Brake chambers are found on
- only the rear wheels.
- all air tanks.
- all the wheels. ✓
- only the front wheels.
Answer: C. all the wheels.
Brake chambers are found on all the wheels.
Why this is the answer
The handbook describes the foundation brake as the brake assembly at each wheel, and it says that assembly includes the brake chamber. It also explains how air pressure in the chamber moves the pushrod and slack adjuster to apply the foundation brakes at the wheel. That makes the chamber part of the brake setup at every wheel, not something limited to one axle or mounted on the air tanks.
Why the other answers are wrong
- A. only the rear wheels. — The handbook describes the brake chamber as part of the foundation brake assembly at each wheel, so it is not limited to the rear wheels.
- B. all air tanks. — The handbook places the brake chamber in the wheel brake assembly, not on the air tanks.
- D. only the front wheels. — The handbook describes the brake chamber as part of the foundation brake at each wheel, so it is not limited to the front wheels.
Remember it
Picture the chamber as part of the brake package at every wheel, not just one axle.