•
Inspection of pre-lift
a. If the nozzle tester handle is released
with the needle valve engaged in a full
lift condition, the tester pressure drops,
being accompanied by decrease in the
needle valve lift value(indicated value
on the dial gauge). (Figures 4-43 and
4-44)
b. Take the indicated value on the dial
gauge at the point of time when the
secondary spring completes its opera-
tion and the needle valve puts an end
to descent(the position of needle valve
lift value "
l" as shown in the figures 4-
44 and 4-45) and check that the value
is within the specified limit.
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