Getting a Trailer Center Cap A trailer center cap keeps dirt and also debris far from the lug nuts on your steel wheels. Without them, the studs can corrosion as well as spoil their strings with time. Maintaining them clean additionally enables you to transform your trailer wheels simpler, which is specifically vital if you utilize your trailer for offroad travel. There are various kinds of hub caps offered, and also some don’t fit all kind of wheels. Prior to acquiring one, consider your make and also design, as well as the stud dimension of your trailer wheels. Dust caps are the most standard sort of bearing protectors, as well as if you take a look around any type of boat ramp it’s most likely that half the trailers have them. They’re affordable, yet they can get dirty quickly and also strike off under some problems. Some professionals advise utilizing them, but others strongly recommend getting an extra costly sort of center guard (see below). There are several ways to keep your dirt cap in place, but a typical method is to add a thin layer of oil with a hand oil gun on the inside of the trailer wheel. This makes the wheel’s studs stand out and also holds the cap in place, however it’s not a good suggestion to overdo the oil. Way too much can tax the real seal and also trigger it to blow off. The various other reason that dust caps come off is that they’re usually removed to check or service the wheel bearings as well as do not go back on appropriately. There are tales of wedge pins or castle nuts slipping while being re-installed, and the cap can get ripped off at the same time. Some specialists suggest placing the cap on initial, after that boosting the trailer and also tapping it with a timber block and also a hammer. This helps to disperse the pressure of reinstallation as well as established the cap equally. Lots of professionals are likewise not on board with the oil-filled hubs found on a variety of boat trailers. They state the oil will clear up, through gravity, versus the lower half of the hub setting up and also leave the top half vulnerable to contamination by water. They likewise state that the oil will not stay on the studs as successfully as oil and also could spill off the studs while driving.