Page 1
SI-75A0A-002-00
3
Osaka 590-8577, Japa
General Safety Information
WARNING
– To avoid serious injuries:
●
It is important to completely understand the operation of
your bicycle’s brake system. Improper use of your bicycle’s
brake system may result in a loss of control or an accident,
which could lead to severe injury. Because each bicycle
may handle differently, be sure to learn the proper braking
technique (including brake lever pressure and bicycle
control characteristics) and operation of your bicycle. This
can be done by consulting your professional bicycle dealer
and the bicycle’s owners manual, and by practicing your
riding and braking technique.
●
When securing the brake arm to the frame, be sure to
securely tighten the clip screw and clip nut to the specified
tightening torque.
Use lock nuts with nylon inserts (self-locking nuts) for the
clip nut. It is recommended that standard Shimano parts be
used for the clip screw, clip nut and brake arm clip.
If the clip nut comes off the brake arm, or if the clip screw or
brake arm clip becomes damaged, the brake arm may rotate
on the chainstay and cause the handlebars to jerk suddenly,
or the bicycle wheel may lock and the bicycle may fall over,
causing serious injury.
●
Obtain and read the service instructions carefully prior
to installing the parts. Loose, worn, or damaged parts
may cause serious injury to the rider.
We strongly recommend only using genuine Shimano
replacement parts.
●
Read these Technical Service Instructions carefully, and
keep them in a safe place for later reference.
CAUTION
– To avoid serious injuries:
The Shimano Inter-M brake system cannot be used with
mountain bikes. If you try to use it with mountain bikes,
1.
hard braking operation will cause the internal brake
parts to become very hot, and this may weaken braking
performance. It may also cause a reduction in the amount
of brake grease inside the brake, and this can lead to
problems such as abnormally sudden braking.
If any of the following occur while using the brakes, stop
riding immediately and ask the place of purchase to carry
2.
out inspection and repairs.
1) If abnormal noise is heard when the brakes are
applied
2) If braking force is abnormally strong
3) If braking force is abnormally weak
In the case of 1) and 2), the cause might be not enough
brake grease, so ask the place of purchase to grease the
mechanism with special roller brake grease.
In order to get the best performance from the Shimano
Inter-M brake, be sure to use Shimano brakes cables and
3.
brake levers as a set.
The amount of movement of the inner cable must be
14.5 mm or more when the brake lever is depressed.
If it is less than 14.5 mm, braking performance will
suffer, and the brakes may fail to work.
Check that the brake unit is firmly secured to the hub with
the brake unit fixing nut or the brake unit fixing washer.
4.
Brake unit
Brake unit fixing washer
●
When using the brake unit fixing nut:
Tightening torque:
20 – 25 N·m {174 – 218 in. lbs.}
●
When using the brake unit fixing washer:
Manual insertion
Check that the brake arm is securely fastened to the
chainstay by the brake arm clip. If it is not installed
5.
correctly, braking performance will suffer.
Brake arm clip
Chainstay
Brake arm
If the brakes are used frequently, the
area around the brake may become
6.
hot.
Do not touch the area around the
brake for at least 30 minutes after you
finish riding the bicycle.
If the brake cable becomes rusted, braking performance
will suffer. If this happens, replace the brake cable with a
7.
genuine Shimano brake cable and re-check the braking
performance.
The brake unit should never be disassembled. If it is
disassembled, it will no longer work properly.
8.
If excessive force is
applied to the brake
arm, the wheel will
become difficult to
turn. Make sure
that you don’t apply
excessive force
when installing.
Area around
the brake
NOTE:
●
The Inter-M brake is different from conventional brakes in
that the inside of the brake drum is filled with grease. This
may cause the turning of the wheel to be slightly heavier
than usual, particularly in cold weather.
●
For maximum performance we highly recommend
Shimano lubricants and maintenance products.
●
For any questions regarding methods of handling or
adjustment, please contact the place of purchase.
