Kubota WSM STa-30, Workshop Manual

Page: 69 / 359

1-S7
ST
α
-30 · ST
α
-35, WSM ENGINE
ENGINE BODY (Continued)
W1013874
Item Factory Specification Allowable Limit
Piston Pin Bore I.D. 25.000 to 25.013 mm
0.98425 to 0.98476 in.
25.05 mm
0.9862 in.
Second Ring to Ring Groove D1463-M Clearance 0.093 to 0.120 mm
0.00366 to 0.00472 in.
0.2 mm
0.0079 in.
D1703-M Clearance 0.093 to 0.128 mm
0.00366 to 0.00504 in.
0.2 mm
0.0079 in.
Oil Ring to Ring Groove Clearance 0.020 to 0.060 mm
0.00079 to 0.00205 in.
0.15 mm
0.0059 in.
Top Ring D1463-M Ring Gap 0.20 to 0.35 mm
0.00787 to 0.01378 in.
1.25 mm
0.0492 in.
D1703-M Ring Gap 0.25 to 0.40 mm
0.0098 to 0.0157 in.
1.25 mm
0.0492 in.
Second Ring Ring Gap 0.30 to 0.45 mm
0.0118 to 0.0177 in.
1.25 mm
0.0492 in.
Oil Ring Ring Gap 0.25 to 0.45 mm
0.0098 to 0.0177 in.
1.25 mm
0.0492 in.
Connecting Rod Alignment – 0.05 mm
0.0020 in.
Piston Pin to Small End Bushing
Piston Pin
Small End Bushing
Clearance
O.D.
I.D.
0.014 to 0.038 mm
0.00055 to 0.00150 in.
25.002 to 25.011 mm
0.98433 to 0.98468 in.
25.025 to 25.040 mm
0.98523 to 0.98582 in.
0.15 mm
0.0059 in.
–
–
Crankshaft Alignment – 0.02 mm
0.00079 in.
Crankshaft Journal to Crankshaft Bearing
1
Crankshaft Journal
Crankshaft Bearing 1
Oil Clearance
O.D.
I.D.
0.040 to 0.118 mm
0.00157 to 0.00465 in.
51.921 to 51.940 mm
2.04413 to 2.04488 in.
51.980 to 52.039 mm
2.04646 to 2.04878 in.
0.2 mm
0.0079 in.
–
–
Crankshaft Journal to Crankshaft Bearing
2
Crankshaft Journal
Crankshaft Bearing 2
Oil Clearance
O.D.
I.D.
0.040 to 0.104 mm
0.00157 to 0.00409 in.
51.921 to 51.940 mm
2.04413 to 2.04488 in.
51.980 to 52.025 mm
2.04646 to 2.04823 in.
0.2 mm
0.0079 in.
–
–
KiSC issued 11, 2006 A