Doosan DX60R Shop Manual page 325

Inspection of Crankshaft
1. Place the crankshaft end journals (4, Figure 202) on V-
blocks.
2. Place a dial indicator (3, Figure 202) on a center main
bearing surface.
3. Rotate the crankshaft
"Crankshaft" on page -98 for specifications.
4. Use the color check method or Magnaflux to inspect the
crankshaft for cracks. Replace the crankshaft if evidence
of fractures are found.
5. Measure the outside diameter of each crankpin (2, Figure
203) and main bearing journal (1, Figure 203). See
"Crankshaft" on
measurements at several places around each bearing
surface. If not within specification, grind the journals and
install undersize bearings, or replace the crankshaft.
Engine
and observe
page -98 for specifications.
runout. See
Figure 202
Take
Figure 203
SP001693
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