Crankshaft Thrust Bearing - Suzuki GW250 Service Manual

3-68 ENGINE

CRANKSHAFT THRUST BEARING

INSPECTION
• With the crankshaft, right-side thrust bearing and left-side
thrust bearing inserted in the upper crankcase.
• Measure the thrust clearance a between the left side thrust
bearing and crankshaft using the thickness gauge.
NOTE:
Pull the crankshaft to the left (generator side), so that there is no
clearance on the right-side thrust bearing.
 Crankshaft thrust clearance:
Standard: 0.050 – 0.105 mm (0.0020 – 0.0041 in)
 09900-20803: Thickness gauge
• If the thrust clearance exceeds the standard range, measure
the thrust bearing thickness.
• Remove the left-side thrust bearing.
• Measure the thickness of the left-side thrust bearing using the
micrometer.
• If the thickness of the left-side thrust bearing is below stan-
dard, replace it with a new one and once again perform the
thrust clearance measurement listed above, checking to
make sure it is within standard.
 Thrust bearing thickness (Left side):
Standard: 2.450 – 2.475 mm (0.0965 – 0.0974 in)
 09900-20205: Micrometer (0 – 25 mm)
• If the left-side thrust bearing is within the standard range, rein-
sert the left-side thrust bearing and remove the right-side
thrust bearing.
• With the right-side thrust bearing removed, measure the
clearance b using the thickness gauge.
NOTE:
Pull the crankshaft to the right (clutch side), so that there is no
clearance on the left-side thrust bearing.
 09900-20803: Thickness gauge
• Select a right-side thrust bearing from the selection table.
(3-69)
L: Left-side thrust bearing
R: Right-side thrust bearing