Hydraulic Brake System, General Information

The hydraulic brake system includes a power booster, main cylinder, reservoir, hydraulic lines, a brake rotor on each wheel hub, and a brake caliper and pad assembly at each rotor.

Open caps and check fluid level.

Fill to this level.

Fig. 1, Hydraulic Brake Fluid Reservoir (Bosch reservoir shown, Bendix reservoir similar)

The main cylinder controls braking power to the front and rear brakes. The Bendix Hydro-Max® power booster is attached to the rear of the main cylinder and is connected to the power steering system (which provides pressurized power steering fluid). An electrical backup pump operates if there is inadequate fluid flow from the power steering pump to the power booster.

The brake system warning light illuminates if there is a problem within the system. Bring the vehicle to a safe stop and correct the problem before continuing operation of the vehicle. See  of the Business Class® M2 Workshop Manual for hydraulic brake system troubleshooting and adjustment procedures.