Caterpillar Performance Handbook, January 2017, SEBD0351-47

Sustainability Features

Harvesting Track Harvesters

Sustainability: ● Major structures and components are built to be rebuilt, reducing waste and replacement costs. ● ACERT™ Technology reduces engine emissions at point of combustion with less moving parts for lower operating costs. 501 HD —Track Harvester Features: ● Cat ® C6.6 ACERT Technology provides excellent fuel economy and the engines meet U.S. EPA Tier 3/ EU Stage IIIA/Japan 2006 (Tier 3) equivalent emis- sion standards. Flex engines are available for HRC regions. ● Optional 8.2 m (27 ft) telescopic boom provides addi- tional reach. ● Unique front entry cab allows for easy entry and exit. ● Tilt cab provides easy service. ● Proven x-design carbody and large track system pro- vide strength and durability. ● Large heavy-duty swing bearing and swing torque enhance productivity. ● Exceptional operator visibility . ● IQAN computer based control system provides precise control of machine and attachment functions.

521B/522B — ZeroTail SwingTrack Harvester Features:

● Cat C9 ACERT Tier 3/Stage IIIA/Japan 2006 (Tier 3) equivalent high torque engine provides excellent power, fuel economy, serviceability and durability. ● The most robust tilt mechanism in the industry, the tilting model (522B) has a patented 3-cylinder tilt mechanism with simultaneous tilting forward and side-to-side. ● Proven rugged undercarriage designed for the tough- est harvesting conditions ranging from wet bottom- lands to steep rocky slopes. ● Hydraulically actuated clam-shell service door pro- vides full access and reduces maintenance down time. ● Comfortable, purpose built forestry cab with heavy duty guarding meets FOPS/ROPS/OPS or OR/OSHA requirements. ● Flexaire fan (standard) allows the cooling fan to purge debris from the radiator area minimizing cooling sys- tem maintenance. ● Hydraulic system is easily adaptable to both harvest- ing and directional felling heads. ● IQAN display allows the operator to continuously monitor the machine and get early warning for poten- tial problems. ● Ergonomically located pedals with side-by-side foot rests provide maximum operator comfort when the machine is traveling. ● Serviceability has been improved with vertical mounted main hydraulic control valves and increased hood enclosure area. A larger standard fuel tank allows more run time between re-fueling stops.

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