Cylinder block and crank connecting rod mechanisms
82
mm{in}
Crank pin Diameter
Standard
44.980～45.000{1.7709～1.7717}
Reduce size: 0.25{0.01}
44.730～44.750{1.7610～1.7618}
Reduce size: 0.50{0.02}
44.480～44.500{1.7512～1.7520}
4. Measure the main journal clearance in the following way.
(1) Wipe out the oil on/in the crankshaft journal and bearing seat.
(2) Cut the clearance gauge of plastic line so that it can match with the bearing width and
then place it on the top of journal and perpendicular to its axis.
(3) Fit the main bearing cap (See——this section, Installation of Main Bearing Cap).
(4) Remove the main bearing cap bolt and slowly take out the main bearing cap
(See——this section, Installation of Main Bearing Cap).
(5) Measure, with a clearance gauge of plastic line, the widest point of extruded part of
clearance gauge of plastic line, whereby the journal clearance can be achieved. If the
clearance exceeded the max. value, grind the main bearing hole and fit the bearing
suitable for the reduced size of crankshaft to meet the current clearance.
Standard clearance: 0.018～0.036mm{0.00071～0.00142in}
Max.clearance: 0.1mm {0.0039in}
mm{in}
Size of bearing Thickness of bearing
Standard
1.988～2.003{0.0783～0.0789}
Reduced size: 0.25{0.01} 2.113～2.128{0.0831～0.0837}
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