Suzuki 2006 SX4, Service Manual

Page: 294 / 1478

1D-63 Engine Mechanical:
5) Check main bearing clearance with newly selected standard bearing referring to “Main Bearing Clearance”.
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 (1) in the following colors at such position as indicated in figure.
Each color represents the following thickness at the center of bearing.
Undersize main bearing thickness
• If necessary, regrind crankshaft journal and select under-size bearing to use with it as follows.
a. Regrind journal to the following finished diameter.
Finished journal diameter
57.7380 – 57.7560 mm (2.27315 – 2.27385 in.)
b. Using micrometer, measure reground journal diameter.
Measurement should be taken in two directions perpendicular to each other in order to check for out-of-round.
c. Using journal diameter measured and alphabets stamped on lower crankcase, select an undersize bearing by
referring to the following table.
Check bearing clearance with newly selected undersize bearing.
Undersize bearing specification
Color painted Bearing thickness
Green & Red 2.1160 – 2.1190 mm (0.08331 – 0.08342 in.)
Black & Red 2.1190 – 2.1220 mm (0.08343 – 0.08354 in.)
Red only 2.1220 – 2.1250 mm (0.08355 – 0.08366 in.)
Yellow & Red 2.1250 – 2.1280 mm (0.08367 – 0.08377 in.)
Blue & Red 2.1280 – 2.1310 mm (0.08378 – 0.08389 in.)
Measured journal diameter
57.7500 – 57.7560 mm
(2.27362 – 2.27385 in.)
57.7440 – 57.7499 mm
(2.27338 – 2.27361 in.)
57.7380 – 57.7439 mm
(2.27315 – 2.27337 in.)
Alphabets stamped
on lower crankcase
A Green & Red Black & Red Red only
B Black & Red Red only Yellow & Red
C Red only Yellow & Red Blue & Red
I2RH01140192-01
I2RH01140193-01