1-S22
MX5100, WSM
ENGINE
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 0.025 mm (0.00098 in.) difference of
adjusting washer thickness.
Approx. 590 kPa (6.0 kgf/cm
2
, 85 psi)
W10476390
Valve Seat Tightness
1. Set the injection nozzle to a nozzle tester.
2. Raise the fuel pressure, and keep at 12.75 MPa (130.0 kgf/cm
2
,
1849 psi) for 10 seconds.
3. If any fuel leak is found, replace the nozzle piece.
W10183690
Fuel injection pressure Factory spec.
13.73 to 14.70 MPa
140.0 to 150.0 kgf/cm
2
1992 to 2133 psi
(1) Adjusting Washer
Valve seat tightness Factory spec.
No fuel leak at
12.75 MPa
130.0 kgf/cm
2
1849 psi
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