Service Manual

7-14 CAMSHAFT/CRANKSHAFT
Crankshaft, Connecting Rod
•
Measure the crankpin width [A] with a dial caliper.
If the crankpin width is more than the service limit, replace
the crankshaft.
Crankpin Width
Service Limit: 24.17 mm (0.95 in.)
Connecting Rod Big End Bearing/Crankpin Wear
•
Apply a light film of oil on the thread of the cap bolts.
•
Install the cap bolts and tighten the bolts to the specified
torque (see Piston Installation in Engine Top End chap-
ter).
•
Measure the inside diameter [A] of big end at several
points with a telescoping gauge or inside micrometer.
If the inside diameter is more than the service limit, re-
place the connecting rod with a new one.
Connecting Rod Big End Inside Diameter
Service Limit: 31.040 mm (1.222 in.)
•
Measure the crankpin outside diameter [A].
Use a micrometer to measure several points around the
crankpin circumference.
If the crankpin diameter is less than the service limit, re-
place the crankshaft with a new one.
Crankpin Outside Diameter
Service Limit: 30.97 mm (1.219 in.)
Crankshaft Runout
•
Measure the crankshaft runout.
Set the crankshaft in a flywheel alignment jig [ A] or on V
blocks gauge.
Set a dial gauge [B] against both journals.
Turn the crankshaft slowly to measure the runout. The dif-
ference between the highest and lowest dial gauge read-
ings (TIR) is the amount of runout.
If the measurement exceeds the service limit, replace the
crankshaft.
Crankshaft Runout
Service Limit: 0.05 mm (0.002 in.) TIR