Abstract: A replaceable track pad for use on a track chain of a crawler-type tracked machine reduces damage to a travel surface while providing traction and support to the tracked machine. The replaceable track pad includes a tread supported by a backing plate. The replaceable track pad may be mounted to a track link on a track chain using a mounting plate, forming a track pad mounting assembly. The mounting plate includes a substantially flat mounting surface. A worn or damaged track pad may be removed from the track chain without removing the mounting plate. The worn track pad can be refurbished by removing the worn tread material from the backing plate and attaching a new tread to the backing plate.

Abstract: A traveling construction apparatus includes a flame having first and second ground engaging traveling gears connected to the frame and spaced apart in a direction of travel. A traveling gear height adjuster is connected between the frame and the first traveling gear. A plurality of height sensors are provided for measuring a height above the ground without engaging the ground. A height controller system is provided for actuating the traveling gear height adjuster in response to input signals from the sensors. A floating boom is connected to the frame and has the sensors mounted on the boom. The boom displaces each of the sensors a substantially equal distance relative to the ground in response to an extension or contraction of the traveling gear height adjuster.