Kubota WSM L3540-II, Workshop Manual, Page: 106 / 672

ENGINE L3540-II, L4240-II, L5040-II, L5240-II, L5740-II , WSM
1-S4
2. SERVICING SPECIFICATIONS
ENGINE BODY
Item Factory Specification Allowable Limit
Compression Pressure
(When Cranking with Starting Motor)
• Difference among Cylinders
3.6 to 4.0 MPa
36 to 41 kgf/cm
2
520 to 580 psi
–
2.5 MPa
26 kgf/cm
2
370 psi
10 % or less
Valve Clearance (When Cold) 0.18 to 0.22 mm
0.0071 to 0.0087 in.
–
Cylinder Head Surface Flatness – 0.05 mm / 500 mm
0.0020 in. / 19.7 in.
Valve Recessing Protrusion
Recessing
0.05 mm
0.0020 in.
0.15 mm
0.0059 in.
–
0.4 mm
0.0157 in.
Valve Stem to Valve Guide
• Valve Stem
• Valve Guide
Clearance
O.D.
I.D.
0.040 to 0.070 mm
0.0016 to 0.0027 in.
7.960 to 7.975 mm
0.3134 to 0.3139 in.
8.015 to 8.030 mm
0.3156 to 0.3161 in.
0.1 mm
0.004 in.
–
–
Valve Face Angle (Intake)
Angle (Exhaust)
1.0 rad
60 °
0.79 rad
45 °
–
–
Valve Seat Angle (Intake)
Angle (Exhaust)
1.0 rad
60 °
0.79 rad
45 °
–
–
Valve Spring Tilt
Free Length
Setting Load /
Setting Length
–
41.7 to 42.2 mm
1.65 to 1.66 in.
118 N / 35 mm
12.0 kgf / 35 mm
26.5 lbs / 1.4 in.
1.0 mm
0.039 in.
41.2 mm
1.6220 in.
100 N /35 mm
10.2 kgf /35 mm
22.5 lbs /1.4 in.
Rocker Arm Shaft to Rocker Arm
• Rocker Arm Shaft
• Rocker Arm
Clearance
O.D.
I.D.
0.016 to 0.045 mm
0.00063 to 0.0017 in.
13.973 to 13.984 mm
0.55012 to 0.55055 in.
14.000 to 14.018 mm
0.55118 to 0.55188 in.
0.1 mm
0.0039 in.
–
–
Push Rod Alignment – 0.25 mm
0.0098 in.
KiSC issued 02, 2015 A