ENGINE 3-37
CONROD/CRANKSHAFT
CONROD SMALL END I.D.
Using a small bore gauge, measure the conrod small end inside
diameter.
! Conrod small end I.D.
Service Limit: 20.040 mm (0.7890 in)
" 09900-20602: Dial gauge (1/1000 mm, 1 mm)
09900-22403: Small bore gauge (18 – 35 mm)
If the conrod small end inside diameter exceeds the above men-
tioned limit, replace the conrod.
CONROD BIG END SIDE CLEARANCE
Check the conrod thrust clearance by using a thickness gauge. If
the clearance exceeds 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: 21.95 – 22.00 mm (0.864 – 0.866 in)
! Crank pin width
Standard: 22.10 – 22.15 mm (0.870 – 0 872 in)
" 09900-20205: Micrometer (0 – 25 mm)
09900-20605: Dial calipers (10 – 34 mm)
CONROD-CRANK PIN BEARING SELECTION
• Loosen the bearing cap nuts and tap the bolt end lightly with
plastic hammer to remove the bearing cap.
• Remove the rods and mark them to identify the cylinder posi-
tion.
• Inspect the bearing surfaces for any sign of fusion, pitting, burn,
or flaws. If any, replace them with a specified set of bearings.
NOTE:
Never try to remove or loosen the conrod cap bolts due to their
possible loosening in the rod. Once displaced, the bearing cap
will not be fitted properly.
To Next Page
Loading...
