Just did CDV on 335i

HyperM3 · 04-11-2007, 06:48 PM

Ok, so it was and wasnt as easy as Id hoped.

First off, no need to jack the car if you have ramps. Very easy to just drive up and get under. I had enough room even being on a creeper.

7 8mm screws are easy to take off. What I didnt read however is that this plastic sheild is still held on by a metal retainer attached to the underbody. You have to swivel it about 45° and then it comes off.

After that is off you can clearly see where you have to work. Getting the retainer ring up on the old CDV wasnt that hard. However, the ring on the thing holding the CDV popped right off and landed by my head(something now you have to hold in your hand).

KEEP THE REPLACEMENT CDV READY!!!!

The minute I pulled off my old one the fluid started coming out. It was so pretty and smelled like french toast, I got hungry. However this shit is slippery and the new CDV kept slipping out of my latex gloves(highly recommended as this fluid can be skinterating). Finally got the new CDV in but the previously mentioned retainer ring for the other thing kept slipping off. I had to put on a fresh pair of gloves so I could get a good grip and snap it down.

Anyway, I was too lazy to try to bleed any possible air out(plus I didnt have anyone to help push on the clutch) so I put it all back together.

Took it for a quick drive and didnt notice much when shifting slowly. However, when youre romping on it the engagement is so CRISP that the first time I did it, I heard a loud THUNK in the rear and the DST light flashed at me like a crossing guard in a school zone. Tried it a couple more times and it just felt so smooth. Best I can describe it is the slow slip to losing traction when shifting fast no longer includes that word slow.

Anyway, Im happy and couldnt feel any difference in the clutch so I dont think I have to worry about bleeding it.

Happy motoring!

spesrf25 · 04-12-2007, 03:04 AM

From what I understand, doesn't the clutch and brakes share the same fluid reservoir? I wouldn't want the air to get in my brake lines. But on the other hand, the air in the clutch line might just float back up to the reservoir and not affect anything. It's hard to tell without a tech manual. Anyhow, thanks for the input.
Good Luck!!!

STE92VE · 04-12-2007, 08:17 AM

2 things you should keep in mind:

- If you clamp the line before you remove the CDV, you will minimize fluid loss.

- After any brake fluid loss, you should check the level in the reservoir and add only fresh brake fluid should it be required.

HyperM3 · 04-12-2007, 08:26 AM

Quote:

Originally Posted by STE92VE

2 things you should keep in mind:

- If you clamp the line before you remove the CDV, you will minimize fluid loss.

This would have made life easier if ANYONE would have wrote that in their DIY...

BoostedBMW · 04-12-2007, 09:48 AM

Thanks for the tips on the install.

I'll keep in mind to clamp the line when taking it out.

04-11-2007, 06:48 PM	#1
HyperM3 Too many Alex's, from now on, call me Beaufort 342 Rep 6,188 Posts Drives: See Sig Join Date: Feb 2007 Location: Lawrenceville, NJ iTrader: (8)	Just did CDV on 335i Ok, so it was and wasnt as easy as Id hoped. First off, no need to jack the car if you have ramps. Very easy to just drive up and get under. I had enough room even being on a creeper. 7 8mm screws are easy to take off. What I didnt read however is that this plastic sheild is still held on by a metal retainer attached to the underbody. You have to swivel it about 45° and then it comes off. After that is off you can clearly see where you have to work. Getting the retainer ring up on the old CDV wasnt that hard. However, the ring on the thing holding the CDV popped right off and landed by my head(something now you have to hold in your hand). KEEP THE REPLACEMENT CDV READY!!!! The minute I pulled off my old one the fluid started coming out. It was so pretty and smelled like french toast, I got hungry. However this shit is slippery and the new CDV kept slipping out of my latex gloves(highly recommended as this fluid can be skinterating). Finally got the new CDV in but the previously mentioned retainer ring for the other thing kept slipping off. I had to put on a fresh pair of gloves so I could get a good grip and snap it down. Anyway, I was too lazy to try to bleed any possible air out(plus I didnt have anyone to help push on the clutch) so I put it all back together. Took it for a quick drive and didnt notice much when shifting slowly. However, when youre romping on it the engagement is so CRISP that the first time I did it, I heard a loud THUNK in the rear and the DST light flashed at me like a crossing guard in a school zone. Tried it a couple more times and it just felt so smooth. Best I can describe it is the slow slip to losing traction when shifting fast no longer includes that word slow. Anyway, Im happy and couldnt feel any difference in the clutch so I dont think I have to worry about bleeding it. Happy motoring! __________________ 13 HD FatBob 17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip 16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone) 07 335i(gone)
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04-12-2007, 03:04 AM	#2
spesrf25 Second Lieutenant 36 Rep 244 Posts Drives: X5d X-Line Join Date: Dec 2006 Location: NJ iTrader: (0)	From what I understand, doesn't the clutch and brakes share the same fluid reservoir? I wouldn't want the air to get in my brake lines. But on the other hand, the air in the clutch line might just float back up to the reservoir and not affect anything. It's hard to tell without a tech manual. Anyhow, thanks for the input. Good Luck!!! __________________ BMW X5d (Ordered) 2007 335i Coupe (sold)
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04-12-2007, 08:17 AM	#3
STE92VE STEVIL Empire 219 Rep 6,297 Posts Drives: Fast Join Date: May 2006 Location: Long Island, NY iTrader: (0)	2 things you should keep in mind: - If you clamp the line before you remove the CDV, you will minimize fluid loss. - After any brake fluid loss, you should check the level in the reservoir and add only fresh brake fluid should it be required. __________________ 2007 E92 328i 6MT-Space Gray/Black Dakota/Gray Poplar w/heated seats-PCD 4/27/07 (SOLD) 2009 E90 328i xDrive 6AT-Space Gray/Oyster Dakota/Dark Burl Walnut w/ZPP,ZCW,Xenons-ED 4/17/09 - Redelivery 5/30/09 (SOLD) 2014 E84 xDrive28i 8AT-Alpine White/Black Nevada/Silver Matte w/ZMV,ZLP,494 - DD 3/14/14 (SOLD)
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04-12-2007, 09:48 AM	#5
BoostedBMW Moderator 133 Rep 6,775 Posts Drives: TiAg E92 335 Join Date: Oct 2006 Location: Raleigh, NC iTrader: (14) Garage List 2003 S2000 [0.00]	Thanks for the tips on the install. I'll keep in mind to clamp the line when taking it out. __________________ -Michael. Berlina Black S2000 CR is now in the garage l 19" Rial Daytona Race l KW V2 l Eisenhaus Race Exhaust l
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