What should you do when inspecting wheel cylinders during a brake inspection?

When inspecting wheel cylinders during a brake inspection, looking for signs of leakage is crucial. This is because wheel cylinders play an essential role in the braking system by converting hydraulic pressure from the brake fluid into mechanical force, which pushes the brake shoes against the drums. If there are signs of leakage, such as fluid escaping from the wheel cylinder, it can lead to reduced braking efficiency and ultimately compromise vehicle safety. Checking for leaks ensures that the braking system is functioning correctly and that the vehicle can stop safely.

Other aspects of inspection, such as removing the dust seal or checking fluid levels, are part of a broader inspection process but are not as critical as identifying leaks. Verifying the size of the wheel cylinder is generally not necessary during routine inspections unless there is an issue with braking performance that prompts a more in-depth evaluation. Thus, focusing on the presence of any leaks is a fundamental practice in confirming that the braking system is in optimal working condition.