ENGINE
WG972-E4, WSM
1-S54
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
9Y1211108ENS0094US0
Replacing Crankshaft Bearing 1
(When removing)
1. Press out the used crankshaft bearing 1 using a crankshaft
bearing 1 replacing tool.
(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.)
9Y1211108ENS0095US0
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
43.934 to 43.950 mm
1.7297 to 1.7303 in.
Crankshaft bearing 1 I.D. Factory specification
43.984 to 44.040 mm
1.7317 to 1.7338 in.
Undersize Bearing Code Number Marking
0.2 mm
0.008 in.
Crankshaft bearing 1 02 1G460-23910 020 US
0.4 mm
0.02 in.
Crankshaft bearing 1 04 1G460-23920 040 US
Undersize
0.2 mm
0.008 in.
0.4 mm
0.02 in.
Dimension A
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
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
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.
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
(A) Dimension
(a) 0.37 rad (21 °)
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