Trailer Hub Bearings Maintenance Tips

Trailer Hub Bearings Maintenance

While servicing hub bearings isn’t always fun, it can prevent the loss of valuable time while towing your trailer. The most effective way to keep your rig rolling is vigilance. In addition to greasing the bearings, you need to take them apart to service them at least once per year. Therefore, we have put together a few trailer hub bearings maintenance tips.

Trailer Hub Bearings Maintenance

Removing Trailer Hub Bearings

Trailer hub bearings can be removed by prying off the dust caps with a screwdriver by tapping the blade under the lip and rotating the hub as you pry off the cap. If so equipped, bearing protectors have no lip to pry under. So, tap the protector as you rotate the hub, using a plastic mallet so you won’t dent the protector.

Cleaning Trailer Hub Bearings

Trailer hub bearings can be cleaned by washing the parts in a solvent after manually removing as much grease as possible.

Then, blow-dry the parts with compressed air, if available. Don’t spin the bearings at high speeds with compressed air. This can cause them to literally explode in your hand.

Inspecting Trailer Hub Bearings

If the the trailer hub bearings are pitted, colored blue or black, scored, galled or rusted, replace them.

If you are unsure, replace them anyway to be safe. Make sure to replace the bearing races as well since these match with the bearings. You can remove or install them with a hammer and punch.

Repacking Trailer Hub Bearings

A bearing packer makes loading grease neater.

If you are doing this by hand, place a dollop of grease in your palm. Then, smush the hub bearings into it with your other hand. Firmly work the grease into the bearing until it begins to appear on the other side. In addition, rotate the bearing as you go to ensure that it is full.

Sealing Trailer Hub Bearings

For the rear seal, with the inner bore of the hub completely clean, wipe a film of grease into the bearing races. Place the greased inner bearing into the race.

Then, coat the outer edge of the seal with liquid sealant. Tap it into the hub until flush with the end of the bore. You can use a mallet and a socket of equivalent diameter as an installation tool.

Checking Trailer Hub Bearings

You will need a new axle if there is deep scoring, pitting or rust on the axle shaft where the bearings ride.

If the area where the seal rides has a score or pits, you can solve the grease leakage problem this causes by fitting the axle with a spindle seal. The seal comes in a kit, generally available from dedicated trailer retailers.


These are just a few trailer hub Bearings maintenance tips. Contact Gooseneck Trailers with the link below for more information!

Leave a Reply

Your email address will not be published. Required fields are marked *