Triumph TR2 - Page 40

RUNNING AD JUSTMENTS-Engine
if the 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 chamber is
full.
Fig. 18. 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 sufficient to ensure a fuel-tight joint, as over-tightening
may result in damage.
If the pump fails to supply fuel to the carburett~rs 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 Triumph
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 chassis end of the flexible pipe. Failure to do this will allow the
petrol to drain away from the tank.