Master Cylinder
DESCRIPTIONThe base brakes on a vehicle not equipped with Antilock Brake System (ABS) use a standard compensating port master cylinder, while vehicles equipped with ABS use a center valve design master cylinder. The information provided here applies only to the non-ABS master cylinder.
The non-ABS master cylinder is a four-outlet design with two screw-in proportioning valves. One is attached directly to the inboard side of the master cylinder housing while the other is attached to the bottom. Vehicles equipped with rear drum brakes use a master cylinder with a 22.23 mm (0.875 inch) bore diameter, while vehicles equipped with rear disc brakes use a 23.82 mm (0.937 inch) bore diameter master cylinder.
The master cylinder body is an anodized aluminum casting. It has a machined bore to accept the master cylinder piston and also has threaded ports with seats for hydraulic brake line connections.
The master cylinder's primary outlet ports supply hydraulic pressure to the right front and left rear brakes while the secondary outlet ports supply hydraulic pressure to the left front and right rear brakes.