Kubota SM-E3B Series - Servicing; Undersize Crankshaft Bearing and Journal Dimensions; Replacing Crankshaft Bearing 1

S-67
SM-E3B SERIES WSM
DIESEL ENGINE
Oil Clearance between Crankshaft Journal and Crankshaft
Bearing 1 (Continued)
(Reference)
• Undersize crankshaft bearing 1
• Undersize dimensions of crankshaft journal
W1044484
Replacing Crankshaft Bearing 1
(When removing)
1. Press out the used crankshaft bearing 1 using a crankshaft
bearing 1 replacing tool. (Refer to “SPECIAL TOOLS”.)
(When installing)
1. Clean a new crankshaft bearing 1 and crankshaft journal bore,
and apply engine oil to them.
2. Using a crankshaft bearing 1 replacing tool, press in a new
bearing 1 (2) so that its seam (1) directs toward the exhaust
manifold side. (See figure.)
W10342000
Undersize Models Bearing Code Number Marking
0.20 mm
0.0079 in.
Z482-E3B
D722-E3B
D782-E3B
Crankshaft
bearing 1 02
15861-23910
020 US
Z602-E3B
D902-E3B
1G460-23910
0.40 mm
0.016 in.
Z482-E3B
D722-E3B
D782-E3B
Crankshaft
bearing 1 04
15861-23920
040 US
Z602-E3B
D902-E3B
1G460-23920
Undersize Models
0.20 mm
0.0079 in.
0.40 mm
0.016 in.
Dimension
A
All models
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
*Dimension
B
All models
1.0 to 1.5 mm relief
0.040 to 0.059 in. relief
1.0 to 1.5 mm relief
0.040 to 0.059 in. relief
Dimension
C
Z482-E3B
D722-E3B
D782-E3B
39.734 to 39.750 mm dia.
1.5644 to 1.5649 in. dia.
39.534 to 39.550 mm dia.
1.5565 to 1.5570 in. dia.
Z602-E3B
D902-E3B
43.734 to 43.750 mm dia.
1.7219 to 1.7224 in. dia.
43.534 to 43.550 mm dia.
1.7140 to 1.7145 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
(0.040 to 0.059 in.) relief.
Dimension (A) Factory spec.
0 to 0.3 mm
0 to 0.01 in.
(1) Seam
(2) Crankshaft Bearing 1
(3) Cylinder Block
(A) Dimension
(B) 0.37 rad (21 °)
[a] Z482-E3B, D722-E3B, D782-E3B
[b] Z602-E3B, D902-E3B
KiSC issued 03, 2011 A