9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Brake Caliper: Description and Operation
Front
Manufacturer: Ate
Type Designation: FN 57
Type: Disc Brake With Sliding Hydraulic Body
Piston Diameter: 57 mm (2.24 inch)
The brake caliper for each wheel consists of a hydraulic body with a brake piston, two brake pads and a carrier. The hydraulic body slides on two guide
pins mounted in this carrier. One version of the hydraulic body has a single brake piston and a characteristic of this design is that only a small amount of
heat is transferred to the brake fluid. The brakes are therefore able to withstand a high thermal load.
When the brakes are applied, the hydraulic pressure acts directly on the brake piston and also on the walls of the brake cylinder. The brake piston presses
the inboard brake pad against the-brake disc while at the same time the hydraulic body slides sideways and presses the outboard brake pad also against
the brake disc. When the hydraulic pressure is released, the piston sealing ring retracts the brake piston in each brake cylinder to the rest (brake off)
position.
