Tension spring for Manitowoc 600E

The tension spring, part number 953005, functions as a mechanical component within the anti-two-block (ATB) system of the Manitowoc 600E crane. This system acts as a safety mechanism to prevent the load block or hook from contacting the boom tip, a condition known as two-blocking. The spring provides the necessary tension to maintain the sensor or activation mechanism in its required position and returns it to a resting state after operation. By ensuring the sensor or limit switch remains correctly positioned, the spring allows the system to accurately detect the proximity of the load block to the boom tip and trigger the appropriate alarms or stop the hoist movement.

This component is specifically engineered for fitment on the Manitowoc 600E model. Proper tension in this spring is required for the consistent operation of the ATB sensor assembly, which monitors the clearance between the crane hook and the boom head. Tension springs in these systems are used to provide a restorative force that keeps switch linkages or sensor arms engaged, ensuring that the safety system remains responsive during crane operations.