<<<snip>>>
These parts in boxes are not particularly small, especially the
diaphragm assembly, so even though it's less weight than a complete fuel
pump, it's not much smaller.
<<<snip>>>
There's a fix for that. The original early types of diaphragms were
assembled by the stem screwing into the steel slug on the fuel side.
Disassemble the old one. Upon receipt of the new one, grind off the
riveted stem. You can now CAREFULLY assemble the new diaphragm onto the
old stem and slug when needed. I did just that when rejuvenating a twin
cam fuel pump as no one listed the proper diaphragm assembly for it.
IMO, the biggest cause of fuel pump failure is the points which carbon
up or pit. Early MG literature as part of routine maitainence required
the cleaning of the points with "glass paper." This was discontinued
when the pumps started coming with condensers to cut down on the
pitting. Remember the fuel pump's points and coil carry similar
currents as the distributor for early MGBs and older MGs. So, they
should be serviced whenever the distributor is.
Blake
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