wsm V3307-DI-T-E2B Workshop Manual page 91

V3307-DI-T-E2B, WSM
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.
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.
(a) Good
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
• Injection nozzle gasket must be replaced when the injection
nozzle is removed for checking.
Injection pressure
Factory spec.
(1st stage)
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
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.
Valve seat tightness Factory spec.
S-22
ENGINE
(b) Bad
W10371670
18.64 to 19.61 MPa
190.0 to 200.0 kgf/cm
2703 to 2844 psi
W1037280
No fuel leak at
16.67 MPa
2
170.0 kgf/cm
2418 psi
W10374150
KiSC issued 01, 2009 A
2
2
,