A WARNING
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.
SERVICE INSTRUCTIONS
FH-IM40
SI-31W0B
Freeheb
Inter-M Brake
BR-IM41-R
Before use, read these instructions carefully, and follow them for correct use.
SHIMANO’
NEXUS
Be sure to use the shifting lever and the cassette sprocket in
one of the following series combinations (7-speed).
Series Shifting lever Cassette sprocket
SHIMANO STX ST-MC34 CS- 1660
SHIMANO ALIVIO | ST-MC12-C/MC15-C| CS-1G50 |
“SHIMANO ACERA-X | SB-M290/M295 CS-HG50-C
SHIMANO ALTUS — | SB-CT91-7/CT95-7 CS-HG30-7
Be sure to read these service instructions in conjunction with
the service instructions for the shifting lever before use.
/\ CAUTION
1 The Shimano Inter-M brake system cannot be used with
- Mmountain bikes. If you try to use it with mountain bikes,
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.
9 If any of the following occur while using the brakes, stop
"riding immediately and ask the place of purchase to carry
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.
3, In order to get the best performance from the Shimano
Inter-M brake, be sure to use Shimano brakes cables
and 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.
4. Check that the brake unit is firmly secured to the hub
body with the brake unit fixing nut.
Brake unit fixing nut
Tightening torque:
20 — 25 Nm
{174 - 217 In. Ibs.}
Brake unit
Check that the brake arm is securely fastened to the
" chainstay by the brake arm clip. If it is not installed
correctly, braking performance will suffer.
6, If the brakes are used frequently,
the brake drum may become hot.
Do not touch the brake drum for at
least 30 minutes after you finish
riding the bicycle.
Brake drum
— =
7 If the brake cable becomes rusted, braking performance
" will suffer. If this happens, replace the brake cable with a
genuine Shimano brake cable and re-check the braking
performance.
8 The BR-IM41-R brake unit should never be disassembled.
"If it is disassembled, it will no longer work properly.
NOTE:
e The Inter-M brake is ditferent 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.
e For any questions regarding methods of handling or
adjustment, please contact the place of purchase.
Disconnecting the brake cable
from the brake unit
|, Push the link back until it stops. Then slide the inner
“ cable fixing bolt unit along the guide hole and
remove it from the hole. If the inner cable fixing bolt
unit is difficult to remove, turn the cable adjusting
bolt clockwise to loosen the cable tension and then
remove the inner cable fixing bolt unit.
Slide the outer casing holder along the guide slot in
" the brake arm to
remove it from
the slot.
Guide slot
Outer casing holder
ama
Cable adjusting bolt
To install the brake cable again, carry out the
above procedure in reverse.
Note:
® While looking from the rear of the link, check
that the inner cable fixing bolt unit is firmly
seated in the position shown in the above
illustration.
Inner cable fixing
bolt unit
Guide hole
® Depress the brake lever to check the braking
performance. If the braking performance is poor,
adjust the brake cable once more while referring
to “Adjusting the brake cable”.
Installation to the frame
1, Install the brake arm of the Inter-M brake to the-chainstay
" with the brake arm clip, provisionally tighten the clip bolt
and clip nut, and then firmly tighten the cap nut to secure
the wheel to the frame.
Tightening torque:
30 — 45 Nm {260 — 390 in. Ibs.)
2 Fix the brake arm of the Inter-M brake securely to the
“ chainstay with the brake arm clip.
Brake arm clip_— 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.
Chainstay
\
Brake arm
Note:
® When installing the brake arm clip, securely tighten
the clip bolt while holding the clip nut with a 10 mm
spanner.
E torque:
2- 3Nm(17 - 26 in. Ibs.}
@ After installing the
brake arm clip, check
that the clip bolt
protrudes about 3 — 4
mm from the surface
of the clip nut.
Brake arm
clone Brake arm clip
Clip bolt
(M6 x 18 mm)
Installing the brake cable
Slide the outer casing holder
" along the guide slot in the brake
arm to set it into the slot.
Outer casing a
While holding the link to secure it so that it does not
" move, slide the inner cable fixing bolt unit along the guide
hole to install it.
Guide slot
Brake arm
Inner cable fixing bolt unit
Pull strongly
Note:
While looking from the rear of the link, check that the
inner cable fixing bolt unit is firmly seated in the
position shown in the above illustration.
Inner cable fixing
bolt unit
Guide hole
3 Place the cable adjusting bolt so that it is 20 — 22 mm
" from the end of the outer casing holder, and then pass
the inner cable through the cable adjusting bolt and then
through the hole in the inner cable fixing bolt.
holder
Cable adjusting bolt
Should be
20 — 22 mm
Check that both ends of the outer casing are securely
"inserted into the cable adjusting bolts of both the brake
lever and brake arm.
Cable adjusting bolt
Both ends of the outer casing
should be securely inserted.
Cable adjusting bolt
Push the link back until it stops. Then, while pulling the
"inner cable to apply the full amount of tension to the
cable, tighten the inner cable fixing nut.
Tightening torque:
6 — 8 Nm {52 — 69 in. Ibs.)
ZEN
0
7
17 7 NA Link
Uo)
Ç y 0 | 3 2 | While
“le! Tighten — / pushing
Е, ) Fu = - the link
——— = ers EP TR gent
= ORSON | | ee
Inner cable fixing nut = A
"oh,
2 Pull EE (+
[>
Note:
Set the inner cable so that it
passes below the 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 10 times as far as the grip in order to run in the
brake cable.
Note:
If the brake cable is not run in, it will need to be
adjusted again after only a short period of use.
Depress about
10 times
2 There are two methods of adjusting the brake cable: the
“one below is for use when readjusting just the brake
cable, and the other one is for use when replacing the
brake unit with a new unit.
( When readjusting )
Turn the cable adjusting bolt so that there is about
15 mm of play in the brake lever.
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.
nn
(_ When replacing the brake unit )
Turn the cable adjusting bolt to align the setting mark on
the brake arm with the setting mark on the link.
ANNE №)
7
- 1
E —
== “a Link
Brake arm —
Cable adjusting
These setting marks are guides for
adjusting when the brake unit is being
replaced with a new unit, and cannot
be used again once the brakes
themselves have been used.
After depressing the brake lever 5
“to check the braking
performance, secure the cable
adjusting bolt with the cable
adjusting nut.
Tightening torque:
1-2 Nm
‚ {9 - 17 п. 163.}
Cable adjusting nut
Replacement of the freewheel body
After removing the hub axle, remove the freewheel body
fixing bolt (within the freewheel body), and then replace the
freewheel body.
Note: Do not attempt to disassemble the freewheel body,
because it may result in a malfunction.
Freewheel body Freewheel body fixing bolt
Disassembly
Assembly
Freewheel body washer
— 10 mm
‘Tightening torque: | Allen key
35 - 50 Nm (304 — 434 In. Ibs.) (TL-WR37)
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.
Please note: Specificalions are subject to change for improvement without notice. (English)
SHIMANO
SHIMANO AMERICAN CORPORATION
One Holland Irvine CA 9261B U.S A. Phone 714-951-5003
SHIMANO EUROPA
Industrieweg 24 NL-B071 CT Nunspeet, Holland Phone 31-3412-72222
SHIMANO INC.
3-77 Oimatsucho, Sakai, Osaka, Japan Phone 0722-23-3243
CAY, These sevice instructions are
ES printed on recycied paper and
can be recycled again
© Apr. 1998 by Shimano Ine. PIT. SZK Printed in Japan
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