> How many of you have rebuilt your mechanical AC pumps to have them fail
> again within a year or so?
I've had one fail in just a few months, but the failure was that the NORS
diaphragm I used would not stand up to CA's reformulated gasoline. Bought a
new rebuild kit from TRF, and it's held up for several years now.
> In my case, it's not the rubber diaphragm that is failing, but rather the
> metal assembly that holds together the rubber diaphram (actually a stack
> os three thin rubber sheets). ... This pressing is
> lostening, allowing fuel to go from the 'wet' fuel pump side of the
> diaphram to pass to the 'dry' mechanical side of the diaphram.
That pretty clearly sounds like a defective component to me, unless perhaps
the metal disc is hitting on something and causing extra force on the pull
rod.
Randall
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