SI-75A0A-002
BR-IM31-R
Inter-M Brake
BR-IM35-RF
Technical Service Instruction
Installation of the Inter-M brake
After setting the hub onto the frame, install the brake arm of
the Inter-M brake to the chainstay with the brake arm clip,
1.
provisionally tighten the clip screw and clip nut, and then
tighten the brake unit fixing nut.
Note:
If the brake arm is in the incorrect position as shown in
the illustration so that it cannot be provisionally installed to
the chainstay, loosen the brake unit fixing nut and turn the
brake arm. Then, after provisionally securing the brake arm
to the chainstay, tighten the brake unit fixing nut.
Brake arm clip
Chainstay
Brake arm
Tightening torque:
20 – 25 N·m {174 – 218 in. lbs.}
Brake unit fixing nut
Note:
When using the brake unit fixing washer instead of the
brake unit fixing nut, insert the washer into the hub axle by
hand to secure the brake.
Brake arm clip
Chainstay
Brake arm
After securing the hub to the frame with the hub nuts, fix
the brake arm of the Inter-M brake securely to the chainstay
2.
with the brake arm clip.
Brake arm clip
Chainstay
If excessive force is applied to the brake arm, the
wheel will become difficult to turn. Make sure that
you don’t apply excessive force when installing.
Brake unit fixing washer
(manual insertion)
Brake arm
Note:
●
When installing the brake arm clip, securely tighten
the clip screw while holding the clip nut with a 10 mm
spanner.
Tightening torque:
2 – 3 N·m {17 – 26 in. lbs.}
●
After installing the brake arm clip, check that the clip
screw protrudes about 4 mm from the surface of the clip
nut.
Brake arm
Clip nut
Brake arm clip
Clip screw
(M6 × 16mm)
About 4 mm
Installing the brake cable
Place the cable adjusting bolt so that it is 15 – 17 mm from
the end of the brake arm, and then pass the inner cable
1.
through the cable adjusting bolt of the brake arm and then
through the hole in the inner cable fixing bolt.
Brake arm
Cable adjusting bolt
Should be
15 – 17 mm
Check that both ends of the outer casing are securely
inserted into the cable adjusting bolts of both the brake
2.
lever and brake arm.
Cable adjusting bolt
Pull the link back until it stops. Then, while pulling the inner
cable to apply the full amount of tension to the cable, tighten
3.
the inner cable fixing nut.
Tightening torque:
6 – 8 N·m {52 – 70 in. lbs.}
1
Pull
Inner cable fixing nut
Hole in the inner
cable fixing bolt
Both ends of the outer
casing should be
securely inserted.
3
Tighten
Pull strongly
Note:
Set the inner cable so that
it passes below the link.
2
Link
Adjusting the brake cable
After checking that the wheel does not easily turn while the
brake cable is being pulled, depress the brake lever about
1.
10 times as far as the grip in order to run in the brake cable.
Depress about
10 times
Note:
If the brake cable is not run in, it will need to be adjusted
again after only a short period of use.
Turn the cable adjusting bolt so that there is about 15 mm
of play in the brake lever.
2.
The amount of brake lever play is the distance from the
position where the brake lever is not operated to the
position where a force is felt suddenly when the brake
lever is pulled.
15 mm of play
Cable adjusting bolt
After depressing the brake lever to check the braking
performance, secure the cable adjusting bolt with the cable
3.
adjusting nut.
Tightening torque:
1 – 2 N·m
{9 – 17 in. lbs.}
Cable adjusting nut
These service instructions explain how to use and maintain
the Shimano bicycle parts which have been used on your new
bicycle. For any questions regarding your bicycle or other matters
which are not related to Shimano parts‚ please contact the place
of purchase or the bicycle manufacturer.
* Service Instructions in further languages are available at:
http://techdocs.shimano.com
Please note: Specifications are subject to change for improvement
SHIMANO AMERICAN CORPORATION
One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003
SHIMANO EUROPE B.V.
Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222
SHIMANO INC.
-77 Oimatsu-cho, Sakai-ku, Sakai-shi,
without notice. (English)
n
© Sep. 2011 by Shimano Inc. AWS. Printed in China
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