted badly.
Old 09-29-2010, 02:40 PM
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1999 E300 TurboDiesel
Originally Posted by dsmith
A slight groove and rust can develop on the rotor that the ebrake pads catch on. Usually need to back off the shoes with the adjuster before rotor removal, then readjust after installing the new ones.

Sometimes that's not so easy if the adjusters are rusted badly.
Shouldn't the tention be relieved and then reset on the cable slack adjuster as well both prior to rotor removal and after reinstallation respectively?
Old 09-29-2010, 06:57 PM
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88 535is, 89 318iT
Originally Posted by anghrist
Shouldn't the tention be relieved and then reset on the cable slack adjuster as well both prior to rotor removal and after reinstallation respectively?
Tension is released on removal to get the rotor off over the shoes. You don't need to retension until the new rotor is on.

Then follow the procedure to set the parking brake, which would be something like tighten the adjuster until you feel contact with the rotor (wheel is tight to spin), then back the adjuster off about 10 clicks until the shoes are just off of the rotor. You probably won't need to adjust at the pedal, if it was ok before. It's one of those things you get a feel for after doing a few.

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