Title: Check shaft balance and phasing; measure shaft runout; measure and adjust driveline angles.
Course: Automotive Technology III (20104-III) > Section: Manual Drive Train and Axles: Drive Shaft and Half Shaft, Universal and Constant-Velocity (CV) Joint Diagnosis and Repair (Front, Rear, All-Wheel, and Four-Wheel Drive)

Procedures should include using a dial indicator to check

- driveshaft and yoke runout
- driveline angles
- proper alignment of joints.

ASE Education Foundation
2017 Automobile Service Technology (AST) Level
III. Manual Drive Train and Axles
D. Drive Shaft and Half Shaft, Universal and Constant-Velocity (CV) Joint Diagnosis
and Repair (Front, Rear, All-wheel, and Four-wheel Drive)
Task 5

Process/Skill Questions:

- How does a technician properly phase a two-piece drive shaft?
- How are driveline angles adjusted?
- Why are phasing and driveline angles important?