CRANKCASE, CRANKSHAFT, AND CAMSHAFT 257
3. Lift up both bolts until about half the threads are
exposed. Use both bolts to rock main bearing cap
free from crankcase.
4. Discard all of the removed main bearing bolts.
These are not reusable due to the permanent
stretch they received from “torque-to-yield”.
Figure 366 Removing the crankshaft assembly
5. Placeanappropriatelysizedslingaroundthe
middle of the crankshaft and attach it to a hoist or
crane. Lift crankshaft out of crankcase and place
on workbench.
6. Visually inspect the crankshaft gears for chipping
or wear. Replace as required.
7. Place a chisel between the gear teeth and strike
the chisel with a hammer to split the gear.
Figure 367 Removing oil pump drive spline
8. Remove the oil pump drive first to access the
crankshaft gear.
9. Be careful not to damage the crankshaft during
gear removal.
Figure 368 Removing the number seven upper
thrust bearing
10. Remove upper main bearing shells by pushing
them out of main bearing saddle with your thumbs.
Mark the upper shells with bearing number and
orientation. Set aside each upper bearing shell
with the lower shells until a proper inspection can
be done.
Cam Gear from Camshaft
NOTE: If removing the whole camshaft assembly, skip
to next procedure.
1. Install gear puller making sure claws are positively
engaged with cam gear and the threaded shaft is
aligned with camshaft.
EGES-265-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.
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