brake caliper

Brake master cylinder and brake pump, calipers are hydraulic brake pump, brake pump, caliper is indispensable to the braking system parts; By the aid of vacuum booster function when braking, the brake pump the brake fluid in the oil cup, through pipes to send pressure to the brake wheel cylinder, calipers. And brake pump, calipers in through the push rod and the piston movement, makes the brake shoe or friction plate press wheel brake drum and brake disc on the wheels will stop.
Clutch pump and proportional valve is the function of engine speed and hydraulic braking force distribution.