214 Lifting Arms
4. Lower and fully open the gripper.
5. Close the gripper a few inches (to release the limit switch) and lift the gripper to see if it closes
automatically.
If the gripper does not close on its way up, refer to the following section.
Adjusting the Auto-Closing System
The gripper auto-closing system is controlled by a limit switch located on the side of the arm.
Figure 10-9
Auto-closing limit switch
To adjust the auto-closing system:
1. Make sure that the vehicle is parked on safe, level ground.
2. Secure the area around the path of the arm with barrier tape or barricades.
3. Start the engine and engage the hydraulic pump.
4. Lower and fully open the gripper.
5. Raise the gripper (or the arm) until the target (flat bar) releases the limit switch. At this point, a
12-volt signal should reach the coil on the O
N/OFF valve to close the gripper.
Danger!
Do not stand directly in the path of the arm while carrying out this inspection.
Danger!
Do not stand directly in the path of the arm while carrying out these adjustments.
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