Suzuki Boulevard M50, Service Manual

Page: 94 / 454

3-48 ENGINE
CRANKCASE/CRANKSHAFT BEARING INSPECTION
• Inspect the crankshaft and crankshaft journal bearings for any
damage. If any, replace them with a specified set of bearings.
• Measure the crankshaft journal O.D.
1
by using the special
tool.

Crankshaft journal O.D.
1
Standard: 47.965 – 47.980 mm (1.8884 – 1.8890 in)

09900-20202: Micrometer (25 – 50 mm)
• Measure the crankshaft journal bearing I.D.
2
by using the
special tool.

Crankshaft journal bearing I.D.
2
Standard: 48.000 – 48.015 mm (1.8898 – 1.8904 in)

09900-20508: Cylinder gauge set
• If each crankshaft journal bearing I.D. is not within the stan-
dard range, replace them with new ones.
CRANKCASE-CRANKSHAFT BEARING SELECTION
Select the specified bearings from the crankcase bore I.D. code.
The crankcase bore I.D. code
A
“A”, “B” or “C”, is stamped on
the inside of each crankcase half.
Bearing selection table
I.D. code
A
I.D. specification Bearing
A
52.000 – 52.006 mm
(2.0472 – 2.0475 in)
Green
B
52.006 – 52.012 mm
(2.0475 – 2.0477 in)
Black
C
52.012 – 52.018 mm
(2.0477 – 2.0479 in)
Brown
SA
MP
LE