NOTE
Do not attempt to straighten connecting rods. Straightening rods will damage both the upper bushing and lower bearing.
1. Replace the flywheel/connecting rod assembly if any of the following conditions are noted:
a. Connecting rods are bent or twisted.
b. Connecting rods do not fall under their own weight or are in a bind.
c. Sprocket teeth are worn in an irregular pattern or chipped.
d. The crankshaft (roller) bearing inner races are brinelled, burnt, scored, blued or damaged.
e. The crankshaft runout exceeds specification.
NOTE
Bluing on connecting rods is part of the hardening process and is considered a normal condition.
2. Check connecting rod bearing clearance. Orient the assembly as shown in Figure 3-135.
a. Holding the shank of each rod just above the bearing bore, pull up and down on the connecting rods.
b. Any discernible up and down movement indicates excessive lower bearing clearance. Replace the flywheel/connecting rod assembly.
3. Measure crankshaft runout if the crankshaft is suspected of being out-of-true.
NOTE
If the flywheel, connecting rods or right side bearing inner race need to be replaced, then replace the entire flywheel assembly.
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