Clutch Pedal Return

[JEC]

I have an intermittent problem with my clutch pedal hanging up about half way out.
Is it possible that the Boost spring ,number 9 on page 30-6 f the Bentley service manual, is bad?
My Boxster is a 2004 S,

[Wayne 962]

Yes, it can be the spring that pulls the pedal back, or it may be due to air in the hydraulic system. The pressure plate exerts pressure back on the pedal through the slave, lines, and master cylinder. Plus the pedal return is assisted by the spring. I would try replacing it if you're having difficulty. Should be part number 986-423-081-12.

-Wayne

[JEC]

Hi Wayne,
I just acquired my Boxster. It had 32K miles when I bought it and now has a little over 34K. The prior owner had the brake system flushed just before he put it up for sale. He had the dealer do 30K service and they flush at that time. With a common reservoir would this be a reason for air in the clutch hydraulic system?

Not to be negative in any way since I am at your mercy =:-) but I did a parts search on booster spring on your parts site before posting my question and it came up Huh.
You might have your web nurd look at improvements. I am a retired IBM nurd.

I also have a mild clutch chatter when I am not coordinated in shifting. Is this a sign of need of a new clutch, fly wheel?
Thanks for your Help
John Cox
Tucson Arizona

[WhipE350]

Originally Posted by JEC

Hi Wayne,
I just acquired my Boxster. It had 32K miles when I bought it and now has a little over 34K. The prior owner had the brake system flushed just before he put it up for sale. He had the dealer do 30K service and they flush at that time. With a common reservoir would this be a reason for air in the clutch hydraulic system?

Hi John, they flushed your brakes but did they flush the clutch? No one likes that job, trust me I've done mine, so it is possible it isn't part of a brake system flush.
I would also think no matter who the owner is they would guarantee that work...though I could be in some dream world.

For help in searching I just download the PET pdf and find the part numbers for all searches then enter it in part sites...from one IBM'er to an ex one

Good luck!

[Wayne 962]

Originally Posted by JEC

Not to be negative in any way since I am at your mercy =:-) but I did a parts search on booster spring on your parts site before posting my question and it came up Huh.
You might have your web nurd look at improvements. I am a retired IBM nurd.

No worries, we are revamping our entire search engine at this very moment!

-Wayne

[Wayne 962]

Originally Posted by WhipE350

Hi John, they flushed your brakes but did they flush the clutch? No one likes that job, trust me I've done mine, so it is possible it isn't part of a brake system flush.
I would also think no matter who the owner is they would guarantee that work...though I could be in some dream world.

True, it's common to have issues like these if the brakes aren't bled properly. Here's why - the hydraulic clutch and hydraulic brake systems both use the same reservoir, but not the same inlet pipe. The inlet pipe for the clutch is located above the one for the brakes. The theory behind this is that if the reservoir runs out of fluid, your clutch will stop working long before your brakes stop working. It's good design practice.

But, there's also the opportunity to introduce air into the system if you accidentally let the fluid level run down too low when you're bleeding the brakes. I would suggest that you try rebleeding your system before you replace the spring. I've got an article on that right here: Pelican Technical Article: Boxster Clutch Hydraulics Overhaul (Boxster Master Cylinder & Boxster Slave Cylinder Replacement) - 986 / 987

-Wayne