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Crankshaft Run-Out
1) Mount the crankshaft on a set of V-blocks.
2) Set up the dial indicator to the center of
crankshaft journal.
3) Slowly rotate the crank shaft toward egine.
Read the dial indicator (TIR) as you turn the
crankshaft.
Replace the crank shaft if the crank shaft
measured value escaped from the specified
limit.
Check the repaired crank shaft after repaired,
and replace it if found cracked it.
Main Bearing and Connecting Rod
Bearing Tension
Check to be maintained enough tension, and
set up its regular position with the finger
pressure.
Grinding of Crankshaft
Pay attention the below described in order to
reuse the regrinded crank shaft.
System of Crankshaft Regrinding
1) Grind the crank shaft journal part and pin
part.
2) Procedure "R" part of journl and pin min
R3.5±0.2 more .
Sucessively grinde when procedure 'R' part.
3) Procedure journal, pin and oil hole with R1,
and finish it with soft cotton.
4) Measure the clearance of journal and pin.
See page 68 about clearance of journal and
pin measurement.
5) Measure the crank shaft run-out.
EJM2095S
EJM2091S
EJM2096S
Standard Limit
Crankshaft Run-Out
0.05 mm
0.40 mm
Undersize Bearing 0.25 mm 0.50 mm
Journal and Surface Illumination 0.4μor less
R Part
less than 3.8
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