Bearing Fitting Procedure - Navistar INTERNATIONAL DT 466 Service Manual

12. Carefully remove the crankshaft and inspect the
upper bearing inserts for an even transfer of bluing
agent from the journals to the bearings.
NOTE: If voids appear in the bluing transfer,
crankcase integrity is considered questionable.
13. If the crankcase is not damaged and is free of
distortion and burrs around upper bearing insert
seats, then clean all Prussian Blue® from the
bearings and crankshaft journals.
Figure 390 Lubricating the upper main bearing
inserts
14. Lubricate the upper main bearing inserts with
clean engine oil.
Figure 391 Installing the crankshaft assembly
15. Using an appropriate lifting sling, carefully lower
the crankshaft onto the main bearings.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
CRANKCASE, CRANKSHAFT, AND CAMSHAFT
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.

Bearing Fitting Procedure

1. Install a new bearing insert into the bearing cap,
as required. The bearing surface of the bearing
caps must be free of oil. Do not lubricate the
backside of the bearing inserts. Make sure the
locking tangs on the bearing inserts are snapped
into the bearing cap notch.
Figure 392 Main bearing cap identification
stamps
2. Align each main bearing cap with its identification
stamp.
3. Check bearing clearance as follows:
a. Clean the bearing surface and the exposed
half of the crankshaft journal.
these surfaces are free of oil.
b. Install the lower inserts and bearing caps. Oil
the threads of new main bearing bolts with
clean engine oil.
c. Torque bolts in the following steps in a circular
pattern.
NOTE: This two step torque procedure to
177 N·m (130 lbf·ft), simply checks bearing
fit and will not permanently stretch the
new main bearing bolts. Do not follow the
torque-to-yield procedure until final assembly.
1. Tighten each main bearing bolt to 136
N·m (100 lbf·ft) using the recommended
torque sequence (Figure 395).
EGES-265-2
269
Make sure