ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   ZPOST > BMW Z4 Roadster and Coupe > Z4 DIY (Do It Yourself) Articles
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      12-13-2012, 12:11 PM   #1
donoman
Rookie
31
Rep
379
Posts

Drives: 03 Z4 2.5i 5MT
Join Date: Dec 2012
Location: Santa Clara, CA

iTrader: (1)

Parking brake adjustment DIY?

Hi there, this is my first post.

I've been looking for instructions on parking brake adjustment for my 2.5i but haven't been able to find them. Well, I found a technical service bulletin but it was not very clear. Does anyone have pictures on the process?

I can get a little parking brake pressure when I pull the lever ALL THE WAY up. But it's not enough for parking on the hills of San Francisco... =)

Thanks!
__________________
2003 Z4 2.5i
2013 FR-S
1990 911 C2
1983 Wife
Appreciate 0
      12-14-2012, 03:34 PM   #2
donoman
Rookie
31
Rep
379
Posts

Drives: 03 Z4 2.5i 5MT
Join Date: Dec 2012
Location: Santa Clara, CA

iTrader: (1)

Help please!!!
__________________
2003 Z4 2.5i
2013 FR-S
1990 911 C2
1983 Wife
Appreciate 0
      12-14-2012, 04:13 PM   #3
GuidoK
#buildnotbought
GuidoK's Avatar
10473
Rep
4,815
Posts

Drives: Z4 3.0i ESS TS2+
Join Date: Jul 2012
Location: Tinkering in the garage

iTrader: (0)

http://audio.home.xs4all.nl/zooi/z4/.../Adjusting.tif
says it all.. (3 page tiff, view with something like irfanview)
Somehow I cannot find this page on the web version of TIS. This is an export I made from the DVD version

This is the auto adjuster that you need to push back in that little retaining clip:

I used here a tyre iron, but a really long screwdriver is even easier (perhaps you need both).
At the tip you can see the retaining clip, which sometimes has to be pushed to the side to grip.

If not clear: here is the auto adjuster situated:

(at the base of the brake lever)


This is the little wheel adjuster (inside the drum/disk) that you have to turn with the disc mounted (with a screwdriver through the hole of a wheel bolt):


In short:
1.push back the auto adjuster in the retaining clip
2. turn the expander wheel in the drum brake until you cannot move the wheel.
3. turn back the expander wheel 9 notches.
4. Release the auto adjuster from the retaining clip.


Sometimes I turn it back less than 9 notches, but the wheel definately shouldn't drag on the pads.

Last edited by GuidoK; 12-14-2012 at 04:18 PM..
Appreciate 0
      12-14-2012, 05:24 PM   #4
donoman
Rookie
31
Rep
379
Posts

Drives: 03 Z4 2.5i 5MT
Join Date: Dec 2012
Location: Santa Clara, CA

iTrader: (1)

Oh man, you ROCK!!!

Initially, I could not figure out the tensioning system at the lever so I went to the parking brakes in the back and already did the screw adjustment. I don't really know why I have *some* tension on the line at full extension. I would think that if my retaining clip wasn't hooked, I'd have NO tension. But I will try this anyway. Thank you very much for the tips.

donoman
__________________
2003 Z4 2.5i
2013 FR-S
1990 911 C2
1983 Wife
Appreciate 0
      12-16-2012, 03:48 AM   #5
donoman
Rookie
31
Rep
379
Posts

Drives: 03 Z4 2.5i 5MT
Join Date: Dec 2012
Location: Santa Clara, CA

iTrader: (1)

I was able to complete the parking brake adjustment with your help! thanks!

Notes to future users:

1) Parking brake MUST BE DOWN to compress the spring.
2) After compressing the spring, hook the retaining clip.
3) Go to the the back of the car and adjust the parking brake drums
4) Return to the retaining clip and release. It should be tight now.

