Replacing The Slave Cylinder on a Honda S2000
Soft clutch pedal? Clutch engaging at the floor? You might have a shot slave cylinder. This is a pretty easy job as long as you have the required washers which you may or may not be able to pull together on a Sunday afternoon (which is when I do all my car repairs).
This guide was built from my AP1 '03 S2000, so this may be slightly different if you have an AP2 model.
- New clutch slave cylinder - #46930-S2A-003
- 2 Clutch oil bolt washers - #46472-568-000 (also described as Banjo bolt washers)
- Grease (Honda recommends Honda High Temp Urea Grease - Perhaps I'm a sucker but I got what they recommended)
- optional: 1 Clutch oil bolt (also known as a Banjo bolt) (Honda Part #46963-SD4-020)
- optional: 1 Clutch hose (Honda Part #46961-S2A-505)
- After parts and shipping the total cost was about $120, but these were all OEM parts.
If your clutch pedal feels soft and/or engages close to the floor then you might have a busted slave cylinder.
Inspecting for leaks
First, find the slave cylinder: It's under the car bolted to the transmission. It's a black cylinder with a black rubber boot with a small piece of hose attached to it.
Look around the bolt attached to the hose and the cylinder for leaks. Here's mine - you can see brake fluid dripping. The hose is also stained from the leak. My fluid is blue but you might have plain old yellow fluid instead.
Jack up the front of the car (of course, use jack stands and make sure the car is stable before you start getting dirty)
Go ahead and get some shop towels ready and put down a drain pan.
Removing the Cylinder
Here's a breakdown of the part you'll be replacing
Remove the oil drain bolt (A) and detach the hose (C). Be prepared for some brake fluid to be released.
Remove the two bolts attaching the cylinder to the transmission (E).
With a little finesse pry away the rubber boot, then remove the bad cylinder.
Removing the Hose
The previous steps had you remove the oil drain bolt (A). The hose should now be connected by the clip shown on the left side of this picture.
Loosen the connection between the rubber hose and the hard line. You should then be able to pull the rubber hose connection free from the clip.
Prepping the cylinder
Apply the super high temp urea grease to the tip of the cylinder rod.
Slide the cylinder back into the rubber boot.
Attaching the new hose
Rejoin the rubber hose with the hard line into the clip. Tighten the connections.
Attaching the new cylinder
Wedge the rubber boot and new cylinder back into the vehicle. The tip of the cylinder rod should connect with the clutch fork rod.
Rebolt the cylinder to the car, making sure to use your new washers (and new drain bolt if you bought one).
Bleed the clutch hydraulic system and add new brake fluid as necessary.