Labrie ALLEY -GATOR RIGHT-HAND, Maintenance Manual

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Maintenance 53
Arm Mid-Height Limit Switches (2)
Both arm mid-height limit switches have two functions:
The lower switch allows the gripper to open when the arm is lower than the mid-height sensor and
activates the gripper automatic close function when the arm is higher than the sensor.
The higher switch is used as a trigger for the camera auto-switching function when there are cameras
on the right-hand wall and inside the hopper. It also provides a means of cushioning the grabber as it
nears the top end of its stroke. No shock should occur when the grabber gets there.
Figure 3-23 Arm mid-height limit switches
The arm mid-height limit switches are located on front side of the arm.
These limit switches do not really need any adjustment other than the target itself. If they ever need
adjustment, adjust the target so that the limit switch levers come in contact with the target when the
arm rises. The length of the roller levers can also be adjusted for more precision.
Arm Stowed Limit Switches (2)
The arm stowed limit switches trigger the arm not parked warning message on the MDM display
screen when the operator extends the arm or closes the gripper. If these limit switches are misaligned,
the warning message on the MDM display screen may continue to appear even if the gripper is fully
open and the arm fully retracted. The arm stowed limit switches also activate an audible alarm when
the arm is out and the vehicle speed is greater than about 3
mph.