9000 Aero L4-2290cc 2.3L DOHC Turbo EFI (1996)
Brake Master Cylinder: Description and Operation
With Mark IV ABS System
Manufacturer: ATE
Type: Tandem Cylinder
Diameter: 22.2 mm (0.87 inch)
The master cylinder on cars with Antilock Brake System (ABS) MK IV and ABS MK II works on the same principle but is somewhat different in design.
The master cylinder consists of a tandem cylinder which is made of aluminum.
Inside the cylinder are two pistons, a primary piston (nearest the brake pedal) and a secondary piston. There is also a return spring for these pistons with
connections to two brake lines and two hoses from the brake fluid reservoir.
Two central valves made of steel to resist the high pressure in the master cylinder open the passage to the brake fluid reservoir in the rest (brakes off)
position to avoid damaging the sealing rings on braking when the ABS is activated.
Rest (Brakes Off) Position
