A WARNING
It is important to completely understand the operation of your
bicycle's brake system. Improper use of your bicycle's brake sys-
tem 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.
Use the SB-C051/SB-C202/SB-C102/BL-M420 V-brake
compatible levers with BR-M420 V-brakes. If using the SB-C050/
BL-C050-L/SB-C201/SB-C101/BL-C101-L brake levers, use the
SM-PM40 power modulator with the V-brakes.
If the power modulator is not used, it may cause excessive braking
force to be applied when the brake lever is operated, or result in
an uneven cable stroke which can cause braking force to be
insufficient, which in turn could result in dangerous accidents.
The SB-C050/BL-C050-L/SB-C201/SB-C101/BL-C101-L brake
levers are equipped with a mode switching mechanism to make
them compatible with V-brakes with power modulator and
cantilever brakes and roller brakes.
If the incorrect mode is selected it may cause
either excessive or insufficient braking force to
occur, which could result in dangerous
accidents.
Be sure to select the mode in accordance with
the instructions given in the table below.
Mode position Applicable brake
V position
* V-brake (BR-M420)
with SM-PM40 power
modulator attached
The V indicates the mode position for
compatibility with V-brakes with
power modulator,
| C/R position |
* Cantilever brakes
* Roller brakes
The C indicates the mode position for
compatibility with cantilever brakes.
The R indicates the mode position for
compatibility with roller brakes.
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.
SERVICE INSTRUCTIONS SI-B700C
Brake System
Before use, read these instructions carefully, and follow them for correct use,
In order to realize the best performance, we recommend that the fol-
lowing combination be used.
SB-Cos1 SB-C050 / BL-C050-L
Brake lever SB-C202 /SB-C102 | SB-C201/SB-C101
BL-M420 BL-C101-L
BR-M42
Е BR-M420
V-brake BR-M420 with SM-PM40
with SM-PM40
Brake cable Ce === нны
| A CAUTION
The power modulator is a device that makes it easier to control
braking by increasing the cable stroke at the brake lever within a
certain constant range of braking force.
If the effective operating range of the power modulator will be
exceeded, the lever stroke and the brake will operate as a
normal V-brake (sensitive and powerful). In that case, the brakes
may operate more powerfully than intended and may cause the
wheel to lock up. Therefore it is essential that you fully
understand and test the performance of the power modulator
before use. The power modulator is not equipped with a
function to prevent the wheel from locking up.
Braking Performance Comparison
hs (ka)
3 w/o power
® modulator
® ff." Etiective
e +, operaling range of
= "| the power modulator
o Pis PTS I
© w/ power modulator
Cable stroke at brake lever =
NOTE:
e For maximum performance we highly recommend Shimano lubricants
and maintenance products.
e For any questions regarding methods of handling or maintenance,
please contact the place of purchase.
Installation of the brake lever
Use a 5 mm Allen key to install the brake lever.
С Tightening torque: 6 — 8 Nm {52 — 69 in. Ibs} )
»+——— 5 mm Allen key
CS |
©
Use a handlebar grip with a
maximum outer diameter of
32 mm.
Installation of the V-brake
1. Insert the stopper pin of the brake body into the center spring hole in
the frame mounting boss, and then secure the brake body to the
frame with the link fixing bolt.
Tightening torque:
5 — 7 Nm {43 — 61 in. Ibs.}
5 mm Allen key
Spring hole
à, While holding the shoe against the rim, adjust the amount of shoe
protrusion by changing over the washer B (6 mm or 3 mm) so that
dimension A is kept at 39 mm or more, (This also applies if the
SM-PM40 power modulator is being used.)
39 mm or more
6 mm washer B 3 mm washer B
Shoe fixing nut
| | 1
mE HD
Nor
| Washer
Washer A Washer A
Shoe fixing link
3. While holding the shoe against the rim, tighten the shoe fixing nut.
s——— 5 mm Allen key
Г )) Tightening torque:
<0 | 6-8 Nm {52-69 in. Ibs.}
4 Pass the inner cable through the inner cable lead, and after setting
so that the total of the clearances between the left and right shoes
and the rim is 2 mm, tighten the cable fixing bolt,
Tightening torque: )
6 — 8 Nm {52 — 69 in. Ibs.)
;
| + |ппег саЫе lead
=
еее ПИН
5 mm Allen key
==]
=>
Spring tension
adjustment scraw
Spring lension
adjustment scraw
_ Depress the brake lever about 10 times as far as the grip and check
that everything is operating correctly and that the shoe clearance is
correct before using the brakes.
Depress about
10 times
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 nole: Specificalions are subject to change for improvemenl wilhoul notice. (English)
SHIMANO”
SHIMANO AMERICAN CORPORATION
One Holland Irvine CA 92618 U.S.A. Phone 949-951-5003
SHIMANO EUROPA
Indusirieweg 24 NL-8071 CT Nunspeel. Holland Phone 31-341-272222
AY
SHIMANO INC. ES
3-77 Oimalsucho, Sakai, Osaka, Japan Phone 0722-23-3243
© May 2000 by Shimano Inc. PIT, IZM. Prinled in Malaysia
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