(2) Reassembly
a. After removing carbon deposit,
submerge the nozzle in diesel oil
and clean it.
b. Replace all the gaskets with new
ones.
c. Assemble the parts and tighten
them to specified torque.
(3) Adjustment
a. Remove the cap nut and assemble
a nozzle to a nozzle tester.
b. With the adjusting screw loosened,
operate the nozzle 2~3 times to
bleed it.
c. Operate the nozzle tester lever at
the specified rate.
d. Adjust the injection pressure to
the standard pressure using the
adjusting screw.
e. After adjusting the injection pressure,
tighten the cap nut to specified
torque.
f. Re-check the injection pressure and
see if the spray pattern is normal.
(4) Testing
With the nozzle assembled to a nozzle
tester and pressure of 200~210 bar
applied, check the nozzle for fuel leak-
age.
- 108 -
EQM4026S
1
2
9
3
4
8
7
5
Replace
gaskets
Replace
gaskets
Replace
gaskets
Locating pin
4~5kg
•
m
<Figure 4-20>
<Figure 4-21>
<Figure 4-22>
EQM4027S
EQM4028S
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