174 FRONT COVER AND RELAT ED COMPONENTS
Idler Gea rs
NOTE: Before removing any gears from the gear
train, check the backlash between each gear and the
camshaft end play. See the inspection procedures
(Inspection, page177) in this section.
Figure 235 Gear train locations
1. Camshaft gear
2. Upper idler gear
3. Lower idler gear
4. Crankshaft gear
Figure 236 Removing t
he lower idler gear
Figure 237 Lower Idler Gear Socket
1. Remove M20 x 70 lower idler gear mounting bolt
using Lower Idler Gear Socket (Table 21) and a
3/4 inch drive breaker bar.
2. Remove lower idler gear.
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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