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SECTION 6 - GENERAL MECHANICAL OVERHAUL
CURSOR SERIES
Base - 03/2015 Print P4D32C006 E
Measuring crankpins
Figure 77
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Before grinding the pins, using a micrometer (1), measure the
main journals of the shaft (2) and decide, on the basis of the
undersizing of the half-bearings, the final diameter to which the
pins are to be ground.
NOTE For a more accurate reading, take different mea-
surements on more than one point of the shaft
and calculate the average value.
Figure 78
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Y=Crankpin fitting detail
During the grinding operation, pay attention to the values of
the crankpins shown in Y.
NOTE All main journals and crankpins must also be
ground to the same undersizing class, in order
to avoid any alteration to shaft balance.
Figure 79
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Write down the measurements of the main journals and crankpins of the crankshaft in the table.
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