Suzuki Swift Sport 2004 Service & Repair Manual page 345

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 the 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 the figure
respectively. For example, 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.)
Journal diameter
I2RH0B140142-01
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 the 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.).
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.)
Engine Mechanical: 1D-60
bearing)
I2RH0B140143-01