Fuel System - Kubota G21LD / G21HD Workshop Manual

G21LD · G21HD, WSM

[4] FUEL SYSTEM

Injection Pump
Injection Timing
Fuel Tightness of Pump Element
Fuel Tightness of Delivery Valve
Injection Nozzle
Fuel Injection Pressure
Fuel Tightness of Nozzle Valve Seat
Item
1-S10
Factory Specifications
0.28 to 0.31 rad (16° to
18°) Before T.D.C.
–
10 seconds
13.73 → 12.75 MPa
140 →130 kgf/cm 2
1991 → 1849 psi
13.73 to 14.71 MPa
2
140 to 150 kgf/cm
1991 to 2134 psi
When the pressure is
12.75 MPa
2
(130 kgf/cm , 1849 psi),
the valve seat must be
fueltight
ENGINE
Allowable Limit
–
13.73 MPa
2
140 kgf/cm
1991 psi
5 seconds
13.73 → 12.75
MPa
2
140 →130 kgf/cm
1991 → 1849 psi
W1013874
–
–
W1013973
KiSC issued 08, 2007 A