ENGINE
B1220, B1620, B1820, WSM
1-S52
(EU)
Oil Clearance between Crankshaft Journal and Crankshaft
Bearing 1
1. Measure the O.D. of the crankshaft front journal with an outside
micrometer.
2. Measure the I.D. of the crankshaft bearing 1 with an inside
micrometer, and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
crankshaft bearing 1.
4. If the same size bearing is useless because of the crankshaft
journal wear, replace it with an undersize one referring to the
table and the figure.
(Reference)
• Undersize crankshaft bearing 1
• Undersize dimensions of crankshaft journal
9Y1210272ENS0087US0
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.)
9Y1210272ENS0088US0
Oil Clearance between
crankshaft journal and
crankshaft bearing 1
Factory specification
0.0340 to 0.106 mm
0.00134 to 0.00417 in.
Allowable limit
0.20 mm
0.0079 in.
Crankshaft journal O.D.
Factory specification
39.934 to 39.950 mm
1.5722 to 1.5728 in.
Crankshaft bearing 1 I.D.
Factory specification
39.984 to 40.040 mm
1.5742 to 1.5763 in.
Undersize
Bearing
Code Number
Marking
0.20 mm
0.0079 in.
Crankshaft bearing 1 02
15861-23910
020 US
0.40 mm
0.016 in.
Crankshaft bearing 1 04
15861-23920
040 US
Undersize
Models
0.20 mm
0.0079 in.
0.40 mm
0.0016 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
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.
The crankshaft journal must be fine-finished to higher than Rmax=0.8S
*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 specification
0 to 0.3 mm
0 to 0.01 in.
(1) Seam
(2) Crankshaft Bearing 1
(3) Cylinder Block
KiSC issued 07, 2011 A
Summary of Contents for B1220
Page 1: ...WORKSHOP MANUAL TRACTOR B1220 B1620 B1820 KiSC issued 07 2011 A ...
Page 3: ...I INFORMATION KiSC issued 07 2011 A ...
Page 9: ...INFORMATION B1220 B1620 B1820 WSM I 5 EU 9Y1210272INI0002US0 KiSC issued 07 2011 A ...
Page 13: ...G GENERAL KiSC issued 07 2011 A ...
Page 68: ...1 ENGINE KiSC issued 07 2011 A ...
Page 126: ...2 CLUTCH KiSC issued 07 2011 A ...
Page 127: ...CONTENTS 1 LINKAGE MECHANISM 2 M1 MECHANISM KiSC issued 07 2011 A ...
Page 141: ...3 TRANSMISSION KiSC issued 07 2011 A ...
Page 177: ...4 REAR AXLE KiSC issued 07 2011 A ...
Page 178: ...CONTENTS 1 STRUCTURE 4 M1 MECHANISM KiSC issued 07 2011 A ...
Page 186: ...5 BRAKES KiSC issued 07 2011 A ...
Page 203: ...6 FRONT AXLE KiSC issued 07 2011 A ...
Page 204: ...CONTENTS 1 STRUCTURE 6 M1 MECHANISM KiSC issued 07 2011 A ...
Page 218: ...7 STEERING KiSC issued 07 2011 A ...
Page 244: ...8 HYDRAULIC SYSTEM KiSC issued 07 2011 A ...
Page 274: ...9 ELECTRICAL SYSTEM KiSC issued 07 2011 A ...
Page 277: ...ELECTRICAL SYSTEM B1220 B1620 B1820 WSM 9 M2 EU 2 B1220 WITH OPC TYPE KiSC issued 07 2011 A ...