Kubota GL6000A-AU-B Workshop Manual page 82

GL6000A-AU-B, GL6000D-AU-B,GL9000A-AU-B, GL9000D-AU-B, WSM
CAUTION
• Check the nozzle injection pressure and condition after you make sure 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.
(a) Good
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 specification,
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. 240 kPa (2.4 kgf/cm
Fuel injection pressure Factory specification
(1) Adjusting Washer
Nozzle Valve Seat Tightness
1. Set the injection nozzle to a nozzle tester.
2. Raise the fuel pressure, and keep at 12.7 MPa (130 kgf/cm
1850 psi) for 10 seconds.
3. If any fuel leak is found, replace the nozzle piece.
Valve seat tightness Factory specification
1-S20
9Y1211607ENS0021US0
(b) Bad
9Y1211607ENS0022US0
2
, 34 psi)
13.8 to 14.7 MPa
140 to 150 kgf/cm
2000 to 2130 psi
9Y1211607ENS0023US0
No fuel leak at
12.7 MPa
2
130 kgf/cm
1850 psi
9Y1211607ENS0024US0
KiSC issued 06, 2016 A
ENGINE
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