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Inspection, Service & Maintenance and the breakaway pin is pulled. The other brake is an electric braking system that acts whenever the brakes of the tow vehicle are applied. Breakaway Brake Breakaway Battery - This battery supplies the power to operate the trailer brakes if the trailer uncouples from the tow vehicle. Be sure to check, maintain and replace the battery according to the battery manufacturer’s instructions. Breakaway Switch - This switch causes the breakaway battery to operate the electric brakes if the trailer uncouples from the tow vehicle. The lanyard for the pull pin is connected to the tow vehicle, and the switch is connected to the trailer. To check for proper functioning of the switch, battery and brakes, you must pull the pin from the switch and confirm that the brakes apply to each wheel. You can do this by trying to pull the trailer with the tow vehicle, after pulling the pin. The trailer brakes may not lock, but you will notice that a greater force is needed to pull the trailer. Do Not Use Breakaway Switch as Parking Brake. 149 ! WARNING If electric breakaway brakes do not operate when trailer is uncoupled from the tow vehicle, death or serious injury can occur. Check emergency breakaway brake system BEFORE each tow. 10.2.1.6 Tow Vehicle Operated Electric Brakes The electric brakes that operate in conjunction with the tow vehicle brakes must be “synchronized” so that braking is properly distributed to the tow vehicle brakes and the trailer brakes. For proper operation and synchronization, read and follow the axle/brake and the brake controller manufacturers’ instructions. If you do not have these instructions, contact your dealer for assistance. 10.2.1.7 Magnets for all Electric Brakes To make certain an electrically-operated braking system will function properly, you must have your dealer inspect the magnets at least once a year, or each 12,000 miles. See the brake manual for wear and current inspection instructions. TRAILER BRAKES – SURGE (IF EQUIPPED) 10.2.1.8 Surge Brake Master Cylinder Check fluid level prior to using the trailer. The master cylinder (1) is located on the tongue of the trailer. The fluid level must maintained at no less than ½ full, and no more than ½ inch from the top. Use DOT type 3 or 4 automotive brake fluid.


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