Answer :
Final answer:
The correct answer is option a) Dial indicator. The radial and axial play in ball joints is checked using a dial indicator, which provides precise readings to determine if the joints meet the manufacturer's specifications for safe vehicle operation.
Explanation:
The correct tool for checking radial and axial play in ball joints is a dial indicator. A micrometer, vernier caliper, and feeler gauge are not suitable for this purpose. The dial indicator allows for precise measurements of the ball joint movement, which reflects the amount of wear or damage to the joint. If the movement exceeds the manufacturer's specifications, the ball joint may require replacement to ensure vehicle safety and proper handling. The answer to the question is a) Dial indicator.
When measuring with a dial indicator, the typical solution for detecting radial movement is to set the dial to zero with the joint in a neutral position and then apply pressure to the joint in the applicable radial direction. Any deviation from zero can then be read directly from the dial. Similarly, axial play can be measured by positioning the dial indicator stem parallel to the axis of the joint and moving the joint along its axis.
