[W126 Coupe] Transmission Shift Question

[Dick Spellman]

Hi Richard;

I placed 15 inches on the modulator using a MightyVac for 20 minutes.  
Needle did not move.  So the diaphragm is good.  Knowing it is 20 years 
old anything could happen but, I think the 15 applied with the hand pump 
is within normal limits where the engine probably pulls a bit more at 
high vacuum.

Thanks,

Dick

Richard Hogarth wrote:

>If you are going to manually put a vacuum
>on that modulator, go really easy with it if you 
>are going to use a hand pump. Those diaphrams can
>easily be over stressed and be broken or torn.  
>
>-RPH
>
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