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8-12 CRANKSHAFT I TRANSMISSIO.N
*If clearance exceeds the service limit. measure the
diameter of the crankshaft main journal.
Crankshaft Main Journal Diameter
Standard: 29.984 -30.000 mm
Service Limit: 29.96 mm
* If any journal has worn past the service limit. replace the
crankshaft with a new one.
* If the measured journal diameters are not less than the
service limit. but do not coincide with the original
diameter markings on the crankshaft, make new marks
on it.
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Crankshaft Main Journal Diameter Marks
None: 29.984 -29.992 mm
1: 29.993 -30.000 mm
1. Apply molybdenum disulfide grease. 3. Oil.
2. Do not apply grease. 4. Big End Cap
Crankshaft Main Bearing/Journal Wear
.Measure the bearing insert/crankshaft main journal
clearance with a plastigage.
.Crankshaft Main Journal Diameter Marks, "1" mark
or no mark
.Measure the main bearing bore diameter, and mark the
upper crankcase half in accordance with the bore
diameter.
A. Crankshaft Main Journal B. Plastigage
NOTE
0 Tighten the crankcase bolts to the specified torque (see
Exploded View).
O The mark already on the upper crankcase half should
almost coincide with the measurement.
Crankcase Main Bearing Bore Diameter Marks
0: 33.000 -33.008 mm
None: 33.009 -33.016 mm
NOTE
O Tighten the crankcase bolts to the specified torque (see
Exploded View).
ODo not turn the crankshaft during clearance measure-
ment.
OJournal clearance less than 0.025 mm can not be
measured by plastigage, however, using genuine parts
maintains the minimum standard clearance.
Crankshaft Main Bearing Insert/journal Clearance
Standard: 0.014- 0.038 mm
Service Limit: 0.08 mm
* If clearance is within the standard, no bearing replace-
ment is required.
*If clearance is between 0.038 mm and the service limit
(0.08 mm), replace the bearing inserts with inserts
painted blue. Check insert/journal clearance with the
plastigage. The clearance may exceed the standard
slightly, but it must not be less than the minimum in
order to avoid bearing seizure.
1. Crankcase Main Bearing Bore Diameter Marks, " 0"
mark or no mark