Kubota M105S, Workshop Manual

Page: 122 / 561

1-S5
M105S, WSM ENGINE
2. SERVICING SPECIFICATIONS
ENGINE BODY
W1013874
Item Factory Specification Allowable Limit
Cylinder Head Surface Flatness – 0.05 mm
0.0020 in.
Top Clearance 0.72 to 0.90 mm
0.0283 to 0.0354 in.
–
Compression Pressure 3.47 MPa /
250 min
−
1
(rpm)
35.4 kgf/cm
2
/
250 min
−
1
(rpm)
503 psi /
250 min
−
1
(rpm)
2.56 MPa /
250 min
−
1
(rpm)
26.1 kgf/cm
2
/
250 min
−
1
(rpm)
371 psi /
250 min
−
1
(rpm)
Variance Among Cylinders – 10 % or less
Valve Seat Width Intake 1.6 to 2.0 mm
0.0630 to 0.0790 in.
–
Exhaust 2.3 to 2.6 mm
0.0906 to 0.1024 in.
–
Valve Seat Angle Intake 1.047 rad
60 °
–
Exhaust 0.785 rad
45 °
–
Valve Face Angle Intake 1.047 rad
60 °
–
Exhaust 0.785 rad
45 °
–
Valve Recessing Intake 0.6 to 0.8 mm
0.0236 to 0.0315 in.
1.2 mm
0.0472 in.
Exhaust 0.85 to 1.05 mm
0.0335 to 0.0413 in.
1.2 mm
0.0472 in.
Valve Stem to Valve Guide Clearance
(Intake) 0.055 to 0.085 mm
0.0022 to 0.0033 in.
0.1 mm
0.0039 in.
Valve Stem O.D.
(Intake) 6.960 to 6.975 mm
0.2740 to 0.2746 in.
–
Valve Guide I.D.
(Intake) 7.030 to 7.045 mm
0.2768 to 0.2774 in.
–
Clearance
(Exhaust) 0.055 to 0.085 mm
0.0022 to 0.0033 in.
0.1 mm
0.0039 in.
Valve Stem O.D.
(Exhaust) 6.960 to 6.975 mm
0.2740 to 0.2746 in.
–
Valve Guide I.D.
(Exhaust) 7.030 to 7.045 mm
0.2768 to 0.2774 in.
–
Valve Clearance (Cold) 0.23 to 0.27 mm
0.0091 to 0.0106 in.
–
KiSC issued 03, 2007 A