Nov 13 , 2018

Repacking Trailer Wheel Bearings

Project overview

Many trailer manufacturers recommend this maintenance every year if your trailer gets normal use, or at least every 20,000 miles. To do this job, you’ll need a jack, a pair of jack stands, a large flat-head screwdriver, a hammer and a needle-nose pliers, clean rags, a small pan, about a quart of kerosene and a spray can of brake cleaner.

First, loosen the lug nuts on one wheel and raise the side of the trailer with a jack. Support the trailer with jack stands and then spin the wheel and listen to the trailer bearings. If the wheel spins freely and quietly, proceed with repacking the bearings. If you hear friction or a growling sound, you most likely have a bad bearing or spindle. If this is the case, take the trailer to a service center to get the trailer bearings replaced. Plus check out this super cool High-Visibility Trailer DIY.

Figure A: Typical trailer hub assembly

You can download and print Figure A from the Additional Information section below. Follow along as we show you trailer bearings repacking—start to finish.

Remove the wheel

Remove the lug nuts and the wheel. Be sure that the trailer is supported with jack stands and the opposite wheel is blocked.

Plus: 100 Super-Simple Car Repairs You Don’t Need to Go to the Shop For

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