iv Timothy W. Dell is a Professor of Automotive Technology at Pittsburg State University and serves as the department’s Diesel and Heavy Equipment Coordinator. Dr. Dell received his doctoral degree in curriculum and instruction from Kansas State University, a master of science degree in technology education from Pittsburg State University, and a bachelor of science degree in automotive technology with an emphasis in diesel and heavy equipment from Pittsburg State University. He began his career working for Case IH in their Technical Service Group specializing in combine diagnostics. He has served on John Deere’s Agri- cultural National Service Training Advisory Board and has been the adviser of Pittsburg State University’s Caterpillar ThinkBIGGER four-year degree. He has taught Automotive Electricity and Electronic Systems, Fluid Power, and Off-Highway Systems. He currently teaches Automotive Automatic Transmissions, Advanced Hydraulic Systems, and Con- struction Equipment Systems. Dr. Dell has served as the automotive department chair for four years, but returned to the classroom full-time to pursue his passion for curriculum development and teaching. He is also the author of Hydraulic Systems for Mobile Equipment. About the Author Reviewers The author and publisher wish to thank the following industry and teaching professionals for their valuable input into the development of Heavy Equipment Power Trains and Systems. James Aakre North Dakota State College of Science Wahpeton, ND David Cook Illinois Central College East Peoria, IL Steven Don Montana State University-Northern Havre, MT Charles Ferguson Lincoln College of Technology Nashville, TN Donald Flewelling Central Arizona College Coolidge, AZ Ed Frederick State Technical College Linn, MO Tom Grothous University of Northwestern Ohio Lima, OH Jeff Klehr Central Lakes College Staples, MN Rene Legault British Columbia Institute of Technology Delta, BC, Canada James Mack Berks Career and Technology Center Oley, PA James Maxwell Lincoln College of Technology Nashville, TN Chauncey Pennington Pittsburg State University Pittsburg, KS Gary Shore British Columbia Institute of Technology Delta, BC, Canada Chris Thompson Alexandria Technical & Community College Alexandria, MN Gary Wenter Reedley College Reedley, CA