Suzuki SX4 Service Manual page 347

Selection of Main Bearings
Standard bearing
If bearing is in malcondition, or bearing clearance is out
of specification, select a new standard bearing according
to the following procedure and install it.
1) First check journal diameter. As shown in figure,
crank web No.2 has stamped numbers.
Three kinds of numbers ("1", "2" and "3") represent
the following journal diameters.
Stamped numbers on crank web No.2 represent
journal diameters marked with an arrow in figure
respectively. For example of M15 engine, stamped
number "1" indicates that corresponding journal
diameter is 51.9940 – 52.0000 mm (2.0471 – 2.0472
in.).
Crankshaft journal diameter
Stamped
numbers
51.9940 – 52.0000 mm
1
(2.0471 – 2.0472 in.)
51.9880 – 51.9939 mm
2
(2.0468 – 2.0470 in.)
51.9820 – 51.9879 mm
3
(2.0465 – 2.0467 in.)
2) Next, check bearing cap bore diameter without
bearing. On mating surface of cylinder block, five
alphabets are stamped as shown in figure.
Three kinds of alphabets ("A", "B" and "C") or
numbers ("1", "2" and "3") represent the following
cap bore diameters.
Stamped alphabets or numbers on cylinder block
represent bearing cap bore diameter marked with an
arrow in figure respectively.
For example, stamped "A" or "1" indicates that
corresponding bearing cap bore diameter is 56.0000
– 56.0060 mm (2.2048 – 2.2049 in.).
Journal diameter
I2RH0B140142-02
Crankshaft bearing cap bore
Stamped
Bearing cap bore diameter (without
alphabet
(number)
56.0000 – 56.0060 mm
A or 1
(2.2048 – 2.2049 in.)
56.0061 – 56.0120 mm
B or 2
(2.2050 – 2.2051 in.)
56.0121 – 56.0180 mm
C or 3
(2.2052 – 2.2054 in.)
3) There are 5 kinds of standard bearings differing in
thickness. To distinguish them, they are painted in
the following colors at the position as indicated in
figure.
Each color indicated the following thickness at the
center of bearing.
Standard size of crankshaft main bearing
thickness
Color
Bearing thickness
painted
Purple 1.992 – 1.996 mm (0.07843 – 0.07858 in.)
Brown 1.995 – 1.999 mm (0.07855 – 0.07870 in.)
Green 1.998 – 2.002 mm (0.07867 – 0.07882 in.)
Black 2.001 – 2.005 mm (0.07878 – 0.07893 in.)
Colorless
2.004 – 2.008 mm (0.07890 – 0.07906 in.)
(no paint)
1. Paint
Engine Mechanical: 1D-65
bearing)
I2RH0B140143-02
I2RH01140191-01