Crankshaft - Kubota WSM 07-E3B Series Workshop Manual

07-E3B SERIES, WSM

(4) Crankshaft

Crankshaft Side Clearance
1. Set a dial indicator with its tip on the end of the crankshaft (1).
2. Measure the side clearance by moving the crankshaft (1) to the
front and rear.
3. If the measurement exceeds the allowable limit, replace the
thrust bearings.
4. If the same size bearing is out of specifications because of the
crankshaft journal wear, replace it with an oversize one referring
to the table and figure.
Factory spec.
Side clearance of
crankshaft
Allowable limit
(Reference)
• Oversize dimensions of crankshaft journal.
[V2607-DI-E3B / V2607-DI-T-E3B]
0.20 mm
Oversize
0.0079 in.
37.50 to 37.70 mm
Dimension A
1.477 to 1.484 in.
26.20 to 26.25 mm
Dimension B
1.032 to 1.035 in.
2.8 to 3.2 mm radius
Dimension C
0.11 to 0.12 in. radius
The crankshaft journal must be fine-finished to higher than 
[V3007-DI-T-E3B / V3307-DI-T-E3B]
0.20 mm
Oversize
0.0079 in.
41.10 to 42.10 mm
Dimension A
1.619 to 1.657 in.
28.20 to 28.25 mm
Dimension B
1.111 to 1.112 in.
2.8 to 3.2 mm radius
Dimension C
0.11 to 0.12 in. radius
The crankshaft journal must be fine-finished to higher than 
(1) Crankshaft
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 value).
3. If the misalignment exceeds the allowable limit, replace the
crankshaft.
Crankshaft alignment Allowable limit
S-103
ENGINE
0.15 to 0.35 mm
0.0059 to 0.013 in.
0.50 mm
0.020 in.
0.40 mm
0.016 in.
37.60 to 37.80 mm
1.481 to 1.488 in.
26.40 to 26.45 mm
1.040 to 1.041 in.
2.8 to 3.2 mm radius
0.11 to 0.12 in. radius
(0.8S)
0.40 mm
0.016 in.
41.20 to 42.20 mm
1.622 to 1.661 in.
28.40 to 28.45 mm
1.119 to 1.120 in.
2.8 to 3.2 mm radius
0.11 to 0.12 in. radius
(0.8S)
(A) Side Clearance of Crankshaft
W1066738
0.02 mm
0.0008 in.
W1067285
KiSC issued 06, 2020 A