RUNNING AD J1JSTMENTS~--Engine
if rhe float chamber is not already full, under which condition a slight
pumping resistance
is felt before the lever reaches its stop. This resistance
ceases when the
chaz-,5er is full.
Fig.
16.
Fuel
pump.
The glass bowl acts as a sediment chamber for the petrol passing to the
pump. The foreign matter collects on the underside of the gauze and,
being washed off by petrol, sinks to the bottom of the bowl. To remove
the sediment, detach the bowl by unscrewing the nut at its base and wash
out the bowl with the fuel that will be in it. When refitting the
bowl?
tighten the nut just snficient to ensure a fuel-tight joint, as over-tightening
may result in damage.
If the pump fails to supply fuel to the carburettors it is advisable to attend
to the following points
:
(a) inspect the fuel pipe unions, which (if any are
loose) should be tightened up, (b) a blockage may have been caused in
the fuel pipe, which may be removed by blowing through the pipe with
the aid of a tyre pump.
If, after attending to the above points, the pump still fails to operate, it
should be renewed and the old pump sent to the nearest
A.C.
or Doretti
Service Station.
Before doing any work on the carburettors or fuel pump which involves
disconnecting a fuel pipe it is important to turn off the fuel supply at the
tap on the petrol tank. Failure to do this will allow the petrol to drain
away from the tank.
To Next Page
Loading...