Driveline Mix Lecture One Worksheet PDF

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Lecture homework and worksheet...

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Drivelines Mix Lecture #1 Notes/Worksheet Follow this worksheet along with the Mix Lecture. Check the confusion box if you still have questions about the topic. We can discuss these topics further in class. Submit this worksheet by the due date listed in D2L. 1 2 3 4

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Questions: Conf Box What parts make up the driveline? Slip yoke, front universal joint, rear universal joint, shaft, center support bearing Why is there a coating on u-joints found in aluminum driveshafts? To prevent galvanic corrosion What are the most common methods for attaching a u-joint to a yoke assembly? Strap or u-bolt design If the spicer type clip doesn’t fit in the yoke because there is not enough of a snap ring groove, what could be wrong? The yoke ears could be bent in On driveshafts that use nylon injection, what type of u-joints would be used as replacements? Spicer or c-clip? C-clip groove What different methods are used to allow for driveline length changes while driving down the road and going over bumps? Slip yoke incorporated into driveshaft, or slip yoke on yoke assembly What could happen if, while driving, the clip falls out (or it’s not installed) on a ujoint? Will make it come apart Can just a strap or a u-bolt be adequate in retaining the u-joint to the yoke? no What is the purpose of a 2- or 3-piece driveshaft? Third or fourth u-joint is added, reduces vibration On a two/three piece driveshaft, what is the purpose of the center bearing? What kind of failures could occur with a center bearing? Stiffens the whole structure and supports middle shaft, less vibration What angle does the front driveshaft operate at in relation to the transmission’s output shaft? No angle What are some failures found in u-joints? Loses lubricant, wear themselves into the trunnions, backlash in drivetrain What does “brinneling” look like? Rows of indented lines What is the purpose of measuring driveshaft runout? If there is vibrations, how far out of round, How would you measure driveshaft runout? Dial indicator or chalk Now much looseness is acceptable when checking u-joints? None What problems could a bad u-joint cause regarding the transmission or transfer case? Could develop a crack in the transmission and cause a leak

18 Why is checking the u-joints with the driveshaft out better than checking them with the driveshaft installed? Because you can hold both side of driveshaft and manipulate it better 19 What are some concerns regarding u-joint removal/installation? Never clamp tube in a vise, never strike the tube or yoke with hammer 20 What are some disadvantages of using a u-joint tool (big c-clamp)? Can bend the yoke ears in if u-joints are old and or rusty 21 What are some disadvantages of the press/hammer method? Good chance of damaging the u-joint, accidentally hitting tube or snap ring 22 Why is popping the spicer clips out with a hammer and screwdriver better than using a pair of needle nose plyers? Can break the ends of the splicer clip 23 Why do you mark the location of the yoke/flange and driveshaft before disassembling the joint assembly? so when you reassemble, it is in correct alignment 24 After installing the u-joint, how do you seat the bearings to prevent binding in the joint? You tap it with the hammer to take away pressure from trunnion 25 Any questions pertaining this mix?...