Kubota WSM STa-30, Руководство по ремонту

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1-S42
ST
α
-30 · ST
α
-35, WSM ENGINE
(D) Crankshaft
Side Clearance of Crankshaft
1. Move the crankshaft to the flywheel side.
2. Set a dial indicator to the crankshaft.
3. Measure the end play by pulling the crankshaft toward the crank
gear.
4. If the measurement exceeds the allowable limit, replace the
thrust bearing 1 and 2.
(Reference)
• Oversize thrust bearing
• Oversize dimensions of crankshaft journal
W1032880
Crankshaft Alignment
1. Support the crankshaft with V blocks on the surface plate and set
a dial indicator with its tip on the intermediate journal at right
angle.
2. Rotate the crankshaft on the V blocks and get the misalignment
(half of the measurement).
3. If the misalignment exceeds the allowable limit, replace the
crankshaft.
W1033001
Crankshaft side
clearance
Factory spec.
0.15 to 0.35 mm
0.0059 to 0.0138 in.
Allowable limit
0.5 mm
0.0197 in.
Oversize Bearing Code Number Marking
0.2 mm
0.008 in.
Thrust bearing 1 02 15521-23950 020 OS
Thrust bearing 2 02 19202-23970 020 OS
0.4 mm
0.016 in.
Thrust bearing 1 04 15521-23960 040 OS
Thrust bearing 2 04 19202-23980 040 OS
Oversize
Dimension
0.2 mm
0.008 in. 0.4 mm
0.016 in.
A
26.20 to 26.25 mm
1.0315 to 1.0335 in. 26.40 to 26.45 mm
1.0394 to 1.0413 in.
B
54.5 to 54.7 mm
2.1456 to 2.1535 in. 54.6 to 54.8 mm
2.1496 to 2.1574 in.
C
2.8 to 3.2 mm radius
0.1102 to 0.1260 in. radius 2.8 to 3.2 mm radius
0.1102 to 0.1260 in. radius
(0.8-S)
The crankshaft journal must be fine-finished to higher than
∇∇∇∇
Crankshaft alignment Allowable limit
0.02 mm
0.00079 in.
KiSC issued 11, 2006 A