Technical Service Instructions

Rear Drive System

SI-6JJRC

General Safety Information

WARNING

• The ST-M760/ST-M765 DUAL CONTROL lever is used for both gear shifting and braking operations.

Make sure that you fully understand and are accustomed to the gear shifting and braking operations for your bicycle. Refer to the illustration for the method of operation.

• Braking can only be performed with the DUAL CONTROL lever. If you use the gear shifting release lever (Auxiliary release lever) for braking, the release lever may become damaged and you may lose control of the bicycle, which could result in an accident.

• If the internal unit of the DUAL CONTROL lever becomes damaged, the lever will move down from the normal lever position, and it may move to a position where braking is difficult to carry out. If this happens, you should stop riding the bicycle immediately.

• 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.

• 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 pins 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

Chain

9-speed super narrow chain such as

CN-7701 / CN-HG93

Reinforced connecting pin

6.5mm

may not be obtained, which could cause the chain to break or fall off.

8- / 7- / 6-speed narrow chain such as

CN-HG50 / CN-IG51

7.1mm

• 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

Silver

Black

Chain tool

TL-CN31 / TL-CN22

TL-CN31 / TL-CN22 and

TL-CN30 / TL-CN21

Reinforced Connecting Pin 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.

• Check that the tension of the chain is correct and that the chain is not damaged. If the tension is

End Pin Link Pin too weak or the chain is damaged, the chain should be replaced. If this is not done, the chain may break and cause serious injury.

• Use a front chainwheel which is compatible with 9-speed chains in conjunction with Shimano CN-7701,

CN-HG93 and CN-HG73 chains. If a chainwheel for an 8-speed chain or less is used, front chainwheel gear shifting problems may occur, or the chain pins might fall out, causing the chain to break.

• Obtain and read the service instructions carefully prior to installing the parts. Loose, worn, or damaged parts may cause injury to the rider. We strongly recommend only using genuine Shimano replacement parts.

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

Note

• If gear shifting operations do not feel smooth, wash the derailleur and lubricate all moving parts.

• If the amount of looseness in the links is so great that adjustment is not possible, you should replace the derailleur.

• You should periodically clean the derailleur and lubricate all moving parts (mechanism and pulleys).

• If gear shifting adjustment cannot be carried out, check the degree of parallelism at the rear end of the bicycle. Also check if the cable is lubricated and if the outer casing is too long or too short.

• If you hear abnormal noise as a result of looseness in a pulley, you should replace the pulley.

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

• Do not apply any lubricant to the inside of the hub, otherwise the grease will come out.

• 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.

• Adjust the RD-M760 reverse spring type rear derailleur from the low side.

• Use a frame with internal cable routing is strongly discouraged as it has tendencies to impair the SIS shifting function due to its high cable resistance.

• 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.

• Use an outer casing which still has some length to spare even when the handlebars are turned all the way

Group marks to both sides. Furthermore, check that the shifting lever does not touch the bicycle frame when the handlebars are turned all the way.

• Make sure that the gear shifting cable and the brake cable do not obstruct each other during braking operations. If they do obstruct, it may interfere with braking.

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Install the cables so that they still have some slack in them even when the handlebars are turned fully in either direction.

HYP

• A special grease is used for the gear shifting cable (SIS-SP41). Do not use DURA-ACE grease or other types of grease, otherwise they may cause deterioration in gear shifting performance.

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

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

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

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• If the brake fluid used in the oil disc brakes is of a type which tends to adhere to the plastic parts of the shifting lever, this may cause the plastic parts to crack or become discolored. Therefore, you should make sure that the brake fluid does not adhere to these plastic parts.

The mineral oil which is used in SHIMANO disc brakes does not cause cracking or discoloration if it adheres to plastic parts, but such parts should be cleaned with alcohol beforehand to prevent foreign particles from adhering.

• 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.

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

Series

DUAL CONTROL lever

Outer casing

XT

ST-M760 / ST-M765

Rear derailleur

Type

Freehub

Gears

Cassette sprocket

Chain

Bottom bracket guide

SIS-SP41

RD-M760

SGS / GS

FH-M760 / FH-M765

9

CS-M760

CN-HG93

SM-SP17 / SM-BT17

Specifications

Rear Derailleur

Model number

Type

Gears

Total capacity

Largest sprocket

Smallest sprocket

Front chainwheel tooth difference

Cassette sprocket tooth combination

Model number

CS-M760

Group name a

Q as

Gears

9

9

SGS

45T

34T

11T

22T

RD-M760

9

Tooth combination

11, 12, 14, 16, 18, 21, 24, 28, 32T

11, 13, 15, 17, 20, 23, 26, 30, 34T

Freehub

Model number

Gears

No. of spoke holes

GS

33T

34T

11T

22T

FH-M760 / FH-M765

9

36 / 32 / 28

These Service Instructions describe the operation method when using the ST-M765 / M760 DUAL CONTROL lever in combination with the RD-M760 reverse spring-type rear derailleur. If using in combination with a top normal-type derailleur, the operations and indicator displays will be reversed.

Operating the levers

■ Operating the brake lever ■ Gear shifting operation

The lever always returns to the initial position when it is released after shifting. When operating the lever, always be sure to turn the crank arm at the same time.

To shift from a large sprocket to a smaller sprocket

To shift one step only, press lever to the (1) position. To shift two steps at one time, press to the (2) position. A maximum two-step shift can be made in this manner.

Lever initial position

Adjusting the grip width

It is recommended that you adjust the grip widths of the levers to the most comfortable widths for gear shifting and braking.

1st joint

Approx.

2 mm

Lever end

To shift from a small sprocket to a larger sprocket

Press lever once to shift one step from a smaller to a larger sprocket.

