S-97
03-M Series, WSM
DIESEL ENGINE
(2) Injection Nozzle
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.
Nozzle Spraying Condition
1. Set the injection nozzle to a nozzle tester, and check the nozzle
spraying condition.
2. If the spraying condition is defective, replace the nozzle piece.
W12598880
Fuel Injection Pressure
1. Set the injection nozzle to a nozzle tester.
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 adjusting washer (1) in the nozzle holder to adjust it.
(Reference)
• Pressure variation with 0.01 mm (0.0004 in.) difference of
adjusting washer thickness.
Approx. 235 kPa (2.4 kgf/cm
2
, 34 psi)
W12599730
Valve Seat Tightness
1. Set the injection nozzle to a nozzle tester.
2. Raise the fuel pressure, and keep at 12.75 MPa (130 kgf/cm
2
,
1849 psi) for 10 seconds.
3. If any fuel leak is found, replace the nozzle piece.
W12601340
(a) Good (b) Bad
Fuel injection pressure
Factory spec.
13.73 to 14.71 MPa
140 to 150 kgf/cm
2
1991 to 2134 psi
(1) Adjusting Washer
Valve seat tightness
Factory spec.
No fuel leak at
12.75 MPa
130 kgf/cm
2
1849 psi
KiSC issued 08, 2012 A
