Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Anti-Lock Brake System: Description
The Delco Moraine Anti-Lock Brake System-III is designed to prevent wheel lockup during heavy braking. This provides improved driver control by reducing the distance required to stop vehicle.
Major component parts of system include the following: anti-lock brake controller, 4 wheel-speed sensors, 2 dash-mounted warning lights, front and rear enable relays and Powermaster-III booster/master cylinder assembly. The Powermaster-III, known as a hydraulic unit on other models, also houses hydraulic accumulator, electric pump motor, solenoids and pressure switch. See Fig 1.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.