Crankshaft Inspection; Main Journal Bearing - Honda GL1800 Service Manual

CYLINDER/PISTON/CRANKSHAFT

CRANKSHAFT INSPECTION

Hold both ends of the crankshaft and set a dial indi-
cator on a main journal.
Rotate the crankshaft two revolutions and read the
runout at two points.
Actual runout is 1/2 the total indicated reading.
SERVICE LIMIT: 0.03 mm (0.001 in)
Measure the main journals and crankpins with a
The crankshaft can-
micrometer for out-of-round and taper.
not be repaired.
SERVICE LIMITS: Taper: 0.003 mm (0.0001 in)

MAIN JOURNAL BEARING

BEARING INSPECTION
Check the main journal bearing inserts on the left
crankcase and main journal bearing caps for
unusual wear or peeling.
Check the bearing tabs for damage.
Check the thrust bearings on the rear end bearing
support of the left crankcase for wear, scoring or
discoloration and replace them if necessary.
OIL CLEARANCE INSPECTION
Clean off any oil from the bearing inserts and main
Do not rotate the
journals.
crankshaft during
Carefully install the crankshaft onto the left
inspection.
crankcase.
Put strips of plastigauge lengthwise on each main
journal, being careful to avoid the oil passage.
11-14
Out-of-round: 0.005 (0.0002 in)
OLD
AIN JOURNAL
BEARINGS
OLD
THRUST
BEARINGS