AN WARNING
lt is important to completely understand the operation of your
bicycle's brake system. Improper use of your bicycie'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.
The M739 brake system is equipped with adjustment blocks in the
wire hooking unit of the ST-M739 / BL-M739 brake levers which
allows the rider to change the relationship between the brake input
and output. If the adjustment blocks are removed, the braking force
will be dramatically increased, so that a high level of braking
performance can be achieved from only a small amount of lever
movement. Accordingly, normal braking operation may cause a
greater-than-expected amount of braking force to be applied, which
could make the bicycle fall forward, causing serious injury to the
rider. To avoid this, please read the following instructions thoroughly
before removing the adjustment blocks.
After removing the adjustment blocks, make
sure that you are completely used to the new
braking characteristics before riding the bicycle,
otherwise the bicycle might fall forward if you
have to apply the brakes suddenly, such as
when a vehicle appears.
1) With no adjustment blocks removed (standard
specifications for shipment)
2 adjustment blocks
2) With one adjustment block removed
An ample degree of braking force can be obtained from a small
amount of brake lever input, to provide a high level of brake
performance. However, if the brakes are operated suddenly,
there is the danger that the bicycle may fall forward. After
removing one of the adjustment blocks, first ride the bicycle at a
speed of less than 6 mph (10 km/h) while applying the brakes
repeatedly in order to get a feel for the difference in braking
characteristics before riding at higher speeds. Beginners should
be particularly careful.
1 adjustment block
3) With two adjustment blocks removed
An ample degree of braking force can be obtained from an even
smaller amount of brake lever input than in 2) above, to provide
the highest level of brake performance.
However, because the braking force is even more sensitive to
the amount of lever input than in 2), be sure to practice using the
brakes as described above. Beginners or those who are not fully
confident should not use the brakes in this configuration.
No adjustment block |
* Use the BR-M739 V-brake with SERVO WAVE
ACTION and adjustable V-brake-compatible
levers such as the BL-M739/ST-M739/BL-M950/
ST-M950/ST-M951/BL-M600/BL-M601 brake
levers.
SERVICE INSTRUCTIONS
Multi-Condition
Brake System
Before use, read these instructions carefully, and follow them for correct use.
SI-B350F
Multi-Condition Brake System
By providing superior wet weather braking performance (control
and modulation), braking performance will not vary in a multitude of
conditions when using this brake system
In order to realize the best performance, we recommend that the fol-
lowing combination be used
Series DEORE XT
Brake lever ST-M739 / BL-M739
V-brake = qj. _ BR-M739 =
Brake cable BE suman Ml svatem
NOTE:
e By using these parts as a set, the optimum efficiency of the Multi-
Condition Brake System can be realized
e For any questions regarding methods of handling or maintenance,
please contact the place of purchase
Installation of the brake lever
Move lever (A) so that the clamp bolt can be seen, and then use a 5
mm Allen key to install the brake lever,
5 mm Allen key
En torque:
6 — 8 Nm {52 - 69 In. Ibs.)
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. lbs.)
5 mm Allen key
Washer
ring hol |
Spring hole Link fixing boll
| Stopper pin
2 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 38 mm or more.
EN
A a .
6 mm washer B 3 mm washer B
Shoe fixing nut
=r" Fe
=p
Washer A | Washer A
Shoe fixing link
3 While holding the shoe against the rim, tighten the shoe fixing nut
(rae torque: )
6 — 8 Nm {52 — 69 in. ibas.)
5 mm Allen key
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.
FUT torque: »
6 — 8 Nm (52 — 69 In. Ibs.}
Inner cable lead 5 mm Allen key
—
5 Adjust the balance with the spring tension adjustment screws
Spring tension
adjustment screw
Spring tension
adjustment screw
6 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
Replacement of the cartridge shoe
1 Remove the shoe fixing pin.
3 There are two different types of shoe and shoe holder to be used
" in the left and right positions respectively. Slide the new shoes into
the grooves on the shoe holders while taking note of the correct
directions and pin hole positions
[ Fortheleft | [ Fortheright |
| Same at front and rear | | Same at front and rear |
Front
Shoe
Shoe holder
| Shoe holder
© za EZ
Im
>} rn CE
Shoe fixing pin
Shoe fixing pin
Insertion of shoe fixing pin is very critical to keep shoe properly
fixed in place.
Please note: Specifications are subject to change for improvement withoul notice. (English)
SHIMANO
SHIMANO AMERICAN CORPORATION
One Shimano Drive, P.O Box 19615 Irvine, California U S A 92623-9615 Phone 714-951-5002
SHIMANO EUROPA
Industneweg 24 NL-8071 CT Nunspecl, Holland Phone 31-3412:72222
SHIMANO INC.
3-77 Oimalsucho Sakai, Osaka, Japan Phane 0722-23-3241
These service Inalruclions are
q & prinled on recycled paper and
can be recycled again
© Aug. 1997 by Shimano Inc. PIT. IZM Pninled in Japan
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