Parking brake valve for Terex ATT400-3

The parking brake valve, identified by part number K-02378-29, serves as a control component within the pneumatic or hydraulic braking system of heavy machinery. It regulates the flow of pressure to the brake actuators, allowing the operator to engage or disengage the parking brake system. By managing this pressure, the valve ensures the crane remains securely held in place when parked, preventing unintended movement on job sites or uneven terrain.

This component is compatible with the Terex ATT400-3 all-terrain crane. It integrates directly into the crane's existing braking architecture to provide reliable control over the machine's state of motion. Proper operation of this valve is necessary for maintaining the safety of the equipment and the surrounding work area during stationary periods.

Parking brake valves function by directing fluid or air to the brake calipers or drums to hold the wheels or tracks in a locked position. When the operator triggers the parking brake, the valve shifts to allow pressure to build in the actuators, forcing the brake pads or shoes against the braking surface. Releasing the brake requires the valve to vent or redirect this pressure, allowing the brakes to retract.