Hydraulic Brake System Operation
Important: Make sure that the fluid level in the main cylinder reservoirs is at the bottom of the fill-neck. See Fig.. 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 Fluid Reservoir (Bosch reservoir shown, Bendix reservoir similar)
Important: Before driving the vehicle, secure all loose items in the cab so that they will not fly forward during a full brake application. Make sure all passengers are wearing seat belts.
During normal brake stops, depress the brake pedal until braking action slows down the vehicle. Increase or decrease the pressure on the pedal so that the vehicle comes to a smooth, safe stop. Apply the parking brake if the vehicle is to be parked.
When parking a vehicle attached to a trailer, apply the tractor parking brake. Chock the trailer tires before disconnecting the vehicle from the trailer.