Navistar INTERNATIONAL DT 466 - Torque Procedure for Torque-To-Yield Main Bearing Bolts

CRANKCASE, CRANKSHAFT, AND CAMSHAFT 271
Torque Procedure for Torque-to-Yield Main
Bearing Bolts
1
6
5
2
4
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
H06083
# 7
Main
Cap
Figure 395 Recommended main bearing bolt torque sequence
1. Torque new bolts for main bearing caps 1
through 7.
a. Tighten each main bearing bolt to 136 N·m
(100 lbf·ft) using the recommended torque
sequence.
Figure 396 Checking crankshaft end play
Check crankshaft end play using a dial
indicator as follows:
1. Mount the dial indicator onto crankcase
with indicator tip on crankcase flange
face.
2. Lightly pry the crankshaft forward and
zero indicator.
3. Pry crankshaft rearward and record dial
indicator reading. Repeat to ensure an
accurate reading.
4. If end play exceeds specifications,
replace thrust bearing and recheck
crankshaft end play. If end play is less
than specified, loosen the thrust bearing
cap, reposition, torque and check end
play again.
b. Tighten each main bearing bolt to 177 N·m
(130 lbf·ft) using the recommended torque
sequence.
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.