Final answer:
To maintain an effective drum brake system, lubricate the brake shoe contact points, adjuster threads and lever pivot, parking brake cable and levers, wheel cylinder pins, and star wheel adjuster with high-temperature brake lubricant.
Step-by-step explanation:
When lubricating a drum brake system, specific components require proper lubrication to ensure the brakes operate smoothly and effectively. These components typically include the following:
Brake shoe contact points on the backing plate
Adjuster threads
Adjuster lever pivot
Parking brake cable and levers
Wheel cylinder pins
Star wheel adjuster
It is crucial to use the correct type of lubricant for each component, such as a high-temperature brake lubricant that won't melt under the extreme heat generated by the brakes. For each of the points listed, a small amount should be applied to reduce friction and prevent seizing or sticking. Be sure to avoid getting lubricant on the friction surfaces, like the brake linings or drum, as this could impair brake function.
Drum brake lubrication is a necessary part of regular vehicle maintenance and brake system care. By using the appropriate lubricants, the lifespan of the brake components is extended, and consistent brake performance is maintained.