Kubota GR1600EC2, Workshop Manual, Page: 115 / 241

1-S48
GR1600EC2, WSM ENGINE
Oil Clearance between Crankshaft Journal and Crankshaft
Bearing 2 (Crankshaft Bearing 3)
1. Put a strip of plastigage (Code No. 07909-30241) on the center
of the journal.
2. Install the bearing case and tighten the bearing case screws 1 to
the specified torque, and remove the bearing case again.
3. Measure the amount of the flattening with the scale, and get the
oil clearance.
4. If the oil clearance exceeds the allowable limit, replace the
crankshaft bearing 2 (crankshaft bearing 3).
5. If the same size bearing is useless because of the crankshaft
journal wear, replace it with an undersize one referring to the
table and figure.
NOTE
■
• Be sure not to move the crankshaft while the bearing case
screws are tightened.
(Reference)
• Undersize crankshaft bearing 2 and 3
• Undersize dimensions of crankshaft journal
W10344030
Oil clearance between
crankshaft journal and
crankshaft bearing 2
(crankshaft bearing 3)
Factory spec.
0.028 to 0.051 mm
0.00110 to 0.00201 in.
Allowable limit
0.20 mm
0.0079 in.
Crankshaft journal O.D.
(Flywheel side)
Factory spec.
43.934 to 43.950 mm
1.72968 to 1.73031 in.
Crankshaft bearing 2
I.D.
Factory spec.
43.984 to 44.026 mm
1.73165 to 1.73331 in.
Crankshaft journal O.D.
(Intermediate)
Factory spec.
39.934 to 39.950 mm
1.57221 to 1.57284 in.
Crankshaft bearing 3 I.D. Factory spec.
39.984 to 40.026 mm
1.57417 to 1.57583 in.
Undersize Bearing Code Number Marking
0.2 mm
0.008 in.
Crankshaft bearing 2 02 15694-23930 020 US
Crankshaft bearing 3 02 15861-23860 020 US
0.4 mm
0.016 in.
Crankshaft bearing 2 04 15694-23940 040 US
Crankshaft bearing 3 04 15861-23871 040 US
Undersize
0.2 mm
0.008 in.
0.4 mm
0.016 in.
Dimension A
1.8 to 2.2 mm radius
0.071 to 0.087 in. radius
1.8 to 2.2 mm radius
0.071 to 0.087 in. radius
*Dimension B
1.0 to 1.5 mm relief
0.0394 to 0.0591 in. relief
1.0 to 1.5 mm relief
0.0394 to 0.0591 in. relief
Dimension C
39.734 to 39.750 mm dia.
1.56433 to 1.56496 in. dia.
39.534 to 39.550 mm dia.
1.55646 to 1.55709 in. dia.
Dimension D
43.734 to 43.750 mm dia.
1.72181 to 1.72244 in. dia.
43.534 to 43.550 mm dia.
1.71394 to 1.71457 in. dia.
(0.8S)
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
(0.0394 to 0.0591 in.) relief.
KiSC issued 07, 2006 A