Shimano BR-6700 User Manual

Installation of the brake lever

1. Installation to the handlebar

Move the bracket cover forward, and then securely tightening
the mounting nut with a 5 mm Allen key.

Bracket cover

5 mm Allen key

Name plate

Cable hook

Outer casing

Outer casing

Inner cable drum

Mounting nut

Inner cable drum

Cable hook

General Safety Information

WARNING

• Improper use of your bicycle's brake system may result in a
loss of control or an accident, which could lead to a severe
injury. Because each bicycle may handle differently, be sure to
learn the proper braking technique (including brake lever
pressure and bicycle control characteristics) for your bicycle.
Consult your bicycle dealer and the bicycle's owners manual,
and practice your riding and braking technique.

• If the front brake is applied too strongly, the wheel may lock
and the bicycle may fall forward, and serious injury may result.

• Use the ST-6700/6703, BL-TT79 with the BR-6700. Do not use
the BR-6700 in combination with previous STI levers for road
riding or with the BL-R770/BL-R550 brake levers for flat
handlebars, otherwise the braking performance provided will
be much too strong.

• Securely tighten the caliper brake mounting nuts to the
specified tightening torque.

· Use lock nuts with nylon inserts (self-locking nuts) for nut­type brakes.

· For sunken nut type brakes, use sunken nuts of the
appropriate length which can be turned six times or more;
when re-installing, apply sealant (locking adhesive) to the nut
threads.

If the nuts become loose and the brakes fall off, they may get
caught up in the bicycle and the bicycle may fall over.
Particularly if this happens with the front wheel, the bicycle
may be thrown forward and serious injury could result.

• Brakes designed for use as rear brakes should not be used as
front brakes.

• Because of the characteristics of the carbon fiber material, you
must never modify the levers, otherwise the lever may break
and the brakes may no longer work as a result.

• Before riding the bicycle, check that there is no damage such
as carbon fiber peeling or cracking. If there is any damage,
replace with a new part immediately without trying to repair the
damage, otherwise the lever may break and the brakes may
no longer work as a result.

• Obtain and read the service instructions carefully prior to
installing the parts. Loose, worn or damaged parts may cause
the bicycle to fall over and serious injury may occur as a
result. We strongly recommend only using genuine Shimano
replacement parts.

• Be careful not to allow any oil or grease to get onto the brake
shoes. If any oil or grease do get on the shoes, you should
replace the shoes, otherwise the brakes may not work
correctly.

• Check the brake cable for rust and fraying, and replace the
cable immediately if any such problems are found. If this is not
done, the brakes may not work correctly.

• Always make sure that the front and rear brakes are working
correctly before you ride the bicycle.

• The required braking distance will be longer during wet
weather. Reduce your speed and apply the brakes early and
gently.

• If the road surface is wet, the tires will skid more easily. If the
tires skid, you may fall off the bicycle. To avoid this, reduce
your speed and apply the brakes early and gently.

• Read these Technical Service Instructions carefully, and keep
them in a safe place for later reference.

Note

• Use a soft cloth to clean the carbon fiber levers, and be sure
to moisten the cloth with neutral detergent before using it,
otherwise the lever material may become damaged and lose
its strength.

• Avoid leaving the carbon fiber levers in places where high
temperatures are present. Also keep them well away from fire.

• If using SHIMANO's road brake shoes in combination with
ceramic rims, the brake shoes will wear more quickly than
normal.

• If the brake shoes have worn down until the grooves are no
longer visible, they should be replaced.

• Different brake shoes have their own characteristics. Ask the
place of purchase for details when purchasing the brake
shoes.

• Parts are not guaranteed against natural wear or deterioration
resulting from normal use.

• For maximum performance we highly recommend Shimano
lubricants and maintenance products.

• For any questions regarding methods of handling or
maintenance, please contact the place of purchase.

– To avoid serious injuries:

When installing the components to carbon frame/handle bar
surfaces, verify with the manufacturer of the carbon frame/parts for
their recommendation on tightening torque in order to prevent over
tightening that can cause damage to the carbon material and/or
under tightening that can cause lack of fixing strength for the
components.

