Shimano ALFINE CJ-8S20 - TECHNICAL, ALFINE CS-S500 - TECHNICAL, ALFINE SG-S500 - TECHNICAL, Alfine SG-S500, Alfine CS-S500 Service Instructions Manual

CJ-8S20

JAPAN

LOCK

7R

Note the
direction

CJ-8S20

JAPAN

LOCK

6R

CJ-8S20

JAPAN

LOCK

7R

CJ-8S20

JAPAN

LOCK

7R

CJ-8S20

JAPAN

LOCK

CJ-8S20

JAPAN

LOCK

CJ-8S20

JAPAN

LOCK

CJ-8S20

JAPAN

LOCK

CJ-8S20

JAPAN

Tightening torque:
30 – 45 N·m
{260 – 390 in. lbs.}

Left

Dropouts

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

The projecting parts should be on the
dropouts side.

Install the non-turn washers so that the
projecting parts is securely in the dropouts
grooves on either side of the hub axle.

Use whichever non-turn washers match the
shape of the dropouts. Different non-turn washers
are used at the left and right sides.

Mark

Vertical

8R/ Blue

8L/ Green

20

38

= 60 – 90

CJ-8S20

JAPAN

Right side of
the hub body

Cassette joint fixing ring

Cassette joint
fixing ring

Cassette joint pulley

Align the
yellow marks
to install.

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

Should be aligned

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.

Fit the cassette joint
bracket securely.

Turn 45

°

Align the red
marks to install.

Align the red
marks to install.

2.

3.

Install the driver cap to the driver on the right side of the
hub body.

1.

Dropout

Chain tensioner

Hub axle

SI-35Z0C

SG-S500
CS-S500
CJ-8S20

Driver cap

Driver cap

Driver

The method of installing the hub to the frame is the
same when the chain tensioner is being used and when
it is not being used.

Cassette joint

Groove of dropout

Chainstay

Cap nut

Non-turn washer

Non-turn
washer
(for right side)

Non-turn washer (for left side)

Non-turn washer

Washer

Carrier stay

Mudguard stay

Hub for Inter-8
Disc Brake

Sprocket with
Chain Guard

Cassette joint

Snap ring

Guard plate

CS-S500 sprocket

Driver

Driver

Chain guard

Right hand dust cap

Right hand
dust cap B

Right hand dust cap B

Cap nut

When not using the chain tensioner

When using the chain tensioner

Chain guard

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 using a chain tensioner, use the special CS-S500 18T
or 20T sprocket with chain guard. Do not use any other
types of sprockets, otherwise the chain may come off the
sprockets.

If the wheel becomes stiff and difficult to turn, you should
lubricate it with grease.

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 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 brake and the shifting
lever before use.

Install the chain guard to the right hand dust cap of the
hub body, and then install right hand dust cap B to the
driver.

Installation of the CS-S500
sprocket with chain guard

1.

Install the CS-S500 sprocket to the driver on the right
side of the hub body with the guard plate facing
outward, and secure it in place with the snap ring.

2.

Note the
direction

Installation of the cassette joint
to the hub

Installation of the hub to the frame

Mount the chain on the sprocket, and then set the hub
axle into the dropouts.

1.

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 dropouts. If this is done, the
cassette joint can be installed so that it is almost parallel
to the chainstay.

When using the chain tensioner, be sure to read these
service instructions in conjunction with the service
instructions for the CT-S500 chain tensioner.

2.

Take up the slack in the chain and secure the wheel to
the frame with the cap nuts.

3.

Note:

When installing a part such as a mudguard stay to
the hub axle, install in the order shown in the
illustration below.

Aug. 2006 by Shimano Inc. PIT. SZK. Printed in Japan

C

These service instructions are printed on recycled paper.

Please note: Specifications are subject to change for improvement without
notice. (English)

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.

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, Osaka 590-8577, Japan

Note:

When installing the hub to the frame, the chain
guard may come off, so check that the chain guard
is securely installed so that it will not come off.
If it is not fully installed, noise may be generated.

Dropout

Hub axle

Chain guard