5) Testing
(1) Suction capacity test
Connect one end of a hose to the inlet
side of the feed pump and immerse the
other end of it into the fuel tank as illus-
trated.
Hold the feed pump in position about 1 m
above the level of fuel in the fuel tank.
Operate the tappet at the rate of 100 rpm
and check to see if fuel is drawn in and
delivered for 40 seconds or so.
(2) Delivery test
Make a test with the feed pump mounted
on a pump tester as illustrated.
Operate the pump at the rate of 1,000
rpm and check to see if the pump deliv-
ery is more than 405 cc/15 seconds.
(3) Sealing test
Plug up the delivery port on the feed
pump and apply compressed air of 2
kg/cm
2
into the inlet side.
Submerge the feed pump in a container
of diesel fuel and check for air leak.
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