S-32
03-M-DI Series, WSM
DIESEL ENGINE
(10) Check Points of Every 1500 Hours
CAUTION
• Check the injection pressure and condition after confirming that there is nobody standing in the direction
the fume goes.
If the fume from the nozzle directly contacts the human body, cells may be destroyed and blood poisoning
may be caused.
Fuel Injection Pressure
1. Set the injection nozzle to a nozzle tester (Code No. 07909-
31361).
2. Slowly move the tester handle to measure the pressure at which
fuel begins jetting out from the nozzle.
3. If the measurement is not within the factory specifications,
replace the injection nozzle assembly.
W10408820
Nozzle Spraying Condition
1. Set the injection nozzle to a nozzle tester (Code No. 07909-
31361), and check the nozzle spraying condition.
2. If the spraying condition is defective, replace the injection nozzle
assembly.
W10411400
Valve Seat Tightness
1. Set the injection nozzle to a nozzle tester (Code No. 07909-
31361).
2. Raise the fuel pressure, and keep at 16.67 MPa (170 kgf/cm
2
,
2418 psi) for 10 seconds.
3. If any fuel leak is found, replace the injection nozzle assembly.
W10412730
Fuel injection pressure
1st. stage
Factory spec.
18.6 to 20.1 MPa
190 to 205 kgf/cm
2
2702 to 2916 psi
(a) Good (b) Bad
Valve seat tightness
Factory spec.
No fuel leak at
16.67 MPa
170 kgf/cm
2
2418 psi
KiSC issued 10, 2009 A
