How do you adjust the hub and Cup on a bike?
- Hold the axle still with an axle vice and turn the lock-nut anti-clockwise to unlock the bearing. Screw the cone in or out to tighten or loosen the bearing on the rear cup and cone hub. Make small adjustments and check the bearing between each.
How do you tighten a mountain bike hub?
- Use a cone wrench and hold cone from moving. Note position and angle of wrench.
- Use another wrench on locknut and loosen by turning counter-clockwise.
- Recall angle of cone wrench and tighten adjustment by turning cone clockwise 1/32nd of a turn. Imagine cone wrench extending to the rim.
Why is my rear hub loose?
When the hub is loose, the wheel bearings can move from side to side, whether they are ball or cartridge bearings. If your hub has press-fit cartridge bearings, it might not have any way of adjusting the hub tension. In that case, you need new bearings. For all other loose hubs, you must tighten the bearings back down.
How do you tighten a wheel hub?
How to Tighten Wheel Bearings
- Tighten the bearing for the first time.
- Loosen the nut back to where you can turn it with your fingers.
- Tighten the nut to where it is tightened firm once again.
- Loosen the nut to where you can once again turn it with your fingers.
How tight should rear hub?
You want your rear axle very tight. 150 in/lb is about standard. If it is not tight it will allow the rear wheel to move around and it ties your rear triangle together. Basically the whole back of the bike will feel sloppy.
Why does my rear bicycle wheel wobble?
Bicycle wheels support your weight by placing a high amount of tension on the spokes that connect the rim to the wheel hub. Riding your bike regularly, over rough terrain or having an accident can cause the spokes to become tensioned unevenly, thus making the wheel wobble while riding.