TM 5-2420-232-10
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FRONT BUCKET CONTROLS
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The front bucket s main functions are operated from the control lever (Figure 65, Item 1). Pressing the transmission creep
pushbutton (Figure 65, Item 3) in the lever knob reduces the tractive effort and releases horsepower to the hydraulic system. A
second pushbutton (Figure 65, Item 2) in the side of the loader lever knob operates the downchange facility. This facility is
only available when 2nd gear is selected. By pressing and releasing the operating button (Figure 65, Item 2), the transmission
will downchange from 2nd gear to 1st. Pressing and releasing the button a second time will cause the transmission to upchange
from 1st gear to 2nd. To open the clamshell bucket, push the auxiliary loader control lever (Figure 65, Item 4) forward. To
close the clamshell bucket, pull the lever (Figure 65, Item 4) straight back.
For individual front movements (raise, lower, roll forward, roll back) the lever (Figure 65, Item 1) is moved in a "+" pattern.
Combined movements can be selected by moving the lever (Figure 65, Item 1) in directions between the four main ones. For
example, the bucket is raised by pulling the lever straight back, while to roll the bucket back the lever must be moved to the
left.
Another example is if you pull the lever (Figure 65, Item 1) diagonally back and left, the bucket will both rise and roll back.
The speed of bucket actions depends on how far you move the lever (Figure 65, Item 1). The further you move it, the faster the
action. The lever is spring-loaded to its central (hold) position. The bucket will stay in any position until you move it.
A decal, located on top of the control lever (Figure 65, Item 1), shows by symbols what lever movements cause which bucket
actions. The symbols, lever movements, and bucket actions are described on the following pages.
WARNING
This machine is designed for use in normal outdoor atmospheric conditions. It should not be used in
an enclosed area without adequate ventilation. Do not use the machine in a potentially explosive
atmosphere, i.e., combustible vapors, gas, or dust. Failure to follow this warning may result in
injury or death to personnel.
Front bucket operations must be conducted on firm ground with gradient and slopes not greater
than 15%. Failure to follow this warning may result in injury or death to personnel.
Ensure the correct suspension mode is selected for the operation you are carrying out. Failure to
follow this warning may result in injury or death to personnel or damage to equipment.
435-A0222
Figure 65. Front Bucket Controls
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