Pic. 6.1. Camry brake mechanism
The hydraulic system consists of two separate circuits (pic. 6.1). The main brake cylinder includes separate reservoirs for two circuits, in the event of a fluid leak or damage in one of the hydraulic actuators, the other remains active. A dual pressure regulator distributes hydraulic pressure between the front and rear brakes to prevent the rear wheels from locking up. The brake fluid level warning is given by a warning light activated by a sensor in the master cylinder reservoir.
Pic. 6.2. Camry parking brake: 1 - locknut; 2 - adjusting nut; 3 – the lever of a manual parking brake assy; 4 - parking brake switch; 5 – parking brake cable; 6 – the lever of a pedal parking brake assy
Parking brake (pic. 6.2) mechanically activates only the rear brakes. It is activated by lifting the lever on the center console between the front seats. The Camry has a pedal-operated parking brake option.
Master brake cylinder
The master brake cylinder is used on dual-circuit brake systems. The front right and rear left brakes are actuated by the primary piston, and the front left and rear right brakes are actuated by the secondary piston. The brake master cylinder combines the functions of a standard dual brake master cylinder plus a low brake fluid indicator and brake pressure regulator.
Pressure regulator
The pressure regulator limits the output pressure to the rear brakes after the pressure reaches the limit value in the master brake cylinder. The adjuster is used when less force is needed on the rear brakes to achieve optimal braking.
Brake fluid level sensor
The brake fluid level sensor, located in the brake fluid reservoir, turns on the BRAKE warning light when the brake fluid level is low. As soon as the brake fluid level reaches the correct level, BRAKE goes out.