Crankshaft - Kubota L3200 Workshop Manual

L3200, WSM

(4) Crankshaft

Side Clearance of Crankshaft
1. Set a dial indicator with its tip on the end of the crankshaft.
2. Measure the side clearance by moving the crankshaft to the front
and rear.
3. If the measurement exceeds the allowable limit, replace the
thrust bearings.
4. If the same size bearing is ineffective because of the crankshaft
journal wear, replace it with an oversize one referring to the table
and figure.
Factory spec.
Crankshaft side
clearance
Allowable limit
(Reference)
• Oversize dimensions of crankshaft journal
Oversize
0.008 in.
54.5 to 54.7 mm
Dimension A
2.1457 to 2.1535 in.
26.20 to 26.25 mm
Dimension B
1.0315 to 1.0335 in.
2.8 to 3.2 mm radius
Dimension C
0.1102 to 0.1260 in. radius
The crankshaft journal must be fine-finished to higher than ∇∇∇∇
Crankshaft Alignment
1. Support the crankshaft with V blocks on the surface plate at both
end journals.
2. Set a dial indicator with its tip on the intermediate journal.
3. Measure the crankshaft alignment.
4. If the measurement exceeds the allowable limit, replace the
crankshaft.
Crankshaft alignment Allowable limit
1-S53
0.15 to 0.31 mm
0.0059 to 0.0122 in.
0.5 mm
0.0197 in.
0.2 mm
54.6 to 54.8 mm
2.1496 to 2.1575 in.
26.40 to 26.45 mm
1.0394 to 1.0413 in.
2.8 to 3.2 mm radius
0.1102 to 0.1260 in. radius
(0.4S)
0.02 mm
0.00079 in.
KiSC issued 12, 2006 A
ENGINE
0.4 mm
0.016 in.
W1032880
W1033001