Setting up Your Trailer Brakes
Much like with vehicle brakes, you will be able to tell by the change in performance of your trailer. You may have noticed a squealing or screeching noise while you have been driving – if this is the case, you need to examine your trailer’s brakes.
Check your trailer brakes by jacking up your trailer and removing the wheel. Look on the inside of the drum grooves on the drum’s inner wall. If the grooves look deep, or you see evidence of burnt spots, you need to replace the drum. While you’re replacing your trailer brakes, use it as an opportunity to clean and lubricate the wheel bearings as well.