Clutch pack clearance should be checked with which tool?

Clutch pack clearance should be checked using a feeler gauge because this tool is specifically designed to measure small gaps and spaces between components in automotive applications. It consists of a set of thin metal blades or strips that can be inserted into the space between the clutch plates to accurately measure the clearance. This is crucial for ensuring that the clutch pack operates efficiently and provides the proper friction required for smooth engagement and disengagement.

Using a feeler gauge allows for precise measurement, which is important in automatic transmissions where the performance can be significantly affected by even minor discrepancies in clutch pack clearance. Ensuring the proper clearance helps in avoiding issues such as slippage or premature wear of the clutch components, ultimately leading to better transmission performance and longevity.