Removing Rocker Arm Assembly - Navistar INTERNATIONAL DT 466 Service Manual

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Figure 137 Valve cover assembly detail
1. Bolt / stud, M8 x 80 / 19 (4)
2. Extension bracket
3. Remove four valve cover bolt / studs (M8 x 80 /
19).
4. Remove six valve cover bolts (M8 x 80).
5. Lift valve cover off of cylinder head.
WARNING: To prevent personal injury or
death, disconnect the main battery negative
terminal before disconnecting or connecting
electrical components.
6. Disconnect all electrical and injector connectors at
valve cover gasket.
7. Remove valve cover gasket.

Removing Rocker Arm Assembly

1. Remove high-pressure oil rail. See (Figure 640) .
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
CYLINDER HEAD AND VALVE TRAIN
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3. Valve cover harness mounting
bracket
EGES-265-2
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.
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4. Bolt, M8 x 80 (6)
Figure 138 Removing rocker arm assembly
2. Loosen all rocker arm adjusting screws and nuts.
This will avoid possible valve train damage during
installation.
3. Loosen but do not remove 12 rocker shaft clamp
bolts.
4. Lift the rocker arm shaft assembly up and away
from the cylinder head and set aside.
NOTE: There are six nylon washers, one for
each rocker shaft support, that are for assembly
purposes. Make sure that you have these
washers for installing the rocker arm shaft.
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