How to Check RV Trailer Brakes
Trailer brakes are necessary when the weight of a recreational vehicle exceeds the weight that a tow vehicle can pull. Trailer brakes are either surge brakes or electric breaks. Electric tow breaks are activated when the pedal on the tow vehicle is engaged. Surge brakes, meanwhile, are activated when a sensor on the trailer feels the RV slowing. Either of these brake systems can use drum brakes or disc brakes and both systems need a regular safety check.
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Things You'll Need
- Flathead screwdriver
- Flashlight
- Socket set
- Jack
- Wheel chocks
- Gloves
- Eye protection
- Assistant
Instructions
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1
Chock the wheels on the tow vehicle. Use a screwdriver to remove the hubcaps on each wheel. Loosen the nuts on each wheel with a socket wrench. Jack up each wheel and use the socket wrench to remove the loosened nuts holding the tire. Remove the tires.
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2
Check the mechanical condition of the drums, shoes and springs if the RV is equipped with drum brakes. Replace anything badly worn or corroded.
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3
Check the mechanical condition of the rotors and pads on disc brakes. If the rotors are warped, have them turned at an auto supply shop. Replace the rotors if they are too badly damaged to turn. Replace the pads if they are too thin or loose. Mount the tires after either the disk or drum brakes are checked and necessary repairs are made.
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4
Check the operation of electric brakes by first checking the condition of the wiring and the connections. Replace anything that is worn or frayed. Spin the wheels by hand to check that the wheel turns freely. Have someone else press the brake pedal and make sure the brakes evenly engage by turning the wheel and checking it does not move.
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5
Check the surge brakes by first checking the sensor in the coupler to make sure it is not corroded or rusting. Spin the wheels by hand to check that the wheel turns freely. Ask the other person to press on the sensor in the trailer coupler to engage the brakes. Make sure both operate evenly by spinning each wheel by hand.
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6
Replace any worn or broken parts found after checking either the surge or electric brakes. Recheck the brakes after replacing parts to make sure of proper operation.
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Tips & Warnings
Always wear gloves and eye protection when working on equipment.
