The
S.U.
Petrol
Pump.
This instrument is constructionally very simple
and it is very improbable that it will give any trouble at all.
Should it, how-
ever, cease to function, the trouble will probably be due to
1
'The pump plungers
(C
or
K)
sticking, due to dirt or grit getting
between the pump plungers nnd the hod,. Often
a
blow on the
pump with the fist is sufficient to get it working,
when
the dirt will
pass right through. Should it not do so, the rem'edy is to remove
the filter bowl
(U)
and foot valve
(Y),
also the top cap of the pump
and the cork float, when it will be possible to push thme plunger
(C)
PAGE
FIFTY-FOUR
D/I
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