Kubota WSM 07-E3B Series Workshop Manual page 133

07-E3B SERIES, 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
Factory
pressure
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-30
(b) Bad
18.64 to 20.10 MPa
V2607-DI-E3B
190.0 to 205.0 kgf/cm
V2607-DI-T-E3B
2703 to 2915 psi
18.64 to 19.61 MPa
V3007-DI-T-E3B
190.0 to 200.0 kgf/cm
V3307-DI-T-E3B
2703 to 2844 psi
No fuel leak at
16.67 MPa
170.0 kgf/cm
2418 psi
ENGINE
W10371670
2
2
W1037280
2
,
2
W10374150
KiSC issued 06, 2020 A