Becomes wider

Becomes narrower

Becomes wider

Lever initial position

Auxiliary release lever

ST-M765

2 mm

Allen key

Becomes narrower

ST-M760

Installation of the rear derailleur

When installing, be careful not to let the B-tension adjustment screw come into contact with the dropout tab, otherwise deformation may result.

Do not remove the Pro-Set alignment block at this time.

Bracket spindle Tightening torque :

8 - 10 N·m {70 - 86 in. lbs.}

5 mm Allen key

B-tension adjustment screw

Dropout tab

Installation of the sprockets

(a

Q

)

For each sprocket, the surface that has the group mark should face outward and be positioned so that the wider part of each sprocket and the A part

(where the groove width is wide) of the freewheel body are aligned.

(as)

A ba ba ba ba ap ba T

T

T

1

T as

The groove is wide at one place only.

Wide part ac-14T ap b a ar ba

11

T a

Q

Lock ring

H

Y

P

15

T

Sprocket spacers

13T a

Lock ring spacer

Lock ring

Lock ring spacer

H

P ERG LID

E

• For installation of the sprockets, use the special tool (TL-LR15) to tighten the lock ring.

Tightening torque:

30 - 50 N·m {261 - 434 in. lbs.}

• To replace the sprockets, use the special tool (TL-LR15) and TL-SR20 to remove the lock ring.

Install the TL-SR20 to the largest sprocket.

Lock ring

Tool

(TL-SR20)

TL-LR15

Disassembly

Chain length on bicycles with rear suspension

The length of A will vary depending on the movement of the rear suspension. Because of this, an excessive load may be placed on the drive system if the chain length is too short. Set the length of the chain by adding two links to the chain when the rear suspension is at a position where dimension "A" is longest and the chain is on the largest sprocket and the largest chainring. If the amount of movement of the rear suspension is large, the slack in the chain may not be taken up properly when the chain is on the smallest chainring and smallest sprocket.

Largest sprocket

Chain

Largest chainring

A'

A

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

Installation of the lever

Use a handlebar grip with a maximum outer diameter of 32 mm.

Tightening torque :

6 - 8 N·m {53 - 69 in. lbs.}

In the case of carbon handlebars, it may be necessary to lower the tightening torque in order to prevent damage to the handlebar.

5 mm Allen key

Please consult the bicycle or handlebar manufacturer regarding the appropriate level of tightening torque for carbon handlebars.

SIS Adjustment

Installation of the chain

Install the chain with the Pro-Set alignment block still attached.

After installing, remove the Pro-Set alignment block.

Turn the crank arm to set the derailleur to the low position.

Pro-Set alignment block

1. Low adjustment

Turn the low adjustment screw so that the guide pulley moves to a position directly in line with the largest sprocket.

Largest sprocket

Guide pulley

2 1

1 2

Low adjustment screw

2. Top adjustment

Turn the crank arm while pulling the derailleur with your hand to move the derailleur to the top position, and then 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.

Turn the crank arm to set the derailleur to the low position.

1

Guide pulley

3. Connecting and securing the inner cable

Operate lever eight times or more, and check on the indicator that the lever is at the lowest position. Then remove the inner hole cover and connect the inner cable.

2

Outer line of smallest sprocket

1 2

Top adjustment screw

Inner cable

Tightening torque :

5 - 7 N·m {44 - 60 in. lbs.}

Lever

Inner hole cover

Install the inner hole cover by turning it as shown in the illustration until it stops.

Do not turn it any further than this, otherwise it may damage the screw thread.

Tightening torque :

0.3 - 0.5 N·m {3 - 4 in. lbs.}

Inner hole cover

Connect the inner cable to the derailleur as shown in the illustration.

Note: Be sure that the cable is securely in the groove.

Groove

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

Tightening torque :

5 - 7 N·m {44 - 60 in. lbs.}

Pull

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.

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

Outer end cap

The sealed cap with tongue and the rubber shield should be installed to the outer casing stopper of the frame.

Be careful not to bend

Sealed cap with tongue

Rubber shield

Rubber shield

* If the rear derailleur moves to a large degree, such as in bicycles with rear suspension, it is recommended that you replace the cap with the accessory aluminum cap.

Derailleur side

The end of the outer casing which has the aluminum cap should be at the derailleur side.

Aluminum cap

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

Largest sprocket sprocket as possible but not

2

2

Smallest sprocket 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

1

1 2

B-tension adjustment screw

5. SIS Adjustment

Push lever while turning the crank arm to move the derailleur to the largest sprocket. Then operate lever once to move the derailleur to the 2nd-gear sprocket. After this, operate lever just as far as the extent of play, and then turn the crank arm.

When changing to 3rd

2 3 When no noise is heard at all

2 3

Adjustment bolt 2 3 Adjustment bolt 2 3

Turn the cable adjustment bolt clockwise to tighten it until the chain returns to the 2nd sprocket.

* Turn the adjustment bolt together with the outer casing adjustment barrel cover.

Turn the cable adjustment bolt counterclockwise to loosen it until the chain touches a sprocket and generates noise.

* Turn the adjustment bolt together with the outer casing adjustment barrel cover.

Best setting

The best setting is when the cable adjustment bolt is tightened

(turned clockwise) until noise occurs without lever being operated, and then loosened (turned counterclockwise) 90 - 180 degrees from that point.

Operate lever to change gears, and check that no noise occurs in any of the gear positions.

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

Replacement of the freewheel body

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.

Freewheel body Freewheel body fixing bolt

10 mm Allen key

(TL-WR37)

Disassembly

Assembly

Tightening torque :

35 - 50 N·m {305 - 434 in. lbs.}

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.

One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003

Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222

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

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

© Jun. 2004 by Shimano Inc. XBC SZK Printed in Japan t