Service Manual

CAMSHAFT/CRANKSHAFT 7-17
Crankshaft, Connecting Rod
Connecting Rod Removal
•
Remove the piston (see Piston Removal in the Engine
Top End chapter).
Connecting Rod Installation
•
Install the piston (see Piston Installation in the Engine Top
End chapter).
Crankshaft Removal
•
Remove:
Camshaft (see Camshaft, Tappet Removal)
Connecting Rod and Pistons (see Piston Removal in the
Engine Top End chapter)
•
Pull the crankshaft [A] out of the crankcase. Tap gently
with a wooden or plastic mallet if necessary to loosen the
crankshaft.
Crankshaft Installation
•
Clean up the crankshaft and crankcase thoroughly, espe-
cially at the bearing contact surfaces.
•
Pack some amount of high-temperature grease into the
oil seals on the crankcase.
•
Apply engine oil to the crankshaft journal.
•
Apply molybdenum disulfide oil solution to the c
rankpin.
○
The molybdenum disulfide oil solution is a mixture of en-
gine oil and molybdenum disulfide grease with a weight
ratio (10:1).
•
Carefully insert the crankshaft end into the main bearing
in the crankcase.
Cleaning/Inspection
•
After removing, clean the crankshaft and the connecting
rods with a high-flash point solvent and dry them with
compressed air.
•
Inspect the teeth of the crankshaft gear for pitting, fatigue
cracks, burrs and any evidence of improper tooth contact.
Replace the crankshaft with a new one if necessary.
•
Inspect the crankshaft and connecting rods especially at
the bearing surfaces for wear, scratches, any evidence of
improper contact or other damages.
Replace them with new ones if necessary.