Shimano SI-R917A Service Instructions

Installation of the rear derailleur

When installing, be careful that deformation is not caused by the B-tension adjustment screw coming into contact with the dropout tab.

Bracket spindle tightening torque:

8 - 10 Nm {70 - 86 in. lbs.}

Chain length

Add 2 links (with the chain on both the largest sprocket and the largest chainring)

Chain

Largest chainringLargest sprocket

Mounting the shifting lever

After removing the hub axle, remove the freewheel body fixing bolt (inside the freewheel body), and then replace the freewheel body.

Note: Do not attempt to disassemble the freewheel body, because it may result in a malfunction.

Replacement of the freewheel body

Freewheel body fixing bolt

10 mm Allen key (TL-WR37)

Freewheel body

Disassembly

Assembly

Tightening torque:

35 - 50 Nm {305 - 434 in. lbs.}

Freewheel body washer

FH-CT91

1. Top adjustment

Turn the top adjustment screw to adjust so that the guide pulley is in line with the outer line of the smallest sprocket when looking from the rear. After this, install the chain.

Adjustment

1 2

Largest

sprocket

Guide pulley

Low

adjustment screw

Connect the cable to the rear derailleur and, after taking up the initial slack in the cable, re-secure to the front derailleur as shown in the illustration.

Note: Be sure that the cable is

securely in the groove.

Groove

Pull

4. How to use the B-tension adjustment screw

Mount the chain on the smallest chainring and the largest sprocket, and turn the crank arm backward. Then turn the B-tension adjustment screw to adjust the guide pulley as close to the sprocket as possible but not so close that it touches. Next, set the chain to the smallest sprocket and repeat the above to make sure that the pulley does not touch the sprocket.

1 2

B-tension

ajustment screw

Largest

sprocket

Smallest sprocket

▲ mark

For each sprocket, the surface that has the group mark should face outward and be positioned so that the triangle (▲) mark on each sprocket and the A part (where the groove width is wide) of the freewheel body are aligned.

The groove is wide

at one place only.

• For installation of the sprockets, use the special tool (TL-HG16) to tighten the lock ring.

Disassembly

TL-HG16

Tool (TL-SR20)

Lock ring

• To replace the sprockets, use the special tool (TL-HG16) and TL-SR20 to remove the lock ring.

Tightening torque:

30 - 50 Nm {261 - 434 in. lbs.}

Installation of the sprockets

Lock ringSprocket spacers

(1.0mm)

The 6 sprockets are secured by

means of rivets.

Checking the chain connection

For IG, chains, insert the chain gauge (TL-CN24) into the inner link which is next to the chain connecting pin to check that the inner link width is correct. Check that the connecting pin pro-trudes past the outer link by the same amount on both sides, and that the amount of protrusion is 0.2 mm or more.

SHIMANO JAPAN

CHAIN GAUGE

1=2.38mm

TL-CN24

2.38mm

A, B Q 0.2mm

Chain gauge

TL-CN24

Inner link

Connecting pin

Outer link

Connecting pin

SHIMANO JAPAN

CHAIN GAUGE

1=2.38mm

TL-CN24

SHIMANO JAPAN

CHAIN GAUGE

1=2.38mm

TL-CN24

Correct Incorrect

Inserting the inner cable

Insert the inner cable into the outer casing from the end with the marking on it. Apply grease from the end with the marking in order to maintain cable operating efficiency.

Marking

Cutting the outer casing

When cutting the outer casing, cut the opposite end to the end with the marking. After cutting the outer casing, make the end round so that the inside of the hole has a uniform diameter.

3. Low adjustment

While turning the front chainwheel, operate the lever to shift to the lowest gear. Turn the low adjustment screw so that the guide pulley moves to a position directly in line with the largest sprocket.

This service instruction explains 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.

Please note: specifications are subject to change for improvement without notice. (English) © Jun. 2002 by Shimano Inc. XBC SZK Printed in Singapore

77 Oimatsu-cho 3-cho Sakai Osaka 590-8577 Japan

One Holland Irvine CA 92618 U.S.A. Phone 949-951-5003

Industrieweg 24 NL-8071 CT Nunspeet Holland Phone 31-341-272222

Tightening torque:

5 - 7 Nm {44 - 60 in. lbs.}

5 mm Allen key

Dropout tab

B-tension adjustment screw

Frame

Bracket bolt

Bracket nut

Bracket

Direct-mount type

Push in and tighten

Tightening torque:

8 - 10 Nm

{70 - 86 in. lbs.}

Tightening torque:

3 - 4 Nm

{26 - 34 in. lbs.}

5 mm Allen Key

Shoud be touching

Bracket type

<RD-MR40>

To install

To disassemble

Freewheel removal tool

TL-FW30

Tightening torque:

30 Nm {260 in. lbs.}

Installation of the freewheel

General Safety Information

WARNING

• If it is necessary to adjust the length of the chain due to a change in the number of sprocket teeth, make the cut at some other place than the place where the chain has been joined using a reinforced connecting pin or an end pin. The chain will be damaged if it is cut at a place where it has been joined with a reinforced connecting pin or an end pin.

