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Re[2]: Throw-out bearing (theory/operation)

To: "Barry Schwartz" <bschwart@pacbell.net>
Subject: Re[2]: Throw-out bearing (theory/operation)
From: "Ross Vincenti" <RVincenti@lbfc.com>
Date: Thu, 19 Mar 1998 8:11 -0800
Cc: "triumphs@autox.team.net" <triumphs@Autox.Team.Net>
Barry replied:

>Gentlemen - If you think about the relationship of the throwout 
>bearing to the diaphram spring, it is conceivable that the bearing 
>could make noise when the clutch is not depressed.  Remember, that 
>when the clutch is "at rest" (not depressed), the throw out bearing is 
>not necessarily not in contact with the diaphram - it may be lightly 
>touching it -
*********************************
     [snip] But the key is PROPERLY adjusted.  That dead area in the clutch 
     pedal or travel BEFORE you feel the resistance of the throw-out 
     bearing contacting the pressure plate (typically 1/2 to 3/4 of an 
     inch, sometimes more depending on the vehicle, at the pedal) is there 
     for a reason.   [more snipping]  That dead space or "free travel" is 
     to provide a clearance for the throw-out bearing so that it DOES NOT 
     contact the pressure plate, and continue to rotate while the clutch 
     itself is engaged (pedal at rest).
     
Barry Schwartz (San Diego) bschwart@pacbell.net
*********************
Hi Barry - Yes, I agree with you that a "properly" operating TO bearing should 
not contact the pressure plate.  That's why I suggested the theory in the first 
place.  If the lister's clutch is NOT set up properly, the TO bearing could be 
improperly contacting the PP all the time.  And, no, I didn't take your comments
as a flame - just more info. on an interesting topic.  :^)  Cheers and best 
regards,
     
     Ross D. Vincenti
     64 Spitfire 4
     64 Porsche 356C Coupe

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