E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > DIY: Do It Yourself

DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 01-15-2013, 06:00 PM   #1
Whig Bong
Registered User
 
Join Date: Jan 2013
Location: Asheville, NC
Posts: 4
My Ride: 2001 BMW 330ci
Brake fluid leaking from bottom of transmission bell housing (x-posted from S&B)

So the other night I was driving home and my clutch pedal went out. I've had my master cylinder and my slave cylinder go out on my E30 before and I knew what it felt like so I decided to tow the car home and replace the slave cylinder. Got the new slave cylinder installed in about an hour and tried to bleed it. Only problem was when we added brake fluid to the reservoir it wouldnt hold the fluid. I check for any holes in the reservoir and couldnt find any. Then we pushed on the break pedal to see if there was a leak in the master. A ton of brake fluid started dripping from the transmission access panel and I got underneath and all I could see was fluid leaking from the bell housing. I know the brake lines that go over to the DSC unit run over the top of that section but can brake pipe even leak like that?

Thanks in advance,
Whig Bong

TL;DR: when I press brake pedal fluid leaks from bottom of bell housing. Think it has to do with DSC
Whig Bong is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 01-17-2013, 09:10 AM   #2
teamdfl
Slow in, slower out
 
Join Date: Dec 1969
Location: Awesome, NJ
Posts: 4,540
My Ride: 325it
The slave is leaking fluid into the bellhousing. If the slave was not properly installed with its pushrod on the release fork, you pushed the slave cylinder piston out of its bore. Get another Slave cylinder.
__________________
Mod the driver first. Participate in your local BMWCCA driving school. Have you joined BMWCCA yet?

My Track Schedule

The solution to the lack of headroom in the X6

teamdfl is offline   Reply With Quote
Old 01-21-2013, 10:13 AM   #3
Whig Bong
Registered User
 
Join Date: Jan 2013
Location: Asheville, NC
Posts: 4
My Ride: 2001 BMW 330ci
Took the slave cylinder off and this was exactly the problem. Thanks for the help. Any tips for making sure this doesn't happen when I put another new one on?
Whig Bong is offline   Reply With Quote
Old 01-25-2013, 09:19 AM   #4
teamdfl
Slow in, slower out
 
Join Date: Dec 1969
Location: Awesome, NJ
Posts: 4,540
My Ride: 325it
It's been a while since I replaced one on an E46 so I don't remember any tricks or problems. In general, I bleed BMW slave cylinders by hand while under the car. With the slave hooked up to its hose but not installed in the trans, orient the slave so the hose fitting is up. Slowly push the pushrod in and let it extend a few dozen times. The air goes up and out the line and gravity pulls fluid down into the slave. Top off the brake fluid reservoir frequently to avoid pulling air into the line. When it feels and sounds like no more air is in the slave, bolt it in.
__________________
Mod the driver first. Participate in your local BMWCCA driving school. Have you joined BMWCCA yet?

My Track Schedule

The solution to the lack of headroom in the X6


Last edited by teamdfl; 01-25-2013 at 09:23 AM.
teamdfl is offline   Reply With Quote
Old 01-25-2013, 02:37 PM   #5
can0n4
Registered User
 
Join Date: Sep 2012
Location: Upstate NY
Posts: 316
My Ride: '04 330xi, '04 X3
Quote:
Originally Posted by Whig Bong View Post
Took the slave cylinder off and this was exactly the problem. Thanks for the help. Any tips for making sure this doesn't happen when I put another new one on?
just make sure it goes in straight. I did the same thing. Ten minutes later after I got the rod back in the slave cylinder I put it in straight and it was fine.
can0n4 is online now   Reply With Quote
Old 01-25-2013, 07:12 PM   #6
Whig Bong
Registered User
 
Join Date: Jan 2013
Location: Asheville, NC
Posts: 4
My Ride: 2001 BMW 330ci
Update: There turns out to be a lot more wrong with the system than I thought. Sent it to a local shop for further work
Whig Bong is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 10:23 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use