wsm wg972-e4 Workshop Manual page 145

WG972-E4, WSM
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.
Factory specification
Oil Clearance between
crankshaft journal and
crankshaft bearing 1
Allowable limit
Crankshaft journal O.D. Factory specification
Crankshaft bearing 1 I.D. Factory specification
(Reference)
• Undersize crankshaft bearing 1
Undersize Bearing
0.2 mm
Crankshaft bearing 1 02
0.008 in.
0.4 mm
Crankshaft bearing 1 04
0.02 in.
• Undersize dimensions of crankshaft journal
0.2 mm
Undersize
0.008 in.
1.8 to 2.2 mm radius
Dimension A
0.071 to 0.086 in. radius
1.0 to 1.5 mm relief
*Dimension B
0.040 to 0.059 in. relief
43.734 to 43.750 mm dia.
Dimension C
1.7219 to 1.7224 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.
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.)
Dimension (A) Factory specification
(1) Seam
(2) Crankshaft Bearing 1
(3) Cylinder Block
1-S54
ENGINE
0.0340 to 0.106 mm
0.00134 to 0.00417 in.
0.20 mm
0.0079 in.
43.934 to 43.950 mm
1.7297 to 1.7303 in.
43.984 to 44.040 mm
1.7317 to 1.7338 in.
Code Number Marking
1G460-23910 020 US
1G460-23920 040 US
0.4 mm
0.02 in.
1.8 to 2.2 mm radius
0.071 to 0.086 in. radius
1.0 to 1.5 mm relief
0.040 to 0.059 in. relief
43.534 to 43.550 mm dia.
1.7140 to 1.7145 in. dia.
9Y1211108ENS0094US0
0 to 0.3 mm
0 to 0.01 in.
(A) Dimension
(a) 0.37 rad (21 °)
9Y1211108ENS0095US0
KiSC issued 07, 2015 A