Kubota WSM 07-E3B Series Workshop Manual page 209

07-E3B SERIES, WSM
Oil Clearance between Crankshaft Journal and Crankshaft
Bearing
1. Clean the crankshaft journal (2) and crankshaft bearing.
2. Put a strip of press gauge on the center of the journal.
IMPORTANT

• Never insert the press gauge into the oil hole of the journal.
3. Install the crankcase 2 (1) and tighten the crankcase 2 mounting
screws to the specified torque, and remove the crankcase 2 (1)
again.
4. Measure the amount of the flattening with the scale and get the
oil clearance.
5. If the clearance exceeds the allowable limit, replace the
crankshaft bearing.
V2607-DI-E3B
V2607-DI-T-E3B
Crankshaft
journal O.D.
V3007-DI-T-E3B
V3307-DI-T-E3B
V2607-DI-E3B
Oil clearance
V2607-DI-T-E3B
between
crankshaft
journal and
crankshaft
V3007-DI-T-E3B
bearing
V3307-DI-T-E3B
(Reference)
• Undersize dimensions of crankshaft journal.
[V2607-DI-E3B / V2607-DI-T-E3B]
0.20 mm
Undersize
0.0079 in.
2.8 to 3.2 mm radius
Dimension A
0.11 to 0.12 in. radius
1.0 to 1.5 mm relief
*Dimension B
0.040 to 0.059 in. relief
72.777 to 72.790 mm dia.
Dimension C
2.8653 to 2.8657 in. dia.
The crankshaft journal must be fine-finished to higher than 
*Holes to be de-burred and edges rounded with 1.0 to 1.5 mm
(0.040 to 0.059 in.) relief.
[V3007-DI-T-E3B / V3307-DI-T-E3B]
0.20 mm
Undersize
0.0079 in.
2.8 to 3.2 mm radius
Dimension A
0.11 to 0.12 in. radius
1.0 to 1.5 mm relief
*Dimension B
0.040 to 0.059 in. relief
79.777 to 79.790 mm dia.
Dimension C
3.1409 to 3.1413 in. dia.
The crankshaft journal must be fine-finished to higher than 
*Holes to be de-burred and edges rounded with 1.0 to 1.5 mm
(0.040 to 0.059 in.) relief.
(1) Crankcase 2
(2) Crankshaft Journal
S-106
ENGINE
Factory 72.977 to 72.990 mm
spec. 2.8732 to 2.8736 in.
Factory 79.977 to 79.990 mm
spec. 3.1487 to 3.1492 in.
Factory 0.030 to 0.051 mm
spec. 0.0012 to 0.0020 in.
Allowable 0.20 mm
limit 0.0079 in.
Factory 0.030 to 0.073 mm
spec. 0.0012 to 0.0028 in.
Allowable 0.20 mm
limit 0.0079 in.
0.40 mm
0.016 in.
2.8 to 3.2 mm radius
0.11 to 0.12 in. radius
1.0 to 1.5 mm relief
0.040 to 0.059 in. relief
72.577 to 72.590 mm dia.
2.8574 to 2.8578 in. dia.
(0.8S)
0.40 mm
0.016 in.
2.8 to 3.2 mm radius
0.11 to 0.12 in. radius
1.0 to 1.5 mm relief
0.040 to 0.059 in. relief
79.577 to 79.590 mm dia.
3.1330 to 3.1334 in. dia.
(0.8S)
(3) Crankcase 1
W1261077
KiSC issued 06, 2020 A