Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 580

4) From number stamped on crank web No.2 and alphabets
stamped on lower crankcase, determine new standard bear-
ing to be installed to journal, by referring to table shown
below.
For example, if number stamped on crank web No.2 is "1"
and alphabet stamped on lower crankcase is "B", install a
new standard bearing painted in "Black" to its journal.
New standard size crankshaft bearing specification
Alphabet stamped
on lower crankcase
(Cap bore dia.)
5) Check bearing clearance with newly selected standard bear-
ing referring to "Main Bearing Clearance" under "Main Bear-
ings" in this section.
If clearance still exceeds its limit, use next thicker bearing
and recheck clearance.
UNDERSIZE BEARING (0.25 mm (0.009842 in.)) :
• 0.25 mm (0.009842 in.) undersize bearing is available, in five
kinds varying in thickness.
To distinguish them, each bearing is painted in the following
colors at such position as indicated in figure.
Each color represents the following thickness at the center of
bearing.
Crankshaft undersize bearing thickness
Color painted
Green & Red
Black & Red
Red only
Yellow & Red
Blue & Red
1. Paint
ENGINE MECHANICAL (J20 ENGINE) 6A4-91
Number stamped on crank web
(Journal diameter)
1 2
A Green Black
B Black Colorless
C Colorless Yellow
New standard bearing to be
installed.
Bearing thickness
2.115 – 2.119 mm
(0.08327 – 0.08342 in.)
2.118 – 2.122 mm
(0.08339 – 0.08354 in.)
2.121 – 2.125
(0.08351 – 0.08366 in.)
2.124 – 2.128 mm
(0.08363 – 0.08377 in.)
2.127 – 2.131 mm
(0.08374 – 0.08413 in.)
3
Colorless
Yellow
Blue