86439 Left/Right Trailer Brake 12′ Electric Brake Heavy Duty 7000lbs
12 'heavy-duty electric brake
The magnets in the back panel have two wires that are directly connected to the trailer wiring. When energized, it magnetizes the brake magnet. The interest is attracted to the surface of the drum. When it comes into contact with the area, the friction causes it to rotate, move the actuating arm, and push the brake shoes out of the brake drum. These brake shoes have a particular type of brake pad material that can resist friction-generated heat. When the brake shoes are pressed against the inside of the brake drum, the brake shoes prevent the wheel hub from rotating, thereby preventing the wheel from rotating when in contact with the ground.
How to install electric brakes on a trailer
Firstly, you must remove the existing hub. Use a trailer as support. Remove the wheel. The dust cover is a metal cover located in the center of the wheel hub. Tap the screwdriver behind the "lip" and open the grease dust cover.
Under this cover, you will see a large nut and a cotter pin; in some new models, there is a small metal "clamp" on the nut. Straighten and remove the split pin, or use a small screwdriver to pry the small metal clip off the nut. It slammed into the nut and then bounced open.
The nut should be loose. Remove the nut with a washer and an "external" bearing behind it. If you miss them, they will fall to the floor. Remove the nut and gently pull the entire wheel hub off the axle.
86439 left/right trailer brake 12 'heavy-duty electric brake 7000 pounds
Next, find the correct backplane. These markings are left or right. If you sit in the driver's seat and look forward. The magnet is always at the bottom, and the 'arm' is always in front!
Install the lock washer under the nut and tighten it. Pay attention to the two green brake lines (in this photo, one end is inserted into the back panel '). On brake magnets, they are not positive or negative (they are not grounded), so it is not essential which wire to connect.
Ensure that the outer bearing is lubricated, then place the hub, washer, and nut. When tightening, unscrew the nut and turn the hub. When rotating, tighten to approximately 40 foot-pounds (very tight to secure the bearings and hub).
After tightening the nut, stop rotating the drum and gently loosen it until it is tightened with your fingers.
Insert the cotter pin. If you don't do this, the nut will come off, and you will loosen the tire!. If the nut is tightened too tightly, it will burn out the wheel bearings! It must be fingers too tight!
If there is a metal "clamp" on the shaft nut, align the plane of the hole with the plane of the clamp and tighten it.
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A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
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A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shippment.
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A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation. If you have another question, please feel free to contact us.
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