22
(2) Put the chain on to the smallest sprocket. Then, insert the wheel into the frame dropouts
and pull it completely in to the dropouts. The axle nut washers should be on the outside,
between the frame and the axle nut.
(3) Using the correct size wrench, tighten the axle nuts enough so that the wheel stays in
place; then use a wrench on each nut simultaneously to tighten the nuts to 240 - 300
inch pounds.
(4) Push the rear derailleur back into position.
(5) If you disengage the brake quick-release mechanism in 3.g. (1) above, re-engage it to
restore correct brake pad-to-rim clearance.
(6) 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. Seatpost Cam Action Clamp
Some bikes are equipped with a cam action seat post binder. The seatpost 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 firmly clamp the seat post (see figs. 8a & 8b).
WARNING:
r
iding
with
an
improperly
tightened
seat
post
Can
allow
the
saddle
to
turn
or
move
and
Cause
you
to
lose
Control
and
fall
. t
herefore
:
1. a
sk
your
dealer
to
help
you
make
sure
you
know
how
to
CorreCtly
Clamp
your
seat
post
.
2. u
nderstand
and
apply
the
CorreCt
teChnique
for
Clamping
your
seat
post
.
3. b
efore
you
ride
the
bike
,
first
CheCk
that
the
seatpost
is
seCurely
Clamped
.
Adjusting The Seatpost 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.
WARNING:
t
he
full
forCe
of
the
Cam
aCtion
is
needed
to
Clamp
the
seatpost
seCurely
. h
olding
the
nut
with
one
hand
and
turning
the
lever
like
a
wing
nut
with
the
other
hand
until
everything
is
as
tight
as
you
Can
get
it
will
not
Clamp
the
seatpost
safely
.
WARNING:
i
f
you
Can
fully
Close
the
Cam
lever
without
wrapping
your
fingers
around
the
seat
post
or
a
frame
tube
for
leverage
,
and
the
lever
does
not
leave
a
Clear
imprint
in
the
palm
of
your
hand
,
the
tension
is
insuffiCient
. o
pen
the
lever
;
turn
the
tension
adjusting
nut
CloCkwise
a
quarter
turn
;
then
try
again
.
C. Brakes
There are three general types of bicycle brakes: rim brakes, which operate by squeezing the
wheel rim between two brake pads; disc brakes, which operate by squeezing a hub-mounted
disc between two brake pads; and internal hub brakes. All three can be operated by way of
a handlebar mounted lever. On some models of bicycle, the internal hub brake is operated by
pedaling backwards. This is called a Coaster Brake and is described in Appendix C.
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