ENGINE 3-47
CONROD/CRANKSHAFT
CONROD SMALL END I.D.
• Using a small bore gauge, measure the inside diameter of the
conrod small end.
[ 09900-20602: Dial gauge (1/1000 mm, 1 mm)
09900-22401: Small bore gauge (10 – 18 mm)
Conrod small end I.D.:
Service Limit: 16.040 mm (0.6315 in)
• If the inside diameter of the conrod small end exceeds the
limit, replace the conrod.
CONROD BIG END SIDE CLEARANCE
• Inspect the conrod side clearance by using a thickness
gauge.
• If the clearance exceeds the limit, remove the conrod and
inspect the conrod big end width and the crank pin width.
• If the width exceed the limit, replace conrod or crankshaft.
Conrod big end side clearance:
Service Limit: 0.30 mm (0.012 in)
[ 09900-20803: Thickness gauge
Conrod big end width:
Standard: 19.95 – 20.00 mm (0.7854 – 0.7874 in)
[ 09900-20205: Micrometer (0 – 25 mm)
Crank pin width:
Standard: 20.10 – 20.15 mm (0.7913 – 0.7933 in)
[ 09900-20205: Micrometer (0 – 25 mm)
09900-20605: Dial caliper (10 – 34 mm)
09900-20803: Thickness gauge
CONROD-CRANK PIN BEARING INSPECTION
• Inspect the bearing surfaces for any sign of fusion, pitting,
burn, or flaws. If any, replace them with a specified set of
bearings.
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