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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Zimmerman Rotor Installation



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      03-09-2012, 09:13 PM   #1
hankcah
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Zimmerman Rotor Installation

Replacing my front rotors tmrw morning on my e90 335i. (NOT my brake pads)

Want to run over the steps to make sure I understand:

1. Take screwdriver to remove the anti rattle flap from caliper.
2. Remove 2 18" Bolts on the rear side that hold the caliper.
3. Remove 6mm hex from front Rotors.
4. Remove plastic clip from rear side of the caliper.
5. Sand off the rust from the hub.
6. Apply some antisieze lube to the hub and replace with new rotors, and backwards for install with torque wrench. To what strength?

7. I understand I need a caliper press to put back on rotors?


Do I need to touch any cables?
Do I have to bleed my brakes?
Do I need to do anything with the sensors or any those silver bullet thingy
Do I need to chissle away that grime from the caliper in order from my rotors to fit?
Do I need to clamp my lines if Im not taking my pads off??

I've been searching up a storm but everyone else is doing their pads as well, so not sure what is mandatory.

Also, any good links for bedding in the brakes? I think I'm comfortable with that and know that I should do 120 after first installing.

Thanks for the tips.
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      03-10-2012, 01:54 PM   #2
techwhiz
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You may need to compress piston.
Everything else is correct.
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      03-11-2012, 03:28 PM   #3
hankcah
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Compress piston.... You mean when I put the caliper back on the new rotor?


So I removed the 2 18 bolts and the two bullet screws on the back of the caliper. The caliper is loose but not coming off.

Any advice?!

Thanks.
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      03-11-2012, 10:16 PM   #4
hankcah
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Anyway... I completed the installation. I think the hardst part was getting the damn Anti-Vibration Clip on top of the caliper back on.


Definitely investing in some air tools for my garage!
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