E-Brake is it hydraulic or mechanical |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
E-Brake is it hydraulic or mechanical |
echocanyons |
Sep 14 2005, 01:06 PM
Post
#1
|
Advanced Member Group: Benefactors Posts: 2,094 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California |
I wonder if the e-brake is purely mechanical or if it would be influenced by air in the lines and other similar hydraulic issues
I ask this because after replacing by brake pads and a carved up rotor I have no e-brake function on one wheel and very little resistance on the handle. I need t osee if it is because of the air or if it needs a thorogh inspection for problems. I also have a mushy pedal and need to bleed the brakes again tonight. Thanks |
tat2dphreak |
Sep 14 2005, 01:08 PM
Post
#2
|
stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
purely mechanical IIRC
|
ArtechnikA |
Sep 14 2005, 01:11 PM
Post
#3
|
||
rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
you have *all* the symptoms of excesive venting clearance... the handbrake is 100% mechanical, but it doesn't move the inner pad *much*. if the venting clearance is excessive, you'll run out of available motion before you achieve adequate pressure. 0.004" -- no more.. |
||
echocanyons |
Sep 14 2005, 01:25 PM
Post
#4
|
Advanced Member Group: Benefactors Posts: 2,094 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California |
I thought the clearance was 2mm (0.078inch)?
|
ArtechnikA |
Sep 14 2005, 01:32 PM
Post
#5
|
rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
NO.
it is not 2(!)mm and it is not 0,2mm. it is wrong in the Spec Book, which is why it's wrong in the Haynes. somebody 30 years ago typed "2" instead of "1" and it never goes away... search for "venting and clearance" and you'll see the countless threads, every 2 months or so, in which this is discussed... |
michelko |
Sep 14 2005, 01:34 PM
Post
#6
|
||
Senior Member Group: Members Posts: 867 Joined: 30-November 03 From: Germany, Lambsheim Member No.: 1,404 Region Association: None |
let´s make it a 0,2mm and you are right. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) ( This say´s the factory manual) (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_flagge6.gif) |
||
tat2dphreak |
Sep 14 2005, 01:45 PM
Post
#7
|
stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
one more thing to check is the cables, if the cable is adjusted too loose, it won't actuate properly... just to offer up another(though MUCH less likely scenario)
|
echocanyons |
Sep 14 2005, 01:49 PM
Post
#8
|
Advanced Member Group: Benefactors Posts: 2,094 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California |
oops I meant 0.02mm
That is good to know and here I thought I screwed something up. After 10yrs of 914 ownership I admit this is my first time changing the rear brakes (with the exception of the monoblock upgrade on my other car). |
lapuwali |
Sep 14 2005, 01:56 PM
Post
#9
|
||
Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
It's not 0.02mm, that's way too small, and you'll probably have the brakes lock up from heat expansion. 0.004 inches is 0.1mm. The range in the later editions of Haynes says 0.004 to 0.008 inches, or 0.1 to 0.2mm. I set mine to 0.005" cause that's the thinnest feeler gauge I have, and they work fine. |
||
echocanyons |
Sep 14 2005, 02:19 PM
Post
#10
|
Advanced Member Group: Benefactors Posts: 2,094 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California |
0.004-0.005 is what I will use depending on how low my feeler guages go
Thanks everybody |
Lo-Fi Version | Time is now: 2nd May 2024 - 02:04 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |