HOSE-RETURN 1472273 - Caterpillar

Illustration 3 g00534152
Kickback ski switchThe kickback ski switch is an input to the ECM. The kickback ski switch is mounted on the kickback ski which is located on the right side of the machine in front of the box for the rotor. While the machine is milling, this switch is used to detect a rearward movement. If rearward movement is detected, the ECM will stop the rotor and propulsion of the machine. The kickback ski must be properly set to perform the following:
Detect a kickback event.
Engage the rotor for milling.The kickback ski switch is an electronic proximity switch. This switch detects the presence or absence of metal. When a metal object is within 5 mm (0.19 inch) of the flat detection face of the switch, the switch is ON. A red LED indicator that is located in the switch will be turned ON. In this state, contact 6 on the ECM is grounded and contact 5 is open. When no metal object is within 15 mm (0.59 inch) of the flat detection face of the switch, the switch is OFF. The red LED is OFF. In the OFF state, contact 5 on the ECM is grounded and contact 6 is open. At the kickback ski switch connector, perform the following:
Connect the contact 3 (wire 119-PK) to the battery and the contact 1 (wire 229-BK) to the ground.Note: The ECM detects