How to Repair a Bicycle Coaster Brake
Although there are a few minor alterations in some of the details of coaster brakes, they are all similar in the way that they function. There are only a few simple steps required to fix them up so you can be on your way. With a few simple materials, it is going to be extremely easy to repair your coaster brake.
Materials needed:
- Cone wrench
- 10 inch adjustable wrench
- Flat head screwdriver
- Waterproof bearing grease
- Clean cloths
Use a flat head screwdriver to take off the snap ring that is holding the sprocket to the driver.
There is going to be a hub cone that is opposite from the driver. In the wrench flat, you are going to have to place the cone wrench. When you are loosening the axle locknut, grasp the cone wrench firmly. You are going to have to completely take off the locknut and the brake arm.
Take the cone off and look for cracking on the surface. Replace the surface if needed.
Take the non drive side bearings off of the hub shell. Look for cracking and replace if needed.
Slide the axle assembly toward the drive side and take off the whole assembly completely. Check the surface for cracking and replace if needed.
Take the brake shoes and drive shaft bearings off of the hub shell. Check out all of the parts for cracking and pitting. Replace if needed.
Using a clean cloth, wipe off the hub shell and all of the surfaces of all of the parts clean.
Put grease in the hub and coat all of the internal hub parts, including the brake shoes, with grease.
Put the drive side bearings and brake shoes in the hub shell.
Using an adjustable and cone wrench check the tightness of the drive side locknut. Turn the adjustable wrench to the right to tighten the locknut.
From the drive side, put the axle assembly in the hub.
Place the non drive bearings in the hub shell.
Thread the axle cone on axle. Turn to the right until the cone surface contacts bear surface.
Slide the brake arm on the axle. Thread the locknut to the right.
Using the adjustable wrench, turn the locknut to the right and tighten. Check the axle for over tightness. The axle should be able to spin freely. Repeat this step until the axle spins freely.
Using the flat head screwdriver, put in the snap ring and driver sprocket.