Specialized Expedition Ball Bearing Cone Adjustment and Installation Replacement
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This guide will be a walk through on how to replace the ball bearings in your wheels.
- Author: Tyler Parra
- Time required: 30 to 45 minutes
- Difficulty: Difficult
The ball bearings reduce the friction caused by the rotating wheel by concentrating it on rolling bearings, in this case there are ten on each side of the axle. Well maintained ball bearings will help the wheel spin more freely and allow for an easier and smoother ride.
- When cleaning the bearings and cones, solvents like kerosene can be very effective, however, just a wipe down with a rag is sufficient.
- When the wheel is assembles correctly there should be very little resistance between the axle and the wheel and each should spin freely of the other.
- Some of these steps require near-perfect alignment. They may take several tries to get right, so patience is a must.
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Fit the cone wrench to the cone, and fit the open end wrench to the top lock nut. Hold the cone in place with the cone wrench and turn the open end wrench to loosen and remove the top lock nut.
Keep track of which side each lock nut goes on. The order is important because the threading for each nut is specific for each side.
Hand tighten bearing cone onto the free end of the axle, so that it touches the bearings without putting any pressure on them.
Ideally, there should be no movement or give in the axle when you pull on it or try to wiggle it. Additionally, the axle should be able to spin freely in the wheel, with minimal resistance.