DL06K Interim Tire-4 Diesel Engine Disassembly and Reassembly of Major Components
81
3.2.6. Crankshaft .
1) Inspection of crankshaft
a) Defect check
z Check the scratch or crack of the crankshaft journal and crank pin with naked
eyes.
z Check crack of the crankshaft through the magnetic particle inspection test and
crack detection by penetration of penetrant (color check). If any crack is found,
replace the crankshaft.
b) Wear measuring
z With an outside micrometer measure
the diameter of the crankshaft journals
and pins in the directions as shown,
and compare the measured values to
determine the amount of wear.
z If the amount of wear is beyond the
limit, have the crankshaft ground and
install undersize bearings.
z However, if the amount of wear is
within the limit, you can correct the
wear using an oil stone or oiled
grinding paper of fine grain size. (Be
sure to use grinding paper which has
been immersed in oil.)
(mm)
Standard Limit
Journal
diameter
79.905 ~
79.925
78.905
Pin
diameter
68.924 ~
68.944
67.924
EH6OM026
A
A
B
B
B
B
EH6OM033
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