Kubota M108S, Workshop Manual

Page: 128 / 523

1-S5
M108S, WSM ENGINE
2. SERVICING SPECIFICATIONS
ENGINE BODY
W10138740
Item Factory Specification Allowable Limit
Cylinder Head Surface Flatness – 0.05 mm
0.002 in.
Top Clearance 0.72 to 0.90 mm
0.029 to 0.035 in.
–
Compression V3800-CR-TI 3.09 to 3.29 MPa /
200 min
−
1
(rpm)
31.5 to 33.5 kgf/cm
2
/
200 min
−
1
(rpm)
449 to 477 psi /
200 min
−
1
(rpm)
2.41 MPa /
200 min
−
1
(rpm)
24.6 kgf/cm
2
/
200 min
−
1
(rpm)
350 psi /
200 min
−
1
(rpm)
Variance Among Cylinders – 10 % or less
Valve Seat Angle (Intake)
Angle (Exhaust)
Width (Intake)
Width (Exhaust)
1.0 rad
60 °
0.79 rad
45 °
1.6 to 2.0 mm
0.063 to 0.078 in.
2.3 to 2.6 mm
0.091 to 0.10 in.
–
–
–
–
Valve Face Angle (Intake)
Angle (Exhaust)
1.0 rad
60 °
0.79 rad
45 °
–
–
Valve Recessing Intake
Exhaust
0.60 to 0.80 mm
0.024 to 0.031 in.
0.850 to 1.05 mm
0.0335 to 0.0413 in.
1.2 mm
0.047 in.
1.2 mm
0.047 in.
KiSC issued 06, 2007 A