Slave cylinder, maybe more?

[Gilles]

Originally Posted by maytag

In what manner are they failing? you used the word "pop"?

One time on a recently installed gearbox the slave wen't "pop" and the pedal went to the floor getting the brand new clutch disc completely wet on hydraulic fluid...

It seems that I failed to fully seat the 'plunger' from the slave into the cavity of the fork and as soon as I pushed the pedal it went down..a real mess and everything had to come apart again.

But if you managed to drive a few miles before the failure occur then most likely you got NOS (new old stock) slave that had dried rubber seals that failed under pressure.. that would be my guess

[TotalNewb]

Thank you. Hopefully, that is true. I feel like we are causing a local stock out condition on Boxster slave cylinders in our area. Its almost like the weatherman said its going to snow and everyone went out and got their bread, milk, and eggs, and slave cylinders.

[NewArt]

If you're blowing the end out of the slaves, I would guess that the piston is over extending. This can be caused by a problem with the clutch release fork being bent or misaligned. Take a peek with endoscope or an inspection mirror to verify that the dimple in the fork is aligned with the centre of the mounting hole. If not, then you'll have to pull the transmission and check the fork retaining clip (pivot) and other parts. I discuss this in my video on my YouTube channel: https://www.youtube.com/watch?v=mfqpCgDGJhk&t=3s

[maytag]

Originally Posted by NewArt

If you're blowing the end out of the slaves, I would guess that the piston is over extending. This can be caused by a problem with the clutch release fork being bent or misaligned. Take a peek with endoscope or an inspection mirror to verify that the dimple in the fork is aligned with the centre of the mounting hole. If not, then you'll have to pull the transmission and check the fork retaining clip (pivot) and other parts. I discuss this in my video on my YouTube channel: https://www.youtube.com/watch?v=mfqpCgDGJhk&t=3s

Yup, this is exactly what I was getting at too.... you explained it much better. ;-)



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[TotalNewb]

Thank you for the explanation. At least I have a few more things to look at now as opposed to potentially replacing the slave and hoping it doesn't break, again.