Kubota WSM STa-30, Workshop Manual

Page: 67 / 359

1-S5
ST
α
-30 · ST
α
-35, WSM ENGINE
ENGINE BODY (Continued)
W1013874
Item Factory Specification Allowable Limit
Valve Timing (Intake Valve) D1463-M Open
Close
0.14 rad. (8 °)
before T.D.C.
0.35 rad. (20 °)
after B.D.C.
–
–
D1703-M Open
Close
0.21 rad. (12 °)
before T.D.C.
0.63 rad. (36 °)
after B.D.C.
–
–
Valve Timing (Exhaust Valve) D1463-M Open
Close
1.05 rad. (60 °)
before B.D.C.
0.21 rad. (12 °)
after T.D.C.
–
–
D1703-M Open
Close
1.00 rad. (57 °)
before B.D.C.
0.21 rad. (12 °)
after T.D.C.
–
–
Valve Spring Free Length
Setting Load
Setting Length
Tilt
41.7 to 42.2 mm
1.6417 to 1.6614 in.
117.6 N
12.0 kgf
26.4 lbs
35.0 mm
1.3780 in.
–
41.2 mm
1.6220 in.
100.0 N
10.2 kgf
22.5 lbs
–
1.0 mm
0.039 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 0.00177 in.
13.973 to 13.984 mm
0.55012 to 0.55055 in.
14.000 to 14.018 mm
0.55118 to 0.55189 in.
0.15 mm
0.0059 in.
–
–
Push Rod Alignment – 0.25 mm
0.0098 in.
Tappet to Tappet Guide
Tappet
Tappet Guide
Clearance
O.D.
I.D.
0.020 to 0.062 mm
0.00079 to 0.00244 in.
23.959 to 23.980 mm
0.94327 to 0.94410 in.
24.000 to 24.021 mm
0.94488 to 0.94571 in.
0.07 mm
0.0028 in.
–
–
KiSC issued 11, 2006 A