Suzuki GRAND VITARA XL-7 Owner's Manual page 319

6A2-32 ENGINE MECHANICAL (H27 ENGINE)
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 has stamped numbers and alphabet at the center.
3 kinds of numbers ("1", "2" and "3") represent the following
journal diameters.
Journal diameter :
Stamped numbers
1
2
3
1. Crankshaft
2. Crank web
2) Next, check crankcase (bearing cap) bore diameter without
bearing. On lower surface of lower crankcase 4 alphabets
are stamped as shown in the figure.
3 kinds of alphabets (A, B and C) represent the following cap
bore diameters.
Main bearing cap bore diameter :
Stamped numbers
A
B
C
1. Crankshaft pulley side
2. Stamped alphabets
3. No.1 bearing
4. No.2 bearing
5. No.3 bearing
6. No.4 bearing
Journal diameter
65.000 – 65.006 mm
(2.5590 – 2.5593 in.)
64.994 – 65.000 mm
(2.5588 – 2.5590 in.)
64.988 – 64.994 mm
(2.5586 – 2.5588 in.)
Bearing cap bore diameter
(without bearing)
70.000 – 70.006 mm
(2.7559 – 2.7561 in.)
70.006 – 70.012 mm
(2.7561 – 2.7563 in.)
70.012 – 70.018 mm
(2.7563 – 2.7566 in.)