ENGINE
b. Injection Nozzle
CAUTION :
• Never contact with spraying diesel fuel under
pressure, which can have sufficient force to
penetrate the skin, causing serious personal injury.
• Be sure nobody is in direction of the spray.
( A ) Fuel Injection Pressure
1. Set the injection nozzle to the nozzle tester.
2. Measure the injection pressure.
3. If the measurement is not within the factory
specifications, adjust with the adjustment washer
(1) inside the nozzle holder.
( R e f e r e n c e )
Pressure variation with 0.1mm(0.004in) difference of
adjusting washer thickness is approx. 10kgf/cm
2
.
(B) Fuel Tightness of Needle Valve Seat Ti g h t n e s s
1. Set the injection nozzle to the nozzle tester.
2. Apply a pressure 130 kgf/c m
2
( 1 2 . 7 5 M p a ,
1849psi). After keeping the nozzle under this
pressure for 10 seconds. Check to see if fuel leaks
from the nozzle.
3. If the fuel should leak, replace the nozzle.
Fuel 23.44Mpa
Factory
injection 150kgf/cm
2
spec.
pressure 3400psi
91Mpa
Pressure Allowable
10kgf/cm
2
drop limit
142psi
Fuel 22.41 to 23.44Mpa
Factory
injection 228.5 to 239.0kgf/cm
2
spec.
pressure 3250 to 3400psi
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