Replacing brake master cylinder and/or brake booster

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Dec 5, 2009 | 11:40 AM

Rudy

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From: Pittsburgh, PA USA

My Ride: G30 M550i

Model Year: 2018

For those of you daring enough to attempt to replace your master cylinder or brake booster, a new document is now available in the technical gallery that might help you out...

https://5series.net/forums/index.php?autoco...i&img=17568

Dec 6, 2009 | 06:19 AM

andi07xi

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From: Morganville, NJ

Quote:

Originally Posted by Rudy' post='1068349' date='Dec 5 2009, 03:40 PM

Hi, I am changing front brake pads on my 530xi with EBC semi metallic pads.
I plan to drain the brake fluid in the pistons to avoid it going back in the lines.
Want to know what kind of brake fluid I should use to top it off with (DOT4 etc). Manual does not mention it.
Also want to know if it's an overkill?

TIA,
prem

Dec 6, 2009 | 10:03 AM

05545i

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From: Warwick, RI

My Ride: 2005 545i Sport 6MT

Quote:

Originally Posted by andi07xi' post='1068629' date='Dec 6 2009, 10:19 AM

DOT 4 fluid. If you have never added brake fluid, or have no leak, you should not have to top off the reseviour.

Dec 6, 2009 | 01:25 PM

andi07xi

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From: Morganville, NJ

Quote:

Originally Posted by 05545i' post='1068744' date='Dec 6 2009, 02:03 PM

DOT 4 fluid. If you have never added brake fluid, or have no leak, you should not have to top off the reseviour.

Thanks 05545i, I did not need to add any, 'coz I decided against bleeding the fluid in the calipers.
Job done...
Moving on to coolant change next weekend.

Dec 7, 2009 | 01:13 AM

tooltec

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From: UK

My Ride: 2007 530d M Sport Automatic, Le Mans Edition.Le Mans Blue Individual Paint Special, Syrah Blue Individual Leather, Piano Black Individual Interior Trim, Front seat heating,M Double Spoke 172 19

Quote:

Originally Posted by Rudy' post='1068349' date='Dec 5 2009, 08:40 PM

I've looked at the brake fluid flushing and bleeding section and it seems as though it could be a bit more involved than the DIY procedures carried out by some members.
Does anyone know what "Run through bleeding routine with BMW Diagnosis & Information System" entails?