Kubota D662-E2B, Workshop Manual

Page: 45 / 142

G-23
SM-E2B SERIES, WSM G GENERAL
[13] 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.
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.
W10411400
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 (0.0010 in.) difference of
adjusting washer thickness.
Approx. 588 kPa (6.0 kgf/cm
2
, 85 psi)
W10182100
Nozzle 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.
W10412730
(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 06, 2006 A