G-20
V3307-DI-T-E2B, WSM
G
GENERAL
[8] CHECK POINTS OF EVERY 1500 HOURS
CAUTION
• Check the nozzle injection pressure and condition after confirming that there is nobody standing in the
direction the spray goes.
• If the spray from the nozzle directly contacts the human body, cells may be destroyed and blood poisoning
may be caused.
Checking Nozzle Spraying Condition
1. Attach the injection nozzle to the nozzle tester, and check the
nozzle spraying condition.
2. If the spraying condition is defective, replace the injection nozzle
assembly or repair at Kubota-authorized nozzle service shop.
W10371670
Checking Nozzle Injection Pressure
1. Attach the injection nozzle to the 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 injection nozzle assembly or repair at Kubota-
authorized nozzle service shop.
NOTE
Q
• Injection nozzle gasket must be replaced when the injection
nozzle is removed for checking.
W1037280
Checking Valve Seat Tightness
1. Attach the injection nozzle to the nozzle tester.
2. Raise the fuel pressure, and keep at 16.67 MPa (170.0 kgf/cm
2
,
2418 psi) for 10 seconds.
3. If any fuel leak is found, replace the injection nozzle assembly or
repair at Kubota-authorized nozzle service shop.
W10374150
(a) Good (b) Bad
Injection pressure
(1st stage)
Factory spec.
18.64 to 19.61 MPa
190.0 to 200.0 kgf/cm
2
2703 to 2844 psi
Valve seat tightness
Factory spec.
No fuel leak at
16.67 MPa
170.0 kgf/cm
2
2418 psi
KiSC issued 01, 2009 A