170 FRONT COVER AND RELAT ED COMPONENTS
3. Remove four bolts (M8 x 25) retaining the oil pump
housing cover.
Figure 229 Oil pump housing, rotors, and oil
pump (housing) seal
1. Oil pump and rotor housing
2. Inner rotor
3. Outer rotor
4. Oil pump (housing) seal
4. Remove oil pump housing cover and discard oil
pump (housing) seal.
CAUTION: To prevent engine damage, use
permanent marker to identify internal engine
components and their orientation. Do not use paint
or temporary markers.
5. Mark inner and outer rotors with a permanent
marker, if oil pump is to be reused. Mark will
indicate rotor turning direction and orientation to
front cover.
6. Remove outer rotor.
Figure 230 Vibration damper key, washer seal,
and inner rotor
1. Vibration damper key
2. Washer seal
3. Inner rotor
CAUTION: To prevent engine damage, do not
damage or distort the crankshaft keyway groove
during vibration damper key removal.
7. Carefully tap the vibration damper key out of the
crankshaft with a hammer and chisel.
8. Remove washer seal and inner rotor from
crankshaft.
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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