Emergency-Parking Brake System for Large Wheel Loaders and Dozers

Caterpillar Tractor Co. has introduced a new emergency-parking brake system for its line of large wheel loaders and wheel type tractors. This system includes a multidisk-spring-applied/hydraulically-released-emergency-parking brake, a hydraulic control system providing both automatic and manual application of the brake, and an audiovisual warning system for the operator.

The brake is for use on vehicles in the 60,000-140,000 lb range and is designed specifically to provide automatic application of the emergency-parking brake in the event of a loss of service brakes.