SI-34R0B
SG-8R20
SG-8R25
CJ-8S20
Left
Fork end
Non-turn washer
Reversed
Standard
5R / Yellow
6R / Silver
5L / Brown
6L / White
Mark / Color
Size
Right
7R / Black
7L / Gray
Reversed
(full chain case)
5R / Yellow
= 0
= 0
5L / Brown
7R
CJ-8S20
JAPAN
LOCK
CJ-8S20
JAPAN
LOCK
CJ-8S20
JAPAN
CJ-8S
20
JAP
AN
LOCK
6R
CJ-8S20
JAPAN
LOCK
CJ-8S
20
JAPAN
LOCK
7R
GREASE
7R
CJ-8S20
JAPAN
LOCK
CJ-8S20
JAPAN
Right side of
the hub body
3.
1.
1.
2.
General Safety Information
WARNING
– To avoid serious injuries:
NOTE:
You can shift gears while pedaling, but on rare occasions
the pawls and ratchet inside the hub may produce some
noise afterwards as part of normal gear shifting operation.
The CJ-8S20 cassette joint should only be used with
sprockets from 16T to 23T.
If the wheel becomes stiff and difficult to turn, you should
lubricate it with grease.
Do not apply any grease to the inside of the hub,
otherwise the grease will come out again.
You should periodically wash the sprockets in a neutral
detergent and then lubricate them again. In addition,
cleaning the chain with neutral detergent and lubricating it
can be a effective way of extending the useful life of the
sprockets and the chain.
If the chain keeps coming off the sprockets during use,
replace the sprockets and the chain.
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
adjustment, please contact the place of purchase.
When securing the brake arm to the frame, be sure to
securely tighten the clip screw and clip nut to the
specified tightening torque. Use lock nuts with nylon
inserts (self-locking nuts) for the clip nut. It is
recommended that standard Shimano parts be used for
the clip screw, clip nut and brake arm clip. If the clip nut
comes off the brake arm, or if the clip screw or brake arm
clip becomes damaged, the brake arm may rotate on the
chainstay and cause the handlebars to jerk suddenly, or
the bicycle wheel may lock and the bicycle may fall over,
causing serious injury.
When installing the hub to the frame, be sure to install
the correct non-turn washers to the left and right sides,
and securely tighten the hub nuts to the specified
torques. If the non-turn washers are installed to one side
only, or if the hub nuts are not tightened sufficiently, the
non-turn washer may fall out, which could cause the hub
axle to rotate and the cassette joint to turn. This may
then cause the handlebars to be accidentally pulled by
the shifting cable, and an extremely serious accident
could result.
Obtain and read the service instructions carefully prior to
installing the parts. Loose, worn, or damaged parts may
cause serious injury to the rider.
We strongly recommend only using genuine Shimano
replacement parts.
Check that the wheels are fastened securely before
riding the bicycle. If the wheels are loose in any way,
they may come off the bicycle and serious injury may
result.
Read these Technical Service Instructions carefully, and
keep them in a safe place for later reference.
Technical Service Instructions
Be sure to read these service instructions in conjunction
with the service instructions for the Inter-M Brake and the
Inter-8 shifting lever before use.
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.
Jul. 2003 by Shimano Inc. PIT. SZK. Printed in China
C
One Holland Irvine CA 92618 U. S. A. Phone 9 4 9 - 9 5 1 - 5 0 0 3
Industrieweg 2 4 NL- 8 0 7 1 CT Nunspeet‚ Holland Phone 3 1 - 3 4 1 - 2 7 2 2 2 2
3 - 7 7 Oimatsucho‚ Sakai‚ Osaka‚ Japan Phone 0 7 2 - 2 2 3 - 3 2 4 3
Please note: Specifications are subject to change for improvement without
notice. (English)
When installing the brake arm clip, securely
tighten the clip screw while holding the clip nut
with a 10 mm spanner.
Note:
After installing the brake arm clip, check that the
clip screw protrudes about 2 – 3 mm from the
surface of the clip nut.
Clip nut
Brake arm
Brake arm clip
Clip screw
(M6 16 mm)
Take up the slack in the chain and secure the wheel to
the frame with the cap nuts.
2 – 3 mm
Non-turn washer
Cap nut
4.
5.
Tightening torque:
2 – 3 Nm {17 – 26 in. lbs.}
Tightening torque:
30 – 45 Nm
{260 – 390 in. lbs.}
Fix the brake arm of the Inter-M brake securely to the
chainstay with the brake arm clip.
Brake arm clip
Chainstay
Brake arm
Note:
When installing a part such as a mudguard stay to
the hub axle, install in the order shown in the
illustration below.
Non-turn washer
Washer
Cap nut
Carrier stay
Mudguard stay
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.
Install the brake arm of the Inter-M brake to the
chainstay with the brake arm clip, provisionally tighten
the clip screw and clip nut, and then tighten the brake
unit fixing nut.
Tightening torque:
20 – 25 Nm {174 – 217 in. lbs.}
Brake unit fixing nut
Brake arm clip
Chainstay
Brake arm
3.
Note:
If the brake arm is in the incorrect position as
shown in the illustration so that it cannot be
provisionally installed to the chainstay, loosen the
brake unit fixing nut and turn the brake arm. Then,
after provisionally securing the brake arm to the
chainstay, tighten the brake unit fixing nut.
Cassette joint
Groove of fork end
Chainstay
Non-turn
washer
(for right side)
Installation of the hub to the frame
Mount the chain on the sprocket, and then set the hub
axle into the fork ends.
Hub axle
Fork end
The projecting parts should be
on the fork end side.
Install the non-turn washers so that the
projecting parts is securely in the fork end
grooves on either side of the hub axle.
Different types of left and right non-turn washers
are available for use with standard and reversed
fork ends. Use whichever non-turn washers are
suitable.
Place the non-turn washers onto the right side and left
side of the hub axle. At this time, turn the cassette joint
so that the projecting parts of the non-turn washers fit
into the grooves of the fork ends. If this is done, the
cassette joint can be installed so that it is almost parallel
to the chainstay.
Mark
Non-turn washer (for left side)
Cassette joint fixing ring
Cassette joint
fixing ring
Cassette joint pulley
Align the
yellow marks
to install.
Install the driver cap to the driver on the right side of the
hub body.
2.
Turn the cassette joint pulley in the direction of the
arrow in the illustration to align the red marks on the
pulley and the bracket. With the cassette joint in this
condition, install it so that the red mark on the
cassette joint is aligned with the red mark on the right
side of the hub body.
Pulley
Bracket
Cassette joint
Driver cap
Driver cap
Driver
Should be aligned
Note the
direction
Secure the cassette joint to the hub with the cassette
joint fixing ring. When installing the cassette joint fixing
ring, align the yellow mark with the yellow mark on
the cassette joint pulley, and then turn the cassette joint
fixing ring 45
°
clockwise.
Installation of the cassette joint to
the hub
Fit the cassette joint
bracket securely.
Turn 45
°
Align the red
marks to install.
Align the red
marks to install.
Inter-8 Hub
Cassette joint
20
38
