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ROCK EJECTORS
Rock Ejectors are placed between the rear dual wheels
to keep rocks or other material from lodging between
the tires. Failure to maintain the Rock Ejectors could
allow debris to build up between the dual wheels and
cause damage to the tires.
Inspection
1. The ejectors must be positioned on the center line
between the rear tires within 0.25 in. (6.35 mm).
2. With the truck parked on a level surface, the arm
structure should be approximately 4.33 in. (110
mm) from the wheel spacer ring (3). Refer to
Figure 3-7.
NOTE: With Rock Ejector Arm (1, Figure 3-8)
hanging vertical as shown in Figure 3-7, there
must be NO GAP at Stop Block (3, Figure 3-8).
3. If the arm (1) becomes bent, it must be removed
and straightened.
4. The wear plates (2) must be replaced if severely
worn.
5. Inspect the mounting brackets (4, Figure 3-8), pins
(2) and stops (3) at each shift change for wear
and/or damage, and repair as necessary.
B03013 03/01
FIGURE 3-7. ROCK EJECTOR INSTALLATION
1. Rock Ejector Arm
2. Wear Plate
FIGURE 3-8. ROCK EJECTOR MOUNTING
BRACKET (Detail View)
1. Rock Ejector Arm
2. Pin
Dump Body
3. Rear Wheel Spacer
Ring
91185
3. Stop Block
4. Mounting Bracket
B3-5
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