Universal Joints - Part 4: U-joint and Driveline Inspection

Weber State University (WSU) - Automotive Technology Department - Transmission Lab. This is the fourth in a series of videos on universal joints, constant velocity joints, and driveshafts. In this episode, we learn how to inspect drivelines and universal joints.

Timeline:
0:00 Start
0:09 Introduction
0:30 Definitions
1:40 Reasons to diagnose a driveline problem
2:11 Tubing inspection
3:24 Slip-joint inspection
4:00 Center Support bearing
4:18 Yokes and Ears
5:04 Slip-In-Tube driveshaft inspection
7:00 Balance weights
8:25 Companion Flange inspections
10:00 Flange Yoke inspections
11:40 Universal joint inspections
14:25 Universal joint looseness or end play
16:25 Greaseable universal joint inspections
19:09 Sealed universal joint inspections
21:22 Snap ring inspections
23:21 Galvanic corrosion prevention and coated snap rings
25:00 Additional snap ring inspections
26:24 Universal joint axial endplay and radial endplay measurements
32:42 Propeller shafts versus driveshafts
34:05 Slip yoke at transmission/transfer case output shaft inspections


This video series helps partially cover the following NATEF Master Tasks:
3.D.1. Diagnose constant-velocity (CV) joint noise and vibration concerns; determine necessary action.
3.D.2. Diagnose universal joint noise and vibration concerns; perform necessary action.
3.D.4. Inspect, service, and replace shafts, yokes, boots, and universal/CV joints.
3.D.5. Check shaft balance and phasing; measure shaft runout; measure and adjust driveline angles.
3.E.4. Measure drive axle flange runout and shaft end play; determine necessary action.

Questions for Teachers:
1. What is the difference between a driveshaft and a driveline?
2. What two reasons are listed in the video for inspecting a driveline?
3. For what abnormal conditions should the driveshaft tube be inspected?
4. For what abnormal conditions should the slip-joint be inspected?
5. For what abnormal conditions should the yokes and ears be inspected?
6. For what abnormal conditions should the balance weights be inspected?
7. For what abnormal conditions should the universal joints be inspected?
8. For what abnormal conditions should the universal joint snap rings be inspected?
9. For what abnormal conditions should greaseable universal joints be inspected?
10. What is galvanic corrosion?
11. What can cause galvanic corrosion on a driveshaft?
12. Is it possible to have a bad universal joint if it has no Freeplay when felt by hand?
13. What is the difference between a propeller shaft and a driveshaft?
14. For what abnormal conditions should the slip-yoke at the transmission be inspected?

Subscribe to the weberauto Youtube channel for more great videos.    / weberauto  

Visit the following website for information on how to attend our school and obtain an associate's degree or bachelor's degree in Automotive technology.

http://www.weber.edu/automotive

This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kel...

Donate to the Department of Automotive Technology at Weber State University here: http://advancement.weber.edu/Automotive