Quick Release (Disc brake)
24N0-En
03.8.29 0:18 PM
Page 1
General Safety Information
WARNING
• This wheel is equipped with a quick release hub to facilitate installation and removal. Failure to
properly install this quick release hub (wheel) onto your bicycle may cause the wheel to become
detached from the bicycle while you are riding and result in serious bodily injury.
• Use a front fork which is equipped with a wheel retention mechanism.
• BEFORE USE, CAREFULLY READ THE QUICK RELEASE SERVICE INSTRUCTIONS IN YOUR
OWNER’S MANUAL. IF YOU HAVE ANY QUESTIONS, ASK YOUR DEALER. IMPROPER HUB
INSTALLATION CAN RESULT IN SERIOUS BODILY INJURY.
• Obtain, read and carefully service instructions when installing parts. A loose, worn, or damaged
parts may cause injury to the rider.
We strongly recommend that only genuine Shimano replacement parts be used.
• If the quick release lever is installed to the left side of the front fork, this may result in not enough
clearance between the rotor and the quick release lever as shown in Figure 1.
Accordingly, install the quick release lever to the right side of the front fork as shown in Figure 2. If
the quick release lever is on the same side as the rotor, check that it does not interfere with the rotor.
Furthermore, make sure that the front fork does not obstruct the operation of the quick release lever.
If the front fork obstructs the quick release lever so that the wheel cannot be secured properly, the
wheel may fall off the bicycle during riding, and serious injury may occur as a result.
Figure 1
Quick release lever
The clamping strength is adjusted
by turning the adjusting nut. When
the nut is turned in a clockwise
direction, the clamping strength
increases, and when the nut is
turned in a counter-clockwise
direction, the clamping strength
decreases.
Adjusting nut
Stronger
Spoke lacing method
CAUTION
Weaker
1. Lace the spokes as shown in Figure 1 below for the left side of
Never fasten a wheel to a frame by rotating the
quick release lever as shown in the diagram on
the right.
Simply rotating the lever in a circular motion
will not fasten the wheel to the frame.
Detachment of the wheel as a result of
improper hub installation can result in serious
bodily injury.
the front wheel (the side where the roter is installed), and the
left and right sides of the rear wheel, and as shown in Figure 2
below for the right side of the front wheel.
Rotating
direction of
wheel
Front left
Rear left
Rear right
Front right
Suitable dimensions of the fork end
Be sure to use only fork widths with suitable dimensions.
Notes
Front ...
Rear ...
cannot use fork thicknesses less
than 4 mm.
cannot use fork thicknesses less
than 5 mm.
If the quick release lever can be easily pushed to the CLOSE position, this
means the clamping strength is insufficient. Return the
quick release lever to the position
perpendicular to the bicycle frame
and again turn the adjusting nut
clockwise to increase the clamping
strength. Push the quick
release lever back to the
CLOSE position.
Figure 1
Figure 2
2. Use a 6-spoke (three cross) or 8-spoke (four cross) assembly
when lacing the spokes. A radial assembly cannot be used.
Figure 1
Adjusting nut
Operation method
WARNING
The front axle is explained as an example. The rear axle works in the same
way.
OK
How to fasten this quick release hub
CLOS
E
Rotor
1. Move the quick release lever to the
OPEN position and set the wheel so it
firmly touches the interior of the fork
end (See sketch below).
Not OK
OPEN position
• Read these Technical Service Instructions carefully, and keep them in a safe place for later
reference.
THINGS TO CHECK BEFORE RIDING
1. Always check your quick release hubs before riding to make
If the clamping strength is adjusted too strong and the quick release lever
cannot be pushed to the CLOSE position, turn the adjusting nut in a
counter-clockwise direction to reduce the clamping
strength. When doing this, do not fully
release the adjuster nut. Turn it 1/8
Turn 1/8 revolution
of a revolution, and then try to push
at a time
the lever to CLOSE, to set the
maximum clamping strength with
which you can push the quick
release lever to the CLOSE
position.
sure that the wheels are correctly installed on the bicycle
frame. This is especially important after you park your
bicycle in a public place.
2. Make sure that the quick release levers are pushed fully to
the CLOSE position (the side of the lever with the inscription
“CLOSE” must be facing away from the wheel).
As shown in the diagram.
the lever must be lifted,
not rotated.
CLOSE position
CAUTION
• Be sure to operate the quick release lever by hand only. Never use any other tool such as a
hammer to tighten the quick release lever, as this could cause damage to the lever.
OPEN position
Note
Positioning of the quick release lever
• Parts are not guaranteed against natural wear or deterioration resulting from normal use.
• For maximum performance we highly recommend Shimano lubricants and maintenance products.
OK
No Good
For safety, the quick release lever should be along the bicycle frame when
in the CLOSE position.
2. Open and close the quick release lever with your left hand while
Technical Service Instructions
SI-24N0E
gradually tightening the adjusting nut (located on the opposite side of the
hub) with your right hand in the clockwise direction. Continue tightening
the nut until you feel resistance with your hand at the point when the
lever is parallel to the hub (as indicated by the
dotted position in the diagram
on the right).
Quick Release (Disc brake)
Rear
Adjusting nut
What is a Quick Release?
Quick release lever
It is a mechanism that uses a single quick
release lever operation on the hub to enable
the wheel to be easily installed and removed.
When the quick release lever is brought to
the closed position, the lever nut moves
inward. The force of this clamps the wheel to
the frame and holds the wheel securely in
place.
CLOSE position
Adjusting nut
OPEN position
Lift up the bicycle so that the wheel is off the ground, and give
the top of the tire a few sharp downward blows as shown in the
diagram. The wheel should not be loose or come off. This
check does not guarantee that the quick release lever has
received adequate tightening torque.
If you are uncertain as to whether the quick release is
tightened correctly, repeat the installation procedure as
explained in “How to fasten this
quick release hub” of this service
instruction.
Front
Removing the wheel
Move the quick release lever from the CLOSE position to the OPEN
position.Loosen the adjusting nut, and then remove the wheel.
If the quick release will not adjust properly, please contact a
professional dealer for advice.
3. Grip the fork with your fingers and use the palm of your hand to close
Quick Release function
QUICK CHECK
the quick release lever with as much strength as possible. When closed,
the quick release lever must be in the “CLOSE” position shown below in
the diagram on the right. The side of the lever with the inscription
“CLOSE” must be facing away from the wheel, and the lever should be
parallel to the fork as shown below in the diagram on the left.
Tightening torque:
5 -7.5 N·m {43 -65 in. lbs.}
CLOSE position
Fork
Lever nut
®
Open position
Quick release lever
Quick release
lever
These service instructions are
printed on recycled paper.
One Holland Irvine CA 92618 U.S.A. Phone 949-951-5003
Industrieweg 24 NL-8071 CT Nunspeet Holland Phone 31-341-272222
77 Oimatsu-cho 3-cho Sakai Osaka 590-8577 Japan
Please note: specifications are subject to change for improvement without notice. (English)
© Dec. 2002 by Shimano Inc. XBC SZK Printed in Japan
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