Re: clutch replacement

[Charles Slayman <Charles.Slayman@domain.elided>]

Bruce,
	It has nothing to do with balance.  The pressure plate is independently 
balanced (at least on the 105/115 series, I'm not to sure about the transaxle 
Alfas).  
	The clutch disc and throwout bearing are probably so light and small 
that they are inherently balanced just from the manufacturing process.  I don't 
ever recall seeing balance weights or material removed  to balance the disc.  
And the throwout bearing has way to small an inertial mass to bother with.
	The reason to replace them as a unit is shear lazyness.  How would you 
like to pull the transmission 10K miles after replacing the clutch disc just to 
put in a new throwout bearing or pressure plate.  Seems kinda silly, hug?  So 
might as well do all three and get all the knuckle bashing over with in one fell 
swoop.  Or is that swell poop?
	Oh, and by the way, check the input shaft to the transmission.  I 
destroyed a brand new clutch after 25K miles due to a bad input shaft.
	
Cheers,
Charlie
'89 Spider with second set of new clutch/pressure plate/throwout bearing
	

> Date: Mon, 26 Nov 2001 09:10:56 -0500
> From: "Giller,Bruce C." <bgiller@domain.elided>
> X-Accept-Language: en,pdf
> To: alfa-digest <alfa-digest@domain.elided>
> Subject: clutch replacement
> Content-Transfer-Encoding: 7bit
> 
> 	Seems that ever since TB (Time Began), the word on the street was that
> when replacing a clutch, everything should be replaced; pressure plate,
> throw out bearing and driven disk.  The reasoning went to say that
> everything was a balanced unit.  When I got my engine balanced, the only
> clutch parts requested were the pressure plate and the clutch
> bolts...not the driven disk.  The balance shop said that since the
> driven disk worn down, the weight varied and thusly the balance.
> 
> 	My new thinking is that replacing just the throw out bearing and driven
> disk would be enough for a clutch job.  Any comments?
> 
> 	Bruce
> 
> 	'73 GTV engine ready to go back in...waiting for a dry weekend
> 	'86 Spider

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