Buying a Trailer Center Cap When purchasing trailer hub cap, there are a few points to think about. For one, like any kind of various other vehicle components, there is a range of styles that will match with your truck as well as create a coordinated appearance. There are also a variety of added devices that you can buy to boost your trailer. These include axle covers, aero covers, wheel simulators and also even more. Some people buy dirt caps to keep the aspects away from their trailer bearings. These can be an excellent suggestion, as well as they are fairly economical. The trouble is that they can come to be harmed, commonly when removing them to check or regrease the bearings. In a lot of cases, the wedge pins that hold them in position might come off. If the wedge pin is not effectively established, it can rub versus the inside of the dirt cap as well as press it off. A far better alternative for securing your bearings is to buy oil-lubricated hubs. Several makers, consisting of EZ Loader as well as Ranger, make these. They work by dipping the hubs in oil that is distributed by centrifugal force as the trailer wheel turns. Some specialists believe this method of lubrication will last longer than grease, as well as it is very easy to check the degree by looking at the oil shade (milky suggests water). Another advantage of these hubs is that they are simpler to relubricate. It is suggested that the lubrication be made with an automated hand oil weapon rather than a pneumatically-driven or auto-greaser, which can apply too much pressure. The excess pressure can flaw the real seal on the bearing and also create the dirt cap to blow off. One disadvantage to making use of oil centers is that they can trigger problems if your trailer rests for long periods of time. The oil will certainly have a tendency to clear up versus the reduced fifty percent of the bearing setting up, leaving it susceptible to contamination from water. This won’t occur with a grease-lubricated center. Additionally, some proprietors locate the oil runs out, producing a tough crust that can be difficult to remove. Luckily, Tiedown Design provides a system that can transform an oil-lubricated trailer center to a grease-lubricated system. This was a 2001 Marine Aftermarket Add-on Trade Show Advancement Award champion. Kodiak Trailer additionally makes a comparable item called TurboLube. It is a two-part system that secures the inner part of the center with an external part that spins with the center to keep the oil flowing.