Raleigh Bike, Owner'S Manual, Page: 16 / 44

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4. TECHNICAL INFORMATION
It’s important to your safety, performance and enjoyment to understand how things work on your
bicycle. We urge you to ask your dealer how to do the things described in this section before you
attempt them yourself, and that you have your dealer check your work before you ride the bike. If
you have even the slightest doubt as to whether you understand something in this section of the
Manual, talk to your dealer. See also Appendix A, B, C and D.
A. Wheels
Bicycle wheels are designed to be removable for easier transportation and for repair of a tire
puncture. In most cases, the wheel axles are inserted into slots, called “dropouts” in the fork
and frame, but some suspension mountain bikes use what is called a “through axle” wheel
mounting system.
NOTE:
If you have a mountain bike equipped with through axle front or rear wheels, make sure that
your dealer has given you the manufacturer’s instructions, and follow those when installing or
removing a through axle wheel. If you don’t know what a through axle is, ask your dealer.
Wheels are secured in one of three ways:
• A hollow axle with a shaft (“skewer”) running through it which has an adjustable tension nut on
one end and an over-center cam on the other (cam action system, figs. 8a & 8b)
• A hollow axle with a shaft (“skewer”) running through it which has a nut on one end and a fitting
for a hex key, lock lever or other tightening device on the other (through bolt, fig. 9)