Kubota D1503-M Workshop Manual page 171

03-M-E3B, 03-M-DI-E3B, 03-M-E3BG WSM
Oil Clearance between Crankshaft Journal and Crankshaft
Bearing 2
1. Put a strip of plastigage 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.
NOTE
• Be sure not to move the crankshaft while the bearing case
screws are tightened.
Factory spec.
Oil clearance between
crankshaft and
crankshaft bearing 2
Allowable limit
Crankshaft journal O.D. Factory spec.
Crankshaft bearing 2
Factory spec.
I.D.
(Reference)
• Undersize dimensions of crankshaft journal
Undersize
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
59.721 to 59.740 mm dia.
Dimension C, D
2.3513 to 2.3519 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.
S-93
DIESEL ENGINE
0.0400 to 0.104 mm
0.00158 to 0.00409 in.
0.20 mm
0.0079 in.
59.921 to 59.940 mm
2.3591 to 2.3598 in.
59.980 to 60.025 mm
2.3615 to 2.3631 in.
0.2 mm 0.4 mm
0.008 in. 0.02 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
59.521 to 59.540 mm dia.
2.3434 to 2.3440 in. dia.
(0.4S)
KiSC issued 07, 2008 A
W1083821