POWER CYLINDERS 241
Torque Procedure for Connecting Rods with M12
Bolts
CAUTION: To prevent engine damage, follow the
connecting rod torque procedure for the specific
connecting rods in the engine.
Figure 351 Connecting rod cap with M12
connecting rod cap bolts (protrusion points to
front of engine)
NOTE: If doing a bearing fit procedure, (Bearing
Fitting Procedures and Bearing Running Clearance,
page225) tighten new M12 connecting rod cap bolts
to 109 N·m (80 lbf·ft).
For final assembly, tighten new M12 connecting rod
cap bolts to 163 N·m (120 lbf·ft).
Torque-to-yield Procedure for New Connecting
Rod with M 11 Bolts
CAUTION: To prevent engine damage, follow the
connecting rod torque procedure for the specific
connecting rods in the engine.
Figure 352 Connecting rod cap with M11
connecting rod cap bolts (protrusion points to
front of engine)
NOTE: If doing a bearing fit procedure (Bearing Fitting
Procedures and Bearing Running Clearance, page
225), do not torque-to-yield connecting rod cap bolts.
Tighten new M11 connecting rod cap bolts to 109 N·m
(80 lbf·ft)
1. For final assembly, tighten new M11 connecting
rod cap bolts to 41 N·m (30 lbf·ft).
Figure 353 Torque-to-yield marks for M11 bolts
1. Connecting rod bolt with permanent marker spot
(before torque-to-yield)
2. Connecting rod bolt with permanent marker spot
(after torque-to-yield)
3. Permanent marker spot on connecting rod cap
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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