The whole mechanism didn't make sense to me, but after following the directions to the "T" it worked out. Thanks!

donoman
__________________
2003 Z4 2.5i
2013 FR-S
1990 911 C2
1983 Wife
Appreciate 0
      12-17-2012, 11:44 AM   #6
Pete C
New Member
Pete C's Avatar
0
Rep
9
Posts

Drives: '08 Z4 SI
Join Date: Nov 2012
Location: Colorado

iTrader: (0)

Quote:
Originally Posted by GuidoK View Post
http://audio.home.xs4all.nl/zooi/z4/.../Adjusting.tif
says it all.. (3 page tiff, view with something like irfanview)
Somehow I cannot find this page on the web version of TIS. This is an export I made from the DVD version <snip>
Thanks for the info GuidoK. When I saved your above link to the .tiff file it gave me 3 pages including bedding in procedure for new parking brake shoes.
Appreciate 0
      02-09-2013, 12:04 PM   #7
bluecobra
Private
2
Rep
82
Posts

Drives: 2006 Z4M Coupe
Join Date: Nov 2011
Location: Alabama

iTrader: (0)

Maybe this is why my adjustment at the wheels did not help...........off to the garage
Appreciate 0
      02-16-2013, 02:32 PM   #8
McKoval
New Member
Poland
1
Rep
27
Posts

Drives: z4 3.0si 2006
Join Date: Oct 2012
Location: Poland

iTrader: (0)

Many thanks for this DIY.. it;ll be the firs thing to do in the winter!
__________________
2006 3.0si
Appreciate 0
      02-16-2013, 10:16 PM   #9
antennahead
Captain
antennahead's Avatar
United_States
73
Rep
820
Posts

Drives: 2007 Z4MR silver grey
Join Date: Feb 2011
Location: Charleston, South Carolina

iTrader: (0)

Garage List
I have the opposite problem. I pulled up too hard one time on the handbrake, and after that when released the pads were dragging the drum, making that aweful noise as the wheel rotated. After driving a short distance it stopped, but I can't engage the handbrake now, or it will drag again.......... it's like when released the cable isn't quite released enough to stop the dragging. Can this be adjusted from just the handbrake itself, or do I need to get to the adjustment at the drum? Also, does the leather armrest surrounding the lever at the center console just pop off by pulling up on it, or is it screwed down. Thanks.

John
Appreciate 0
      02-19-2013, 04:00 PM   #10
bluecobra
Private
2
Rep
82
Posts

Drives: 2006 Z4M Coupe
Join Date: Nov 2011
Location: Alabama

iTrader: (0)

Quote:
Originally Posted by antennahead View Post
I have the opposite problem. I pulled up too hard one time on the handbrake, and after that when released the pads were dragging the drum, making that aweful noise as the wheel rotated. After driving a short distance it stopped, but I can't engage the handbrake now, or it will drag again.......... it's like when released the cable isn't quite released enough to stop the dragging. Can this be adjusted from just the handbrake itself, or do I need to get to the adjustment at the drum? Also, does the leather armrest surrounding the lever at the center console just pop off by pulling up on it, or is it screwed down. Thanks.

John
Not sure about the brakes dragging, but the leather armrest just pulls up and off. Lift up on the rear of it and pull up and forward. It helps if you have the e-brake handle up a little as the boot it attached to it. That is the easy part. Good luck.
Appreciate 0
      02-21-2013, 12:35 AM   #11
antennahead
Captain
antennahead's Avatar
United_States
73
Rep
820
Posts

Drives: 2007 Z4MR silver grey
Join Date: Feb 2011
Location: Charleston, South Carolina

iTrader: (0)

Garage List
Quote:
Originally Posted by bluecobra View Post
Not sure about the brakes dragging, but the leather armrest just pulls up and off. Lift up on the rear of it and pull up and forward. It helps if you have the e-brake handle up a little as the boot it attached to it. That is the easy part. Good luck.
Thanks!
Appreciate 0
      01-12-2022, 08:28 PM   #12
Black911S
Private First Class
55
Rep
145
Posts

Drives: 2007 BMW Z4M Coupe - Imola Red
Join Date: Oct 2015
Location: San Diego

iTrader: (0)

Does the parking brake really need to be in the down position prior to compressing the spring? In the down position there is literally no access to it.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off



All times are GMT -5. The time now is 03:13 AM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST