Transmissions and Drive Trains

  • John B. Liljedahl
  • Paul K. Turnquist
  • David W. Smith
  • Makoto Hoki


The tractor drive train has three functions. It transmits power from the engine to the wheels, pto, hydraulic pump, and other auxiliary drives; changes the torque and speed into the torque and speed required by the particular drive; and provides means for operator control with disconnect clutches and speed ratio selection for the wheel and pto drives. The power transmitted by the drive train is approximately constant, changing only by the amount of the small gear and bearing friction and windage losses that occur.


Gear Tooth Planetary Gear Rear Wheel Bevel Gear Continuously Variable Transmission 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Suggested Reading

  1. Renius, K. T. “New Developments in Tractor Transmissions.” Grundlagen der Landtechnik, vol. 34, no. 3, 1984, pp. 132–142.Google Scholar

Copyright information

© Van Nostrand Reinhold 1989

Authors and Affiliations

  • John B. Liljedahl
    • 1
  • Paul K. Turnquist
    • 2
  • David W. Smith
    • 3
  • Makoto Hoki
    • 4
  1. 1.Agricultural Engineering DepartmentPurdue UniversityUSA
  2. 2.Agricultural Engineering DepartmentAuburn UniversityUSA
  3. 3.Technical Center Deere & CompanyUSA
  4. 4.Department of Agricultural MachineryMie UniversityTsuJapan

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