Kubota ME5700 Workshop Manual page 149

ME5700, WSM
Oil Clearance between Crankshaft Journal and Crankshaft
Bearing 2
1. Put a strip of plastigage (Code No. 07909-30241) on the
center of the journal.
2. Install the bearing case and tighten the baring 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 clearance exceeds the allowable limit, replace the
crankshaft bearing 2.
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.
Be sure not to move the crankshaft while the bearing case
screws are tightened.
Factory spec.
Oil clearance between
crankshaft journal and
crankshaft bearing 2
Allowable limit
Crankshaft journal O.D. Factory spec.
Crankshaft bearing 2
Factory spec.
I.D.
(Reference)
Undersize crankshaft bearing 2
Undersize Bearing
0.2 mm
Crankshaft bearing 2
0.008 in.
0.4 mm
Crankshaft bearing 2
0.016 in.
Undersize dimensions of crankshaft journal
0.2 mm
Undersize
0.008 in.
2.8 to 3.2 mm radius
Dimension A
0.1102 to 0.1260 in. radius
1.0 to 1.5 mm dia.
Dimension B
0.0394 to 0.0591 in. dia.
51.721 to 51.740 mm dia.
Dimension C
2.03626 to 2.03700 in. dia.
The crankshaft journal must be fine-finished to higher than
1-S55
ENGINE
0.040 to 0.104 mm
0.00157 to 0.00409 in.
0.20 mm
0.0079 in.
51.921 to 51.940 mm
2.04413 to 2.04488 in.
51.980 to 52.039 mm
2.04645 to 2.04878 in.
Code Number Marking
17331-23911 020 US
17331-23921 040 US
0.4 mm
0.016 in.
2.8 to 3.2 mm radius
0.1102 to 0.1260 in. radius
1.0 to 1.5 mm dia.
0.0394 to 0.0591 in. dia.
51.521 to 51.540 mm dia.
2.02838 to 2.02913 in. dia.
(0.4-S)
0000002516E
KiSC issued 04, 2006 A