Michigan State Brakes Certification Practice Exam

The correct sequence to bleed brake lines on most rear-wheel drive vehicles is based on the hydraulic system's layout and ensuring any air trapped in the lines is removed effectively. Starting with the rear right (RR) brake first allows for the release of any air bubbles that may be present in the longest brake line, which often runs from the master cylinder to the rear. Following this with the rear left (LR) continues the process of alleviating air from the rear section of the braking system.

Next, moving to the front right (RF) and finishing with the front left (LF) ensures that the air is effectively purged from the front brakes as well. This sequence is crucial because it prevents air from moving to the rear brakes, which could occur if you started with the front brakes.

Each brake should be bled from the furthest point from the master cylinder to the nearest. In rear-wheel drive vehicles, this sequence optimizes the removal of air trapped in the system and helps maintain even braking efficiency.