General Maintenance 65
Replacing Packer Wipers
To replace the packer wipers, do the following:
1. Proceed with the preparation of the hopper and the correct positioning of the packer (see
Preparing for Upper Wear Pad Replacement on page 56).
2. Remove the old packer wipers and replace with new ones.
3. Adjust the packer wipers on both sides of the packer (see Figure 3-59).
Packer wipers are generally made of UHMW plastic.
4. Use shims as required for proper adjustment.
Figure 3-59
Packer wipers
Follower Panel Roller Assemblies
Packer rollers need to be replaced when damaged or when showing excessive wear or flat spots. The
procedures outlined below will show you how to remove both bottom and top rollers and how to
replace them.
Replacing Bottom Roller Assemblies
NOTE: This task must be performed by 2 people.
To replace the bottom roller assemblies:
1. Fully retract the packer.
2. Lock out and tag out the vehicle (see Locking Out and Tagging Out the Vehicle on page 12).
3. Open the floating panel completely (see Lower Wear Pad on page 60).
In a co-mingle unit, mechanics must (1) take the chute out of the hopper (see Accessing the
Packer - Co-Mingle Units on page 38), (2) remove all 4 bolts that secure the panel to the hopper
posts, and (3) open the floating panel by pulling the panel handle (see Figure 3-58).
4. Remove the left-hand side bottom roller and replace it:
4 a. Using a 5 ⁄ 16-inch Allen wrench and a 3 ⁄ 4-inch box, remove all 4 bolts that keep the roller in
place (see Figure 3-60).
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