218 General Maintenance
Adjusting Mid-Height Limit Switch
The mid-height limit switch is located at the base of the Helping-Hand
TM
automated arm (Figure
3-314). This limit switch is part of the gripper auto-closing system. Each time the gripper reaches a
certain height, it closes automatically in order not to hit the vehicle.
Figure 3-314
Mid-height limit switch
To adjust the mid-height limit switch:
1. Fully extend the arm.
2. If not already done, raise the gripper to 90 degrees.
3. Turn OFF the engine.
4. Proceed with the lockout/tagout procedure. Refer to “Locking Out and Tagging Out the
Vehicle” on page 14.
5. Locate the mid-height limit switch at the base of the Helping-Hand
TM
arm.
6. Loosen the two screws indicated in Figure 3-314.
7. Slide the limit switch forward or backward to achieve proper contact with the target.
8. Once done, retighten the screws.
9. Test the operation.
10. Repeat the procedure until the limit switch is properly adjusted.
NOTE: The roller located at the front end of the limit switch must be vertically positioned. In case it is
not, you will have to unscrew all 4 screws that secure the front end to the rest of the switch, and
turn the front end either clockwise or counterclockwise in order to position the roller
vertically. Then replace all 4 screws and tighten them up.
Danger!
Do not stand directly in the path of the arm while carrying out these tasks.
Screws to loosen
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