What tool is used to remove gears?
A puller is a tool used to remove parts such as bearings, pulleys or gears from a shaft.
What is the main part of a gear puller?
The mechanical gear puller consists of a central screw that runs by screwing on a plate, which is equipped, in most cases, with two or three arms that are fixed or hooked to the body to be extracted. The large gripping area of the arms is very useful for quickly disassembling gears, pulleys, ball bearings, etc.
How are gear pullers sized?
One rule of thumb in choosing a puller is the center bolt diameter must be at least ½ the diameter of the shaft from which the object is being removed. It is impossible to predict the exact force needed for every pulling situation. The amount of press fit and force of removal can vary greatly between jobs.
How do I take the pedal crank off my bike?
Use a 15mm wrench to loosen the left pedal from the bike. Then, hold the left pedal and rotate the crank arm to completely detach it from the bike. Both pedals should now be completely removed. If you’re standing on the right, or drive side, of the bike, rotate the crank arm clockwise.
How much does it cost to replace a bike cassette?
The cost to replace a cassette or freewheel can range anywhere from $25 to upwards of $300 on high end bikes and chainrings can run anywhere from around $40 to $250 on high end bikes.
What is a bicycle freewheel?
A freehub is a type of bicycle hub that incorporates a ratcheting mechanism. A freewheel mechanism allows a rider to stop pedalling whilst the cycle is still in forward motion. On a cycle without a freewheel mechanism, the rider has to keep pedalling whenever the cycle is moving.