What is involved in checking brake adjustment?

In the context of checking brake adjustment, observing camshaft rotation and push rod travel is crucial. This process directly assesses whether the brake system is functioning properly and ensures that the brakes engage effectively. The camshaft plays a vital role in the braking mechanism, and monitoring its rotation helps verify that the brakes are aligned correctly and that the push rod is responding appropriately to the camshaft's movement.

Proper brake adjustment is key to ensuring that the brakes apply evenly and efficiently. If the push rod does not travel appropriately or if the camshaft is not rotating as designed, it can lead to improper brake function. This may result in uneven braking or decreased stopping power, which can pose serious safety risks.

Other options involve important aspects of brake system maintenance but do not specifically pertain to the adjustment process itself. Checking fluid levels in brake reservoirs ensures that the brake fluid is at the right amount for effective braking but does not directly relate to the adjustment of the brakes. Measuring brake pad thickness is about assessing wear and determining if replacement is necessary rather than adjusting the system. Cleaning brake components is essential for maintenance but doesn't directly influence the adjustment process.