General Information
The hydraulic brake system includes a power booster, main cylinder, reservoir, hydraulic brake lines, a brake rotor on each wheel hub, and a brake caliper and pad assembly at each rotor.
Important: Make sure that the fluid level in the main cylinder reservoirs is at the bottom of the fill-neck. See figure . Use only heavy-duty brake fluid, DOT 3, in the hydraulic brake system.
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Open caps and check fluid level.
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Fill to this level.
Fig. 1, Hydraulic Brake Reservoir (MT-45 and MT-55)
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 electrically powered ‘reserve’ pump operates if there is inadequate fluid flow from the power steering pump to the power booster. The brake system warning light comes on 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 Group 42 of the Walk-In Van Chassis Workshop Manual for hydraulic brake system troubleshooting and adjustment procedures.