Kubota GR1600EU, Workshop Manual, Page: 132 / 285

ENGINE GR1600EU, WSM
1-S46
(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.
(Reference)
• Oversize thrust bearing
• Oversize dimensions of crankshaft journal
9Y1210595ENS0080US0
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.
9Y1210595ENS0081US0
Crankshaft side
clearance
Factory specification
0.15 to 0.30 mm
0.0059 to 0.011 in.
Allowable limit
0.50 mm
0.0197 in.
Oversize Bearing Code Number Marking
0.2 mm
0.008 in.
Thrust bearing 1 02 15261-23950 020 OS
Thrust bearing 2 02 15261-23970 020 OS
0.4 mm
0.016 in.
Thrust bearing 1 04 15261-23960 040 OS
Thrust bearing 2 04 15261-23980 040 OS
Oversize
0.20 mm
0.0079 in.
0.40 mm
0.015 in.
Dimension A
23.40 to 23.45 mm
0.9213 to 0.9232 in.
23.80 to 23.85 mm
0.9370 to 0.9390 in.
Dimension B
46.10 to 46.30 mm
1.815 to 1.823 in.
46.30 to 46.50 mm
1.823 to 1.831 in.
Dimension C
1.8 to 2.2 mm radius
0.071 to 0.086 in. radius
1.8 to 2.2 mm radius
0.071 to 0.086 in. radius
The crankshaft journal must be fine-finished to higher than Rmax = 0.8S.
Crankshaft alignment Allowable limit
0.02 mm
0.0008 in.
KiSC issued 11, 2013 A