How to Install a Surly Hub Bearing

A bicycle is a mode of transportation that is both good for your health and the planet. Like all mechanical devices, bikes require regular maintenance to run properly. One of these repairs is the changing of the wheel hub bearings every few years. This assures the wheels spin smoothly on the hub, allowing the bike to glide effortlessly. New bearings will reduce the amount of work the rider needs to exert to peddle the bike.

Things You'll Need

  • 7901 cartridge bearings
  • Wrenches
  • Bike hub grease
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Instructions

    • 1

      Insert an open-ended wrench around the cone flat on the end of one side of the axle.

    • 2

      Loosen the opposing side locknut, by turning it counterclockwise with a wrench. Remove the cone and locknut and slide the axle out of the hub.

    • 3

      Remove both bearings from the hub by pulling them off. Remember their original position on the hub for installation of the new bearings.

    • 4

      Clean the grease off the hub with an old rag and inspect the condition of the hub for pitting or grooves. If the hub is damaged, it is best to purchase a new wheel hub assembly.

    • 5

      Place one of the bearings in your hand and push new grease into the bearing. Take your time and work in as much grease as possible. Repeat this process for the other bearing.

    • 6

      Install the bearings back on the hub, making sure to orient them in the same fashion as the original bearings.

    • 7

      Insert the hub back into the wheel and tighten the locknut against the cone. There should be no play in the hub and it should spin freely.