E90Post
 


ECS BMW
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > CDV clutch delay valve improved instructions



Reply
 
Thread Tools Search this Thread
      01-28-2008, 09:48 PM   #1
Brian GT PRO
Brian GT PRO's Avatar
United_States
5
Rep
129
Posts

Drives: Jet Black 335i E92
Join Date: Dec 2007
Location: Fullerton, CA

iTrader: (0)

Send a message via AIM to Brian GT PRO
CDV clutch delay valve removal *improved instructions*

CDV updated instructions for those doing this mod

--------------------------------------------------------------------------------

Hi guys, wanted to share with you some information about doing the CDV mod. For those who don't know, or have just found out about this mod, there are a few things that NEED to be outlined for you guys so you don't lose your hair doing this simple and effective mod.

The CDV (clutch delay valve) is really a B.S. item and should be one of the first things you yank out of your car (or replace it with one of the hallow ones available out there). It provides a delay to the clutch action that makes you feel like you don't know how to drive a stick properly, once you yank that thing out, you will feel right at home with your car, trust me.

There are pictures on other threads so I won't bore you with that, but I will provide the information that you will need for a succesful mod.

1. Lift the car from the front to gain access to the undercarriage
2. Place jackstand under the car and make sure the car is LEVEL.
3. Remove the access plastic cover
4. Get some visegrips and gently pinch the clutch line (the SOFT rubber part)
5. Get a small flathead and pull the clip out holding the CDV in place
6. Remove CDV and install hose directly to the slave cylinder.
7. Once secure and cliped back in, release the visegrip and check for leaks.
8. Open the brake resevour and add some fluid be VERY careful, brake fluid eats paint.
9. Time to bleed the system.
10. I suggest to make your life a bit easier to get a clear jar can be plastic but so you can see inside of it, put a little brake fluid into the bottom of the jar, poke a hole in the lid and place a small piece of rubber tubing that is large enough to slide over the clutch slave valve, all the way down to the bottom of the jar and emerse it in the brake fluid, the reason is that with a little fluid in there you will be able to see bubbles when air is being released from the system, once you can quick turn open/close the valve and you don't see air bubbles you will be air bubble free and done.

You need the help of a friend here for the bleeding process.

One person gets in the car, other is underneath the car with a 11mm wrench that will be used to loosen up the bleeder valve on the clutch slave cylinder ( be VERY CAREFUL as it is made of plastic). One of you pump the clutch 4 times (if there is excessive air in the system you may have to return the clutch pedal by hand) on the 4th pump hold the clutch pedal on the floor while the other person releases the 11mm bleeder valve and shuts it, try to do this in a quick turning action. Now repeat the same process over and over untill you feel the clutch come back to life. You will need to do this a few times always making sure to add fluid to the reservour. You will feel the pedal start to get firm and nice. Once the person under the car no longer sees bubbles you're done!!

BIG BTW:, the clutch and the brake share the same reservor, BUT they have different chambers so even if the brake fluid looks high or normal, it does not nessesarily mean that you have fluid in the clutch side, make sure to add fluid!! and use good stuff!!

I hope this will help you do a successful CDV delete.

Last edited by Brian GT PRO; 02-14-2008 at 10:12 PM.
Appreciate 0
      01-29-2008, 11:07 AM   #2
BMW_TT
Colonel
91
Rep
2,549
Posts

Drives: E92 335i
Join Date: Aug 2007
Location: Dallas, TX

iTrader: (4)

Send a message via AIM to BMW_TT Send a message via MSN to BMW_TT Send a message via Yahoo to BMW_TT
Great tutorial, but pictures would be nice.
Appreciate 0
      01-29-2008, 10:15 PM   #3
veightkiller
Brigadier General
veightkiller's Avatar
Canada
47
Rep
4,152
Posts

Drives: e90 335i
Join Date: Dec 2007
Location: Vancouver,B.C

iTrader: (3)

i'll post here when i installed mine....can't wait.
Appreciate 0
      01-30-2008, 12:17 PM   #4
wrh3
Car Guy
wrh3's Avatar
20
Rep
796
Posts

Drives: 2005 MCS, 2013 Corvette 427
Join Date: Aug 2007
Location: ATL, GA

iTrader: (10)

I have a DIY with pics here:

http://www.billswebspace.com/BMWCDVMod.htm
__________________

Bill- 2005 Mini Cooper S, 2013 Corvette 427
www.billswebspace.com/bmwindex BMW CCA Member # 389948
Appreciate 0
      01-30-2008, 04:57 PM   #5
Brian GT PRO
Brian GT PRO's Avatar
United_States
5
Rep
129
Posts

Drives: Jet Black 335i E92
Join Date: Dec 2007
Location: Fullerton, CA

iTrader: (0)

Send a message via AIM to Brian GT PRO
Thank you for the picture link, for those doing this mod, please print out my instructions above, and grab the pics, this will make your life soo much easier.
Appreciate 0
      11-14-2010, 08:19 PM   #6
WilkesE90
Enlisted Member
United_States
5
Rep
36
Posts

Drives: 2007 BMW E90 335i 6-Speed
Join Date: Sep 2010
Location: Ohio

iTrader: (0)

I'm having the hardest time getting the clip out of the connector on the hardline side. Any suggestions? It is in such a strange position, pretty annoying!
__________________
2007 BMW E90 335i, Manual | 2004 BMW E46 330Ci, Manual (Retired) | 2002 BMW E39 530i, Automatic (Retired)
---
BMW Car Club of America Member 431251. Join your local chapter!
Appreciate 0
      12-07-2010, 10:44 PM   #7
Volasko
Lieutenant Colonel
Volasko's Avatar
Canada
128
Rep
1,717
Posts

Drives: 2006 E90 330i BSM 6MT ZSP
Join Date: Dec 2010
Location: Toronto

iTrader: (2)

Garage List
Great advice, going to do this as soon as I get my car.
Appreciate 0
      12-14-2010, 07:35 PM   #8
torohandyman
Private
3
Rep
80
Posts

Drives: 2006 BMW 325I 6-SPEED
Join Date: Oct 2009
Location: KISSIMMEE, FL

iTrader: (1)

will this work on a 2006 bmw 325i E90 6speed Manual?
Appreciate 0
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
Forum Jump


All times are GMT -4. The time now is 11:12 PM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
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