The correct way for clamp
washer (B) to face is so that the
small hollow on the surface is in
the top-left corner.

Series

ULTEGRA

In order to realize the best performance, we recommend
that the following combination be used.

One Holland, Irvine, California 92618, U.S.A. Phone: [phone]

Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: [phone]

3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan

* Service Instructions in further languages are available at :

http://techdocs.shimano.com

Please note: specifications are subject to change for improvement without notice.(English)
© Sep. 2010 by Shimano Inc. XBC IZM Pr inted in Japan.

Brake lever

ST-6700 / 6703, BL-TT79

Caliper Brake

BR-6700

Brake cable

2. Installation of the brake cable

Loosen the screw and remove the name
plate.

Pass the inner cable through as shown
in the illustration, and then set the inner
end cap into the cable hook.

Hollow

Tightening torque:

6 – 8 N·m {52 – 69 in. lbs.}

SI-8G60A-003-00

BR-6700

Caliper Brake

Technical Service Instructions

SI-8G60A-003

Outer casing

Tape

Note:

The BR-6700 allows the angle of contact between the shoe
and the rim (toe-in) to be adjusted. Adjusting the toe-in
makes it possible to obtain smoother braking operation.

Note:

Cut the cable at the length at which it is not pulled tight
when the handlebar is turned all the way to the left and
right.

3. Cable connection

Set the quick release lever to the closed position; then adjust
the shoe clearance (as shown in the illustration below) and
secure the cable.

4. Centering of the brake shoe

Make a minor adjustment by using the centering adjustment
bolt.

=

A B

1

2

1

1

2

2

+ =

3--4mm

A B

2. Brake shoe setting position

After adjusting the brake shoe position so that the shoe surface
and the rim surface are as shown in the illustration, tighten the
shoe fixing bolt.

4. Lever stroke adjustment (ST-6700/6703)

If you would like to make the lever stroke smaller, install the
accessory pad spacer. Check the brake operation while
adjusting.

3. Install the name plate.

Shoe fixing bolt

Pad spacer

Centering adjustment bolt

4 mm Allen key

3 mm Allen key

Quick release lever

Installation of the brake

1. Installation of the brake itself

Compress the arch‚ and set while the shoe is in firm contact
with the rim.

5 mm Allen key

Temporarily secure the outer casing to the handlebar (by using
tape or similar material).

Then wrap the handlebar with handlebar tape.

Open

Closed

5. Readjustment of the shoe clearance

Turn the cable adjustment nut to readjust the shoe clearance.

=

A B

4

3

4

3

+ =

3--4mm

A B

4

3

Cable adjustment nut

Direction of
rim rotation

Direction of
rim rotation

1 mm or more

Toe-in

0.5 mm

Tightening torque:

5 – 7 N·m {43 – 61 in. lbs.}

Tightening torque:

8 – 10 N·m {69 – 87 in. lbs.}

Cable bolt tightening torque:

6 – 8 N·m {52 – 69 in. lbs.}

The usual position during
installation is when the head
of the centering adjustment
bolt is as shown in the
illustration.

Tightening torque:

0.15 - 0.2 N·m {1.3 - 1.8 in. lbs.}

R55C3

R

FORWARD

R55C3

FORWARD

L

Tightening torque:

1 – 1.5 N·m {9 – 13 in. lbs.}

Replacement of the cartridge shoe

1. Remove the fixing bolt.

4. Tighten the fixing bolt.

Fixing bolt Fixing bolt

Shoe holder

Shoe

Shoe holder

6. Check

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

Shoe
insertion
direction

Front

For the left

Same at front and rear

For the right

Same at front and rear

Shoe

Front

2 mm Allen key

Fixing bolt

2. Remove the shoe by sliding it along the groove of the shoe

holder.

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 bolt hole positions.

Shoe

7. Arch spring tension adjustment

To increase the spring tension of the arch, hold the end of the
spring with pliers and turn the sleeve around to face the other
way.

Sleeve

To increase
the tension

Normal
tension