• Use neutral detergent to clean the chain. Do not use alkali-based or acid based detergent such as rust cleaners as it may result in damage and/or failure of the chain.

• Use the reinforced connecting pin only for connecting the narrow type of chain.

• There are two different types of reinforced connecting pin available. Be sure to check the

table below before selecting which pin to use. If connecting pins other than reinforced connecting pins are used, or if a reinforced connecting pin or tool which is not suitable for the type of chain is used, sufficient connection force may not be obtained, which could cause the chain to break or fall off.

Chain toolChain

9-speed super narrow chain

such as

CN-7701 / CN-HG93

8- / 7- / 6-speed narrow

chain such as

CN-HG50 / CN-IG51

Reinforced

connecting pin

TL-CN31/TL-CN22

TL-CN31/TL-CN22 and

TL-CN30/TL-CN21

6.5mm

7.1mm

Silver

Black

End Pin Link Pin

Reinforced Connecting Pin

• Obtain, read and carefully service instructions when installing parts. A loose, worn, or damaged parts may cause injury to the rider. We strongly recommend that only genuine Shimano replacement parts be used.

• Keep these Technical Service Instructions in a safe place.

Note

• Always be sure to use the sprocket set bearing the same group marks. Never use in combination with a sprocket bearing a different group mark.

• Because the high cable resistance of a frame with internal cable routing would impair the SIS function, this type of frame should not be used.

• Use an outer casing which still has some length to spare even when the handlebars are turned all the way to both sides. Furthermore, check that the shifting lever does not touch the bicycle frame when the handlebars are turned all the way.

• Grease the inner cable and the inside of the outer casing before use to ensure that they slide properly.

• Operation of the levers related to gear shifting should be made only when the front chainwheel is turning.

• For smooth operation, use the specified outer casing and the bottom bracket cable guide.

• The SC-C050 speedmeter, SC-C051 odometer and SC-C052 clock and stopwatch are

available as separate items. Please ask your bicycle dealer for further details.

• 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 installation, adjustment, maintenance or operation, please contact a professional bicycle dealer.

Group marks

Group name

Tooth combination

11, 13, 15, 17, 20, 23, 26, 30T

11, 13, 15, 17, 20, 23, 26, 34T

14, 16, 18, 20, 22, 24, 34T

14, 16, 18, 20, 22, 24, 28T

Model number Sprockets

8CS-HG50-8I

8CS-HG40-8I

7MF-HG40-7

7MF-HG37

Cassette sprocket tooth combination

Tourney 40

SB-C055A-7R

SIS

RD-MR40-7

MGS

—

MF-HG40-7

Cassette sprocket

Chain

Series

REVOSHIFT

Outer casing

Rear derailleur

Type

Freehub

Sprockets

Bottom bracket cable guide

Altus

SB-C055A-8R

SIS

RD-CT95

Smart Cage

FH-CT91

CS-HG50-8I CS-HG40-8I

CN-HG50 / CN-UG50

SM-SP18 / SM-BT18

RD-MR40-7

40T

MGS

34T

13T

20T

FC-TY33A (48-38-28T)

Applicable front chainwheel (chainring tooth configuration)

Model number RD-CT95

43T

Smart cage

34T

11T

20T

FC-CT92 (42-34-24T)

Type

Total capacity

Largest sprocket

Smallest sprocket

Front chainwheel tooth difference

Technical Service Instructions SI-R917A

Rear Drive System

Before use, read these instructions carefully, and follow them for correct use.

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

Specifications

Rear Derailleur

Attach the same outer end cap to the cut end of the outer casing.

Outer end cap

➁ ➂➀

2. Connecting and securing the inner cable

Replace the inner cable by carrying out steps ➀to ➂as shown in the illustrations.

Tightening torque:

6 - 8 Nm {53 - 69 in. lbs.}

5 mm allen key

1 2

Guide pulley

Outer line of smallest sprocket

Top adjustment

screw

Gear shifting operation

Installation of the switch

Switch

Switch cap

Remove the switch cap and install the switch as shown in the illustration.

Pedaling

becomes heavier

Pedaling

becomes lighter

5. SIS Adjustment

Operate the shifting lever several times to move the chain to the 2nd sprocket. Then, while pressing the lever just enough to take up the play in the lever, turn the crank arm.

When shifting to 3rd

Tighten the outer casing adjustment barrel until the chain returns to the 2nd sprocket. (clockwise)

Best setting

The best setting is when the shifting lever is operated just enough to take up the play and the chain touches the 3rd sprocket and makes noise.

* Return the lever to its original position (the position where the lever is at

the 2nd sprocket setting and it has been released) and then turn the crank arm clockwise. If the chain is touching the 3rd sprocket and making noise, turn the outer casing adjustment barrel clockwise slightly to tighten it until the noise stops and the chain runs smoothly.

When no sound at all is heard

Loosen the outer casing adjustment barrel until the chain touches the 3rd sprocket and makes noise. (counter clockwise)

Outer casing adjustment barrel

For the best SIS performance, periodically lubricate all power-transmission parts.