General Safety Information

WARNING

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

Chain

Reinforced connecting pin

Chain tool

9-speed super narrow chain such as

CN-7701 / CN-HG93

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

CN-HG50 / CN-IG51

6.5mm

7.1mm

Silver

Black

TL-CN32/TL-CN23

TL-CN32/TL-CN23

• 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

Reinforced Connecting Pin damaged if it is cut at a place where it has been joined with a reinforced connecting pin or an end pin.

End Pin Link Pin

• Be careful not to let the cuffs of your clothes get caught in the chain while riding, otherwise you may fall off the bicycle.

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

• Check that there are no cracks in the crank arms before riding the bicycle. If there are any cracks, the crank arm may break and you may fall off the bicycle.

• 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 that only genuine Shimano replacement parts be used.

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

Note

• In addition, if pedaling performance does not feel normal, check this once more.

• Check that there is no looseness in any joints or connections before riding the bicycle. (BB-FC,

FC-PD)

• Do not wash the bottom bracket with high-pressure jets of water.

• If you feel any looseness in the bottom bracket axle, the bottom bracket should be replaced.

• 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 wash the chainrings 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 chainrings and the chain.

• If the chain keeps coming off the chainrings during use, replace the chainrings and the chain.

• Apply grease to the bottom bracket before installing it.

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

• This front derailleur is for triple front chainwheel use only. It cannot be used with the double front chainwheel, as the shifting points do not match.

• When installing the top route type, choose a frame that has three outer casing holders as shown in the illustration at right.

• 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

Outer casing holders ensure that they slide properly.

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

• 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 Altus

Gears

Rapidfire Plus

Outer casing

Front derailleur

Front chainwheel

Bottom bracket

Chain

Bottom bracket cable guide

Right

Left

SIS 8-gears

SIS 3-gears

ST-EF50-L

SIS

FD-CT92-E

FC-TY40

BB-UN26-E

CN-HG50 / CN-HG40

SM-SP18 / SM-BT18

SIS 7-gears

SIS 3-gears

ST-EF50-L

SIS

FD-C051

FC-TX71

BB-UN26

CN-HG50 / CN-HG40

SM-SP18 / SM-BT18

Specifications

Front Derailleur

Model number

Applicable bottom bracket

Applicable front chainwheel

Applicable to both normal type and top route type

Top gear tooth

Front chainwheel tooth difference

Min. difference between top and intermediate

Front derailleur installation band diameter

Chainstay angle ( a )

Applicable chain line

S, M

66°- 69°

47.5 mm

50 mm

FD-CT92-E

BB-UN26-E

FC-TY40

X

42T

18T

8T

L

66°- 69°

47.5 mm

S, M

63°- 66°

47.5 mm

50 mm

FD-C051

BB-UN26

FC-TX71

X

48T

20T

10T

S, M, L

66°- 69°

47.5 mm

50 mm

Bottom Bracket

Model number

Stamped marking

Spindle length

Chain line

Applicable front chainwheel

Thread dimensions

BB-UN26-E

YL117

117 mm

47.5 mm

ZL122

122 mm

50.0 mm

FC-TY40

BC 1.37 X 24 T.P.I. (73 mm)

Chainwheel

Model number

Chainwheel tooth combination

Crank arm length

Pedal thread dimensions

FC-TY40

42-34-24T

FC-TX71

48-38-28T

170 mm

BC 9/16" x 20 T.P.I.

Installation band diameters:

S [ 28,6 mm ], M [ 31,8 mm ], L [ 34,9 mm ]

(FD-C051 : Use the adapter for S and M sizes.)

Chainstay angle

BB-UN26

D-NL

122.5 mm

47.5 mm

FC-TX71

BC 1.37 X 24 T.P.I. (68 mm)

Installation of the Front Derailleur,

Bottom Bracket and Front Chainwheel

< FD-CT92-E >

Use the special tools (TL-UN65 and TL-UN74-S) to install the bottom bracket

➀ and the front derailleur so that they face as shown in the illustration. Install the adapter

➁

, and then use the cotterless crank extractor (TL-FC10) to install the front chainwheel.

Front Derailleur

➂

Front Chainwheel

< FD-C051 >

Technical Service Instructions

Front Drive System

SI-6KV0B

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) © Jan. 2006 by Shimano Inc. XBC SZK Printed in Malaysia

Gear shifting operation

Both lever (A) and lever (B) always return to the initial position when they are released after shifting.

