Copyright Goodheart-Willcox Co., Inc. Heavy Equipment Power Trains and Systems 840 25. Which manufacturer incorporates the use of a steering brake that is actuated by a turn mode switch on their largest differential-steered dozer, the D275AX-5? A. Case. B. Caterpillar. C. John Deere. D. Komatsu. 26. All of the following machines and systems can be considered to use some type of hydrostatic steering, except: A. traditional combine harvester. B. differential-steered tractor. C. dual-path hydrostatic drive. D. two-speed planetary steering gear. 27. All of the following manufacturers have manufactured a two-speed planetary steering system, except: A. Deere. B. Dresser. C. Dressta. D. International Harvester. 28. The Case 1150B-E and 1450B track-type tractors use what type of steering system? A. Differential steer. B. Dual-path hydrostatic drive. C. Independent-geared track steering. D. Two-speed planetary steering system. 29. Caterpillar D7E dozers are equipped with all of the following components as part of the electric drive system, except: A. an AC generator. B. two AC motors. C. a power inverter. D. a torque converter. 30. All of the following manufacturers produce a four rubber track tractor, except: A. Case IH Agriculture. B. Case Construction. C. John Deere Agriculture. D. John Deere Construction. 20. On a differential-steered track-type tractor, when the tractor is driving straight ahead, the differential is receiving input from _____. A. the hydraulic motor B. the transmission C. Both A and B. D. Neither A nor B. 21. On a differential-steered track-type tractor, when the tractor is driving and steering simultaneously, the differential is receiving input from _____. A. the hydraulic motor B. the transmission C. Both A and B. D. Neither A nor B. 22. Differential-steered Caterpillar dozers and AGCO differential-steered twin track tractors have what commonality in the steering differential? A. Three sun gears connected together through a single shaft. B. Two built-in final drives. C. One planetary carrier that drives three individual final drives. D. Three bevel gears connected together through two shafts. 23. In a differential-steered Case dozer, the _____ are used to deliver power from the hydraulic steering motor to the steering differential. A. bevel gear shafts B. planetary carriers C. steering clutches D. sun gear shafts 24. A John Deere twin rubber track differential-steered tractor has the transmission driving the pinion and ring bevel gear set, which drives the bevel gear shaft that powers the _____. A. sun gears B. ring gears C. planetary carriers D. hydraulic motor