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 transmission to its drive wheels. Drive Train Freight Train Passenger Train Automotive Service 2. Front engine, rear wheel drive vehicles use a __________ __________ to transfer power from the transmission output shaft to the rear axle. Torque Tube Drive Shaft Axle Shaft Automotive Service 3. A drive shaft has _____________________ joints at its ends to allow for driveline flex as the rear axlemoves up and down. A FWD transaxle is equipped with half­shafts fit with either tripod or Rzeppa joints. National Global Universal Automotive Service 4. A ________ yoke is used on a drive shaft to allow length changes as the rear axle moves up & down. Split Slick Slip Automotive Service 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 tires 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. Cross & Roller Cross & Road Cross & Angry Automotive Service 8. Double cross­and­roller joints, known as ______________________ velocity universal joints, are used to reduce torque 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 transfer case, 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 coupling. AWD systems sense the need for torque and change the percentage of application front­to­rear wheels automatically. Front Wheel Rear Wheel All Wheel Automotive Service Automotive Service Automotive Service Automotive Service Automotive Service Automotive Service Automotive Service Automotive Service Automotive Service.