22
specications in Appendix D or the hub manufacturer’s instructions.
NOTE: If, on a traditional cam action system, the lever cannot be pushed all the
way to a position parallel to the seat stay or chain stay, return the lever to the
OPEN position. Then turn the tension adjusting nut counterclockwise one-quarter
turn and try tightening the lever again.
WARNING: Securely clamping the wheel with a cam action retention
device takes considerable force. If you can fully close the cam lever
withoutwrappingyourngersaroundtheseatstayorchainstayfor
leverage, the lever does not leave a clear imprint in the palm of your hand,
and the serrations on the wheel fastener do not emboss the surfaces of the
dropouts,thetensionisinsufcient.Openthelever;turnthetension
adjustingnutclockwiseaquarterturn;thentryagain.Seealsotherst
WARNING in this Section, p. 18.
(8) If you disengaged the brake quick-release mechanism in 3. c. (2) above,
re-engage it to restore correct brake pad-to-rim clearance.
(9) Spin the wheel to make sure that it is centered in the frame and clears the
brake pads; then squeeze the brake lever and make sure that the brakes are
operating correctly.
B. Seat post cam action clamp
Some bikes are equipped with a cam action seat post binder. The seat post
cam action binder works exactly like the traditional wheel cam action fastener
(Section 4.A.2) While a cam action binder looks like a long bolt with a lever on
one end and a nut on the other, the binder uses an over-center cam action to
rmly clamp the seat post (see g. 8a).
WARNING: Riding with an improperly tightened seat post can allow
the saddle to turn or move and cause you to lose control and fall.
Therefore:
1. Ask your dealer to help you make sure you know how to correctly
clamp your seat post.
2. Understand and apply the correct technique for clamping your seat
post.
3.Beforeyouridethebike,rstcheckthattheseatpostissecurely
clamped.
Adjusting the seat post cam action mechanism
The action of the cam squeezes the seat collar around the seat post to hold
the seat post securely in place. The amount of clamping force is controlled by the
tension adjusting nut. Turning the tension adjusting nut clockwise while keeping
the cam lever from rotating increases clamping force; turning it counterclockwise
while keeping the cam lever from rotating reduces clamping force. Less than
half a turn of the tension adjusting nut can make the difference between safe and
unsafe clamping force.