Removal; Valve Cover - Navistar INTERNATIONAL DT 466 Service Manual

120

Removal

GOVERNMENT REGULATION: Engine
fluids (oil, fuel, and coolant) may be a hazard
to human health and the environment.
Handle all fluids and other contaminated
materials (e.g. filters, rags) in accordance
with applicable regulations.
or dispose of engine fluids, filters, and
other contaminated materials according to
applicable regulations.
WARNING: To prevent personal injury or
death, read all safety instructions in the "Safety
Information" section of this manual.
WARNING: To prevent personal injury or
death, shift transmission to park or neutral, set
parking brake, and block wheels before doing
diagnostic or service procedures.
WARNING: To prevent personal injury or
death, allow engine to cool before working with
components.
WARNING: To prevent personal injury or
death, disconnect ground (-) cable from battery
before doing service or diagnostic procedures.
WARNING: To prevent personal injury or
death, wear safety glasses with side shields.
Limit compressed air pressure to 207 kPa (30 psi).
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
CYLINDER HEAD AND VALVE TRAIN
Recycle
EGES-265-2
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.
WARNING: To prevent personal injury or
death, do not let engine fluids stay on your skin.
Clean skin and nails using hand cleaner and wash
with soap and water. Wash or discard clothing
and rags contaminated with engine fluids.
CAUTION: To prevent engine damage, do not reuse
cylinder head bolts; install new bolts.
NOTE: For information regarding the removal or
installation of adjacent components, refer to the
following service procedures located in other sections
of this manual:
• VGT turbocharger
• Intake and exhaust manifolds
• EGR system components
• High-pressure oil manifold or Diamond Logic®
Engine Brake (if equipped)
• Fuel filter assembly
• Fuel injector assembly
• Crankcase breather assembly
• Coolant outlet tube assembly
• Water supply housing

Valve Cover

1. If cylinder head is to be removed in chassis, drain
coolant to a level below the head gasket joint.
2. Disconnect crankcase ventilation and drain tubing
from breather assembly. The breather assembly
can remain attached to the valve cover during
the valve cover removal (Crankcase Ventilation
System, page253 ).