Shimano BR-7700 Caliper Brake Service Instructions

 /\ 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 pres-
sure 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 SI-BFAOA
BR-7700
Before use, read these instructions carefully, and follow them for correct use.
Caliper Brake
In order to realize the best performance, we recommend that the following com-
bination be used.
Series DURA-ACE
Brake lever ST-7700 / BL-7402
Caliper Brake BR-7700
Brake cable = SHIMANO DUA/ACE
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.
The position at which the mark on the upper part of the brake arm is
facing directly upward is the quide for the installation position.
5 mm Allan key
Tightening torque:
_ 8- 10 Nm {69 — 87 In. ibs.}
The usual position during installation is when the
lower part of the centering-adjustment bolt's =)
head is flush with the surface of the brake body. Da
2 Brake shoe setting position
4 mm Allen key
Tightening torque:
. 5-7 Nm (43 - 61 In. Ibs.)
"Direction of rim rotation
CHA 5
NZ
3, Cable connection
Set the quick lever to the closed position; then adjust the shoe clearance (as
shown in the illustration below) and secure the cable.
(_ Cable bolt tightening torque: 6 — 8 Nm (52 — 69 In. Ibs.} )
4. Centering of the brake shoe
Make a minor adjustment by using the centering-adjustment bolt.
Quick lever
С) e
@ Ts M
5, Readjustment of the shoe clearance
Turn the cable-adjustment nut to readjust the shoe clearance.
Cable-adjusiment nul
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.
E
Depress about
10 times
Replacement of the cartridge shoe
1 Remove the set screw.
s———— 2 mm Allen key
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 screw hole
positions.
[ Fortheleft | [
| Same at front and rear | | Same at front and rear |
Shoe Shoe
—
IV
3
Sel screw
For the right |]
Shoe holder Shoe holder
=
Shoe
insertion
direction
Set screw
4 Tighten the set screw.
( Tightening torque: 1 - 1.5 Nm (9 — 13 In. Ibs.) >)
Please note: Specifications are subject to change for improvement without nolice. (English)
SHIMANO
SHIMANO AMERICAN CORPORATION
One Shimano Drive, PO. Box 19615, Irvine, Calhfornia US À 92713-9615 Phone 714-951-5093
SHIMANO EUROPA
lndustrioweg 24 NL-8071 CT Nunspeel, Halland Phone 31-3412-72222
SHIMANO INC.
3:77 Cimalsucho, Sakai, Osaka, Japan Phone 0722-23-3243
These service instruclions are
e printed on recycled paper and
can be recycled again.
© Aug. 1996 by Shimano Inc. PIT. S2K, Printed in Japan