Brakes Chapter 1 Notes
Name:______Period______
1. Although sometimes mistakenly called ______brakes,
______brakes are brakes that are used to keep a parked vehicle from moving.
2. ______varies by the roughness of the surfaces and the materials from
which the objects are made. There is more ______between a piece of sandpaper and a block of wood than between an ice cube and a countertop.
3. ______is a liquid specially formulated to be used in hydraulic brake systems. It is used to transfer hydraulic pressure from the service brake’s master cylinder to the wheel brake mechanisms.
4. The most common types of brake fluid in use are:
DOT ______
DOT ______
DOT ______
5. DOT ____ and DOT _____ brake fluid types are polyglycol-based.
6. DOT ____ brake fluid is silicone based.
7. DOT ____ is not compatible and can not be mixed with DOT ____ or DOT ____.
8. DOT ____ brake fluid has the highest boiling point.
9. DOT ____ and DOT ____ will damage a vehicles paint. DOT ____ will not.
10. Water boils at ______
11. DOT 3 boils at ______.
12. Opened (seal broken) containers of brake fluid should not be stored for a long period
of ______because they absorb moisture.
13. As brake fluid absorbs moisture, the boiling point of the fluid is ______.
14. Brake fluid can become ______if petroleum or other products are added to the brake system. This can cause rubber parts to soften, swell, and fail.
Wet boiling point is the minimum temperature at which the brake fluid will begin to boil when the brake system contains 3% water by volume in the system.
Dry boiling point is the temperature at which that brake fluid will boil with no water present in the system.
Brake pedal fade can occur if the brake fluid becomes hot enough to boil, changing the fluid from a liquid to a gas that can be compressed.
15. When installing brake fluid, make sure that the master cylinder reservoir is clean before removing the cap. Make sure that the brake fluid is in between the
______and ______marks on the master cylinder.
16. Brake linings were once made of ______, which is a health hazard. It is no longer used for brakes on cars and light duty trucks. However, you may still find
some older cars with ______brake linings. DO NOT USE COMPRESSED AIR to blow brake dust from a brake assembly. Use an aqueous based brake cleaner or a spray solvent.