Numerals stamped on crank
webs (Journals diameter)
1
2
3
Alphabets A
Green Black
Colorless
stamped B
on mating
Black
Colorless
Yellow
surface
c
Colorless
Yellow
Blue
New standard bearing to be installed.
5) Using gaging plastic, check bearing clearance
with new standard bearing selected.
If clearance still exceeds its limit, use next
thicker bearing and recheck clearance.
6) When replacing crankshaft or cylinder block
.
due to any reason, select new standard
bearings to be installed by referring to the
numerals stamped on new crankshaft or the
alphabets stamped on the mating surface of
new cylinder block.
UNDERSIZE BEARING (0.25 mm):
l
0.25 mm undersize bearing is available in 5
kinds differing in thickness.
To distinguish them, each bearing is painted
in following colors at position indicated in
Fig. 3-5-48.
Each color indicates following thickness at
center of bearing.
Color painted
Bearing thickness
I
Green
&
Red
2.121
-
2.125 mm
(0.0835
-
0.0836 in.
)
I
I
I
Black
&
Red
2.124
-
2.128 mm
(0.0836
-
0.0837 in.)
Red only
2.127
-
2.131 mm
(0.0837
-
0.0838 in.)
I
Yellow
&
Red
2.130
-
2.134 mm
(0.0838
-
0.0839 in.)
Blue
&
Red
2.133
-
2.137 mm
(0.0839
-
0.0840 in.)
I
1
1. Paint
Fig.
3-5-48
Faints on undersize bearing
l If crankshaft journal is necessary to
be
reground to undersize, regrind the journal and
select undersize bearing to be used as follows.
1) Regrind journal to following finished dia-
meter.
I
Finished diameter
44.732 -44.750 mm
(1.7612
-
1.7618 in.)
I
2) Using micrometer, measure reground journal
diameter. Measurement should be carried out
in two directions perpendicular to each other
in order to check for out-of-round.
3) From the journal diameter measured above
and the alphabets stamped on mating surface
of cylinder block, select the undersize bearing
to be installed by referring to the table
shown below.
Check bearing clearance with undersize
bearing selected.
3-33
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