ENGINE 3-27
CONROD BIG END SIDE CLEARANCE INSPECTION
Push the big end of the conrod to one side and measure the
side clearance with a thickness gauge.
If the clearance exceeds the limit, replace the crankshaft assem-
bly with a new one or bring the deflection and the side clearance
within the service limit by replacing the worn parts (conrod,
crank pin bearing, crank pin, etc.) with the new ones.
Conrod big end side clearance:
Service Limit: 1.0 mm (0.04 in)
09900-20803: Thickness gauge
CRANKSHAFT RUNOUT
Support the crankshaft with V-blocks as shown, with the two end
journals resting on the blocks.
Position the dial gauge, as shown, and rotate the crankshaft
slowly to read the runout.
Replace the crankshaft if the runout is more than the service
limit.
Crankshaft runout:
Service Limit: 0.08 mm (0.003 in)
09900-20607: Dial gauge (1/100 mm)
09900-20701: Magnetic stand
09900-21304: V-block set (100 mm)
CRANKSHAFT REASSEMBLY
• When rebuilding the crankshaft, the width A between the
webs should be within the specified range.
Crank web to web width A:
Standard: 33.95 – 34.05 mm (1.337 – 1.341 in)
CAM ROCKER ARM
INSPECTION
Inspect the cam rocker arms for abnormal wear or damage.
If they are worn or damaged, replace the cam rocker arm with a
new one.
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