5
5-49
4st 9.9/15/20 2008
38)
Inner Diameter of Cylinder/Crank Case
Bearing Holder (Inner Diameter Code)
Cylinder is marked on its upper section with inner diameter
code 1 that indicates inner diameter of each bearing holder.
There are the following two types of bearings that are
indicated with the inner diameter code, which is to be used
for identification of proper size part.
Remarks : When cylinder/crank case is purchased as a part,
fitting bearing comes with it.
39) Thickness of Metal Bearing
(Color of Inner Diameter Code)
Bearing is painted with color a that represents thickness.
There are the following two types of bearings that are to be
selected properly.
Inner diameter code 1
Standard value
Coloring of bearing
A or X
39.000 - 39.008 mm
Blue
(1.53543 - 1.53575 in)
B or Y
39.008 - 39.016mm
Red
(1.53575 - 1.53606 in)
[Coloring (Inner Diameter Code)]
Thickness
Blue
1.488 - 1.494 mm
(0.05858 - 0.05882 in)
Red
1.494 - 1.500 mm
(0.05882 - 0.05906 in)
Inner diameter codes A and B or X and Y
represent size of each bearing section.
Crankshaft Main Journal Oil Clearance :
0.012 - 0.044 mm (0.00047 - 0.00173 in)
Functional Limit :
0.060 mm (0.00236 in)
8.
Loosen bolts in reverse order in several steps. Remove crank
case and measure width of crushed plasti-gauge on each main
journal. Replace bearing if the width is over specified value.
If the clearance is less than specified value,
check that inner diameter code is as shown
below.
1 Inner diameter code
A
or
B
AX
X
or
Y
(Upper bearing side)
Example :
(Lower bearing side)
E_MFS20C_ch05_090105.qxd 09.1.20 5:25 PM ページ 49
To Next Page
Loading...
Need help?
General
