Thread: Hissing when clutch is disengaged

Gentlemen,
Fistly, Happy Anzac Day to all, and may we never forget.

My 1953 Series 1 80" makes a hissing sound when the clutch is let out.
Am I correct is assuming that the Withdrawal Thrust Bearing is the culprit?
My 1932 Austin 7 has a similar issues many years back and replacing the Thrust Bearing resolved that hissing noise.

When I renewed the clutch, I feel that I would have replaced the Thrust bearing, simply due to may past experience with that part so was rather surprised to hear it when I resembled the engine back into the car.

Could it be anything else?

regards and thanks in advance.
Jeff in Perth, Western Australian.

Originally Posted by vnx205

I have had a clutch pedal make a surprisingly loud squeaking noise when lifting my foot off the pedal.
It might have sounded a bit like a hiss.
I can't remember which vehicle it was because it was quite along time ago. It was the spring responsible for returning the pedal that was squeaking.
It is quite quick and easy to eliminate the pedal itself as a possible source of the noise.

A loud squealing noise when lifting foot off the peddle is usually caused by a dry spigot bush. A hissing noise when clutch peddle is fully depressed can be that the pressure plate has not fully disengaged & still rubbing on the clutch plate, I would check the clutch adjustment.