Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

Page: 479 / 834

6A2-104 ENGINE MECHANICAL (H25 ENGINE)
4) From number stamped on crank webs at its center and
alphabets stamped on crankcase lower side, determine new
standard bearing to be installed to journal, by referring to
table shown below.
For example, if number stamped on crank webs is “1” and
alphabet stamped on crankcase is “B”, install a new stan-
dard bearing painted in “Black” to its journal.
New standard size main bearing specification
5) Check bearing clearance with newly selected standard bear-
ing referring to “Main Bearing Clearance” under “Main Bear-
ings Crankshaft and Cylinder Block” in this section.
If clearance still exceeds its limit, use next thicker bearing
and recheck clearance.
UNDERSIZE BEARING (0.25 mm) :
• 0.25 mm undersize bearing is available, in five kinds varying
in thickness.
To distinguish them, each bearing is painted in following col-
ors at such position as indicated in figure.
Each color represents following thickness at the center of
bearing.
Undersize main bearing specification
• If necessary, regrind crankshaft journal and select undersize
bearing to use with it as follows.
a) Regrind journal to following finished diameter.
Finished diameter of crankshaft journal
64.738 – 64.756 mm (2.5488 – 2.5494 in.)
Number stamped on crank web
(Journal diameter)
1 2 3
Alphabet stamped
on lower crankcase
(Cap bore dia.)
A Black Colorless Yellow
B Colorless Yellow Blue
C Yellow Blue Pink
Color painted Bearing thickness
Black & Red
2.621 – 2.625 mm
(0.10319 – 0.10335 in.)
Red
2.624 – 2.628 mm
(0.10331 – 0.10346 in.)
Red & Yellow
2.627 – 2.631 mm
(0.10343 – 0.10358 in.)
Red & Blue
2.630 – 2.634 mm
(0.10355 – 0.10370 in.)
Red & Pink
2.633 – 2.637 mm
(0.10367 – 0.10381 in.)
1. Paint