Leach 2R-III, Maintenance Manual

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116 Service & Repair
Example
The upper right roller is removing paint to the point of scuffing the track web. Also, the carrier shifts
to the left about 5/8” while being retracted. To adjust, the upper right roller should have 2-3 shims
removed. This will allow the carrier to move to the right at the top, aligning the carrier panel with
carrier cylinders.
The rollers should be shimmed to accommodate for the narrowest dimension between the track
channels. For instance, the top rollers should be checked for movement at the top of the carrier travel,
while the bottom rollers should be checked for movement at the bottom of the track channel.
Normally, the rollers are not shimmed to account for movement at the center of the tracks.
Some movement of the carrier in a side to side motion is common, especially while the carrier is in
motion. However, any wear to the web portion of the track should be considered unacceptable.
N
OTE
:
When adding or removing shims, allow for each shim to accommodate for 1/8” of carrier
movement. Do not attempt to shim more than one (1) roller at a time. After shimming rollers
to acceptable limits, lubricate the rollers and operate the carrier and packer through at least
five (5) complete cycles, with the engine speed up system activated, to insure proper
adjustment of the carrier rollers has been achieved.
N
OTE
:
This procedure may have to be repeated multiple times to achieve proper adjustment of the
rollers. Again, remember that the rollers are better left a little loose than too tight.
Patience and experience are the best tools to allow for proper adjustment of the rollers.
Wear Shoe Replacement
If your truck is equipped with the optional wear shoes (see Figure 8-1) instead of rollers to guide the
downward and upward movements of the carrier panel inside the hopper, the following procedure
must be applied when replacing those wear shoes.
Figure 8-1 Wear shoe