A growler is used to test which starter component?

A growler is an effective tool used to test the armature of a starter motor. It works by creating a magnetic field that induces a voltage in the windings of the armature. When an armature is placed on the growler, any shorted turns or damaged windings can be identified through the presence of weak or nonexistent readings. This diagnostic capability is essential because armature faults are common issues that can lead to starter failures.

Testing the armature with a growler allows technicians to ensure that it is functioning properly before reinstallation or replacement in a starter system. Identifying issues at this stage helps maintain the reliability of the entire starting system in a vehicle, preventing potential breakdowns or further damage. Understanding how to use a growler is essential for anyone involved in automotive repair, as it provides a straightforward method to assess this critical component.