Crankshaft Servicing; Crankshaft Side Clearance; Oversize Dimensions Of Crankshaft Journal; Crankshaft Alignment - Kubota KX080-3 Workshop Manual

WSM KX080-3 Service
(4) Crankshaft

Crankshaft Side Clearance

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 useless 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.

0.2 mm
Oversize
0.008 in.
169.1 to 169.15 mm
Dimension A
6.6575 to 6.6594 in.
29.20 to 29.25 mm
Dimension B
1.1496 to 1.1515 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 block 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 block and get the misalignment
(half of the measurement).
3. If the misalignment exceeds the allowable limit, replace the
crankshaft.
Crankshaft alignment Allowable limit
III-S-158
Engine
0.15 to 0.31 mm
0.0059 to 0.0122 in.
0.50 mm
0.0197 in.
0.4 mm
0.016 in.
169.2 to 169.25 mm
6.6614 to 6.6634 in.
29.40 to 29.45 mm
1.1574 to 1.1594 in.
2.8 to 3.2 mm radius
0.1102 to 0.1260 in. radius
(0.8S)
W1066738
0.02 mm
0.00079 in.
W1067285