JH. Automotive Tech. 7th Edition Chapter 99 Quiz A

What is the recommended first step in the disassembly of a drum brake system?

• Removal of the brake drum

• Wetting down the brake shoes and hardware with solvent

• Removal of the return (retracting) springs

• Cleaning the backing plate

When inspecting drum brake linings, what minimum thickness is recommended before replacement?

• 0.030 inch (0.8 mm)

• 0.040 inch (1.0 mm)

• 0.050 inch (1.3 mm)

• 0.060 inch (1.5 mm)

Which of the following is not a recommended lubricant for drum brake parts?

• Lithium high-temperature brake grease

• Synthetic brake grease

• Petroleum jelly

• Silicone grease

What is the purpose of the bleeder valve on a wheel cylinder?

• To introduce hydraulic fluid into the system

• To remove (bleed) air from the hydraulic system

• To adjust the brake shoes

• To lubricate the wheel cylinder

What is the consequence of having grease on the brake lining?

• The brakes will become more efficient

• The brakes will make a squeaking noise

• The brakes may grab

• There is no consequence

What is the significance of the raised pads on the backing plate?

• They indicate where the brake shoes should be placed

• They are wear indicators for the brake shoes

• They are lubrication points to prevent squeaking

• They are mounting points for the wheel cylinder

What is the correct action if the brake drum does not fit over new brake shoes?

• Force the drum over the shoes

• Check if the parking brake cable is fully released

• Check if both shoes are contacting the anchor pin

• Both B and C are correct

What is the recommended procedure for removing a brake drum to prevent asbestos release?

• Pulling it off quickly

• Using a sealed vacuum enclosure with a HEPA filter

• Spraying with water before removal

• Both B and C are correct

What is the recommended time interval for replacing or overhauling wheel cylinders?

• Every brake job

• Every other brake job

• Based on the vehicle's mileage

• Based on the time the brake fluid has been in the system

What is the correct method for adjusting the starwheel in a drum brake?

• Turning it with a standard screwdriver

• Turning it with a brake adjusting tool

• Using a hammer to tap it into place

• It does not require adjustment