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Automotive Service Modern Auto Tech Study Guide Chapter 59 Pages 1131­1143 Drive Shafts & Transfer Cases 12 Points Automotive Service 1. The term ______generally refers to all of the parts that transfer power from a vehicle’s to its drive .

Drive Train Freight Train Passenger Train Automotive Service 2. Front engine, rear drive vehicles use a ______to transfer power from the transmission output shaft to the rear .

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3. A drive shaft has ______joints at its ends to allow for driveline flex as the rear axlemoves up and down. A FWD is equipped with half­shafts fit with either tripod or Rzeppa joints.

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4. A ______yoke is used on a drive shaft to allow length changes as the rear axle moves up & down.

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5. The drive shaft or propeller shaft is usually a ______steel or aluminum tube with yokes the hold the universal joints at each end. A FWD half­shaft only spans about 1/2 the width of the vehicle.

Hollow Solid Square Automotive Service 6. The drive shaft spins ______than the wheels and and may need balance weights or a vibration damper because of its high speed. NOTE: FWD half­shafts spin slower than RDW drive shafts.

Faster Slower Exactly as Fast Automotive Service 7. Universal joints are usually of the single, ______­and­______design.

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8. Double cross­and­roller joints, known as ______velocity universal joints, are used to reduce fluctuations and torsional vibrations that develop on shafts operated at sharp angles.

Continuous Constant Common Automotive Service 9. Longer drivelines, like those used on pickup trucks, may use a two­piece drive shaft fit with a ______support bearing that is hung from the frame cross members.

Front Center Rear Automotive Service 10. The ______driveline, with the exposed drive shaft and a rear axle assembly mounted on springs, is the most common driveline in use .

Hotch Kiss Scotch Kiss Stolen Kiss Automotive Service 11. Four wheel drive vehicles use a ______to send power to both the front and rear axle assemblies. Two drive shafts run from one , one to the front & one to the rear drive axle.

Torque Case Transfer Case Crank Case Automotive Service 12. ______­ ______drive does not use a conventional transfer case. More drive torque is sent to the rear wheels on an all­wheel drive system than to the front wheels through a fluid or viscous . AWD systems sense the need for torque and change the percentage of application front­to­rear wheels automatically.

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