What tool is used to remove a cotter pin?
Removing a Stuck Cotter Pin Use a cotter pin removal tool–resembling an awl with a bent tip–to loosen a stuck pin. Insert the tip through the loop of the cotter pin and pull the pin out. While pulling on the remover’s handle, use the bend in the shank as a fulcrum to increase the pulling power of the tool.
What is a cotter pin crank?
Many older bicycles use wedge-shaped fasteners called “cotters” to hold the cranks onto the bottom bracket axle. These cotters have a nut to hold them in place after they have been driven or pressed in. They can be difficult to remove, especially if they have been in place for a long time.
Why is it called cotter pin?
cotter (n.) “wedge-shaped piece or bolt which fits into a hole used in fastening or tightening,” 1640s, of uncertain origin; perhaps a shortened form of cotterel, a dialectal word for “cotter pin or bolt, bracket to hang a pot over a fire” (1560s), itself of uncertain origin. Cotter-pin is attested by 1849.
How do you remove a bowtie cotter pin?
Push or pull the cotter pin leg into the mating hole, the Bow-Tie Locking Cotter Pin snaps into a zero- tension locked position. It is easily released by lifting the loop and sliding the cotter pin off.
How do you remove a cotter pin from a bike?
[Update, September, 2013: the Park cotter pin press has been discontinued but one is available from Bikesmith — John Allen.] Fortunately, the most common tool to remove cotters is one found in just about every household: the hammer. To drive out a cotter that’s been properly installed requires one or two very hard hammer blows.
How do you stop crankshaft cotters from cracking?
You can prevent this by supporting the crank from below while you are hammering on the cotters. One way is by holding the head of a sledge hammer underneath the thick end of the crank, so that the mass of the sledge hammer will absorb the impact. This works, but is a bit awkward to do without assistance.
What is a recalcitrant crank cotter?
These cotters have a nut to hold them in place after they have been driven or pressed in. They can be difficult to remove, especially if they have been in place for a long time. Recalcitrant crank cotters are among the most challenging bicycle repair problems.
How do you remove cotters from bottom brackets?
There is a special tool for installing and removing the cotters, called a cotter press. This is strictly a shop tool: it weighs several pounds and is quite expensive. Bicycle shops that do a great deal of work on cottered bottom brackets might consider investing in a Park Tools cotter press; I’ve tested it several times and found it satisfactory.