Advertisement
(2)
Injection Test
The
chattering
test
(intermittent
small
amount
injection
test)
is
considered as passed
if
intermi t-
tent clear cut injection with sound
is obtained when the tester lever
is slowly oper ated.
In this case
the injection must be straight in
the
same
direction
as
the
nozzle
axis.
Spray
in different
direc-
tions or
in sever al lines
is not
acceptable.
Also a large coarse spray
(3)
After-drip Test
In the preceding chattering
test,
if the fuel collects on the tip of
the
nozzle
and
dripping
occurs
after injection, the nozzle must be
replaced because
it
is defective.
A very
small
amount
of
fuel
may
collect on the nozzle tip.
This is
caused by chattering and, therefore
is not a defect.
(4)
Spray Condition Test
Good
8ad
is not acceptable.
u
u
L,J
~
Good
8ad
Bad
When the
tester
lever
is operated fast
(abour 200 strokes per
minute),
the fuel must be sprayed in fine mist straight in the
direction of the nozzle axis.
Coarse spray is not acceptable.
Installation of the Nozzle Holder Assembly
Install the nozzle holder assembly to the cylinder head and tighten to
the specified torque.
Replace the nozzle holder gasket wi th a new
one.
76
Advertisement