When operating one of the levers, always be sure to turn the crank arm at the same time.

To shift from a small chainring to a larger chainring

(Lever A)

Lever (A) initial position

When lever (A) is pressed once, there is a shift of one step from a small chainring to a larger chainring.

Example: from intermediate chainring to largest chainring.

To shift from a large chainring to a smaller chainring

(Lever B)

When lever (B) is pressed once, there is a shift of one step from a large chainring to a smaller chainring.

Example: from largest chainring to intermediate chainring.

Lever (B)

➁

Adapter

➀

Bottom Bracket

Adapter / bottom bracket tightening torque:

50 - 70 N·m {435 - 608 in. lbs.}

Front chainwheel tightening torque:

35 - 50 N·m {305 - 435 in. lbs.}

Adjust and then install the front derailleur as shown in the illustration. Do not remove the Pro-Set alignment block at this time.

Pro-Set alignment block

Gear teeth should come within this range

Pro-Set gauge

1 mm

3 mm

The level section of the chain guide outer plate should be directly above and parallel to the largest chainring. Secure using a 5 mm Allen key.

Tightening torque:

5 - 7 N·m {44 - 60 in. lbs.}

Chainwheel

(largest chainring)

Chain guide

Lever (B)

Chain length

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

Largest sprocket

Chain

Largest chainring

Cut off the excess length of inner cable and then install the inner end cap.

< FD-CT92-E > < FD-C051 >

5 mm allen key

Mounting the shifting lever

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

Tightening torque:

6 - 8 N·m {53 - 69 in. lbs.}

Tightening torque:

5 - 7 N·m {44 - 60 in. lbs.}

Note:

Pass the cable through as shown in the illustration.

After taking up the initial slack in the cable, re-secure to the front derailleur as shown in the illustration.

Normal type Top route type

Pull

Pull

5 mm Allen key

SIS adjustment

Be sure to follow the sequence described below.

1. Low adjustment

First remove the Pro-Set alignment block.

Next, set so that the clearance between the chain guide inner plate and the chain is 0-0.5 mm.

Pro-Set alignment block

3. Top adjustment

Set so that the clearance between the chain guide outer plate and the chain is 0-0.5 mm.

Chain position

Largest sprocket Smallest chainring

Chain guide inner plate

A

B A

Low adjustment screw

B

Chain

Chain position

Smallest sprocket Largest chainring

Chain

Top adjustment screw

Chain guide outer plate

4. Adjustment of the intermediate chainring

When carrying out adjustment, set the chain to the largest sprocket, and at the front, set the chain to the intermediate chainring. Adjust using the outer casing adjustment barrel so that the clearance between the chain guide inner plate and the chain is 0-0.5 mm.

2. Securing the inner cable

Operate lever (B) two times or more to set the lever to the lowest position.

Remove the screw, and then remove the cover.

Pull out the inner cable as shown in Figure, and then install the new inner cable.

Screw

Cover

Chain position

Largest sprocket

Intermediate chainring

A

Chain guide inner plate

B

Chain

Inner cable

Tightening torque:

0.3 - 0.5 N·m {3 - 4 in. lbs.}

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.

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

Outer end cap

Outer casing adjustment barrel

5. Troubleshooting chart

After completion of steps 1 - 4, move the shifting lever to check the shifting. (This also applies if shifting becomes difficult during use.)

If the chain falls to the crank side.

If shifting is difficult from the intermediate chainring to the largest chainring.

If shifting is difficult from the intermediate chainring to the smallest chainring.

If there is interference between the chain and the front derailleur inner plate at the largest chainring.

If there is interference between the chain and the front derailleur outer plate at the largest chainring.

If the intermediate chainring is skipped when shifting from the largest chainring.

If there is interference between the chain and front derailleur inner plate when the rear sprocket is shifted to the largest sprocket when the chainwheel is at the intermediate chainring position.

If the chain falls to the bottom bracket side.

Tighten the top adjustment screw clockwise (about 1/4 turn).

Loosen the top adjustment screw counterclockwise

(about 1/8 turn).

Loosen the low adjustment screw counterclockwise

(about 1/4 turn).

Tighten the top adjustment screw clockwise (about 1/8 turn).

Loosen the top adjustment screw counterclockwise

(about 1/8 turn).

Loosen the outer casing adjustment barrel counterclockwise (1 or 2 turns).

Tighten the outer casing adjustment barrel clockwise

(1 or 2 turns).

Tighten the low adjustment screw clockwise (about 1/2 turn).