Kubota MX5100 - Page 104

1-S12
MX5100, WSM
ENGINE
FUEL SYSTEM
W1041294
Item Factory Specification Allowable Limit
Injection Pump Injection Timing 0.132 to 0.157 rad
(7.55 to 9.05 °) before
T.D.C.
–
Pump Element Fuel Tightness – 13.73 MPa
140.0 kgf/cm
2
1991 psi
Delivery Valve Fuel Tightness 10 seconds
13.73 → 12.75 MPa
140.0 → 130.0 kgf/cm
2
1991 → 1849 psi
5 seconds
13.73 → 12.75 MPa
140.0 →
130.0 kgf/cm
2
1991 → 1849 psi
Injection Nozzle Injection Pressure 13.73 to 14.70 MPa
140.0 to 150.0 kgf/cm
2
1992 to 2133 psi
–
Injection Nozzle Valve Seat Valve Seat
Tightness
When the pressure is
12.75 MPa
(130.0 kgf/cm
2
, 1849
psi), the valve seat must
be fuel tightness.
–