How to remove trailer drum brakes
How to remove trailer drum brakes:
A trailer can come in many different forms, from enclosed horse carriers to open boat haulers and everything in between. Not every trailer has brakes, but those that do put less strain on the pulling vehicle and help keep both vehicles in good shape. Removing the drum brakes on a trailer, be it for servicing or to swap out the axle, can be done at home; it just takes some time.
- Lift up the trailer using the jack and place it on jack stands. Make sure the trailer is secure before you crawl underneath it. Remove the tires using a tire iron and place them to the side.
- Place a flat head screwdriver between the silver dust cap on the end of the brake drum and the drum itself, and tap on it with the mallet to pop off the grease cap. Once it's off, use the pliers to flatten out the cotter pin and pull it out from the hub. Then  unbolt the hub from the axle using a 3/8-inch ratchet and socket, or a large open end wrench.
- Unclip the wiring to the brake using your hands, then unbolt the drum assembly from the flange on the axle using a 3/8-inch ratchet and socket. The bolts point towards the center of the trailer. Pull off the assembly with both hands as it is heavy and place it to the side.