15-26
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CYLINDER BLOCK
Check each cylinder block I.D. code letter [1] in the
position shown, and record it.
• The cylinder block I.D. code letters are for the No.1
and the subsequent number journals when viewed
from the left side.
Cylinder block I.D.: 54 mm (2.1 in)
Select the correct bearing by referring to the crankshaft
main journal code number and the cylinder block I.D.
code letter.
Crankshaft main bearing selection table:
Selection table:
The main bearings are available in the seven I.D. colors
(Black, Brown, Green, Yellow, Pink, Red and White in
this order) [1] at intervals of 0.003 mm (0.0001 in) in
tolerance.
Select the bearings so that the oil clearance is 0.018 –
0.036 mm (0.0007 – 0.0014 in).
Align the projection [2] on the bearing with the cutout in
the cylinder block and in the crankcase.
Install the bearing with care not to damage the sliding
surface.
Check the crankshaft main bearing oil clearance after
installing the selected bearing (page 15-23).
Code
letter
Tolerance
A –0.004 – +0.002 mm (–0.0002 – +0.0001 in)
B +0.002 – +0.008 mm (+0.0001 – +0.0003 in)
C +0.008 – +0.014 mm (+0.0003 – +0.0006 in)
D +0.014 – +0.020 mm (+0.0006 – +0.0008 in)
[1]
No.1 MAIN
JOURNAL
No.5 MAIN
JOURNAL
Crankshaft
main journal
code number
Cylinder block I.D. code letter
ABCD
Bearing identification color
1 White Red Pink Yellow
2 Red Pink Yellow Green
3 Pink Yellow Green Brown
4 Yellow Green Brown Black
Code
letter
I.D. color Tolerance
HWhite
–0.004 – –0.001 mm
(–0.0002 – –0.00004 in)
GRed
–0.001 – +0.002 mm
(–0.00004 – +0.0001 in)
FPink
+0.002 – +0.005 mm
(+0.0001 – +0.0002 in)
EYellow
+0.005 – +0.008 mm
(+0.0002 – +0.0003 in)
DGreen
+0.008 – +0.011 mm
(+0.0003 – +0.0004 in)
CBrown
+0.011 – +0.014 mm
(+0.0004 – +0.0006 in)
BBlack
+0.014 – +0.017 mm
(+0.0006 – +0.0007 in)
Main bearing center thickness: 2.0 mm (0.08 in)
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