<VV> Modulator valve vacuum specs

[Stephen Upham]

> This 'kick like a mule' can be a broken damper spring on the low  
> band apply piston.
>
> harry yarnell
> Poohbah of Perryman
> perryman garage and orphanage
hyarnell1 at earthlink.net


Sorry, but now a flood of questions.  7-42 of the service manual  
shows that there are two springs on the low servo piston: the piston  
cushion spring and the piston return spring.  I suppose both should  
probably be replaced if I am getting that deep (removing the valve  
body) into the transmission.  It also says that the low band  
adjusting screw (7-35 - Valve body and low servo - 7 CAUTION) should  
be tightened fully before removal of the piston.  Unfortunately, the  
exploded diagram on 7-42 makes it look like the screw (#25) is  
located on the top of the transmission and is not clear to the actual  
location.  Is that the case?  If so, then it would seem that this  
procedure is best done with the transmission removed.  I would prefer  
not having to remove the drive train for this operation if possible.   
Also, what else should be replaced while I'm there just because I'm  
there?

Stephen Upham
Dallas, Texas
Vice-President / North Texas Corvair Association
CORSA
Corvaireum //

Mid prod. #18732 -1965 Monza Hardtop 110, Sierra Tan, Saddle
On May 11, 2008, at 9:39 AM, Harry Yarnell wrote:
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