Inspection; Checking Lower Idler Gear Backlash; Checking Upper Idler Gear Backlash - Navistar INTERNATIONAL DT 466 Service Manual

Inspection

Checking Lower Idler Gear Backlash

Figure 240 Checking lower idler gear backlash
1. Lower idler gear
2. Dial indicator
1. Clamp a dial indicator onto the front cover.
2. Place the tip of the dial indicator as tangent as
possible to a gear tooth, and zero dial indicator.
3. Rock lower idler gear back and forth. Record the
reading on the dial indicator face. If the backlash
exceeds specifications, replace lower idler gear.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
FRONT COVER AND RELATED COMPONENTS
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.

Checking Upper Idler Gear Backlash

Figure 241 Checking upper idler gear backlash
1. Dial indicator
2. Upper idler gear
1. Mount a dial indicator on top of the crankcase.
2. Place the tip of the dial indicator as tangent as
possible to a gear tooth and zero dial indicator.
3. Place a screwdriver between the crankshaft and
the lower idler gear to keep the lower idler gear
from rotating.
4. Rock upper idler gear back and forth. Record
the reading on the dial indicator. If the backlash
exceeds specifications, replace upper idler gear.
EGES-265-2
177