Purchasing a Trailer Center Cap There are a couple of various kinds of trailer hub cap, consisting of Center Caps, Axle Covers as well as Oil Seals. It’s best to understand the difference between them to make sure that you can make a notified purchase. When purchasing a trailer center cap you’ll wish to obtain one that fits your trailer hub. One of the most common sizes are 8 of 5/8″, 8 of 3/4″ and also 12 of 1/2″ studs. You can also find some center caps that have additional long studs if your wheel has a longer lug pattern. Several suppliers supply center covers that cover the main bearing fixtures as well as deal with either oiled or oiled wheel hubs. Most of these come in a set that includes all the needed components for installation right out of package. These generally consist of the centers, bearings as well as a dirt cap. Some likewise come with a grease seal that sits on top of the bearings and also secures them from roadway crud. Depending on what kind of center cap you have you may need a screwdriver or a mallet to tear it off. You can likewise utilize a wood-and-hammer strategy to remove it by laying an item of timber against each side and striking it with a hammer up until you can release it from the hub. If you are buying a trailer center cap from a maker that does not include all the parts needed for installation you need to buy a bundle. This will certainly save you time and money as well as make it less complicated to do the task appropriately. If your trailer has been sitting for a while as well as the oil has settled it is a good suggestion to repack the bearings with a new collection of grease. Professionals suggest doing this every 7,500 miles or two years. Besides cleaning old oil, you need to clean out the seals. This is essential since they might be dripping if they are not pushed firmly versus the bearings. You must additionally inspect the centers and also make certain that they are in great condition. When you prepare to repack the hubs, it is advised that you use marine-grade grease. It’s likewise a great suggestion to examine the wedge pins for indications of wear, such as fracturing or rusting. You need to repack your watercraft trailer hubs every 7,500 miles or more years. Repacking your trailer’s bearings will certainly keep them from becoming infected with roadway crud as well as particles and prevent overheating which can create your wheels to rotate unevenly. It’s likewise an excellent concept for vehicle driver security as it will assist to stop your brakes from overheating and making it hard for you to stop your trailer.