Contents

Shimano Deore XT FD-M8025 Front Derailleur Dealer's Manual PDF

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1 of 45

Summary of Content for Shimano Deore XT FD-M8025 Front Derailleur Dealer's Manual PDF

(English) DM-FD0003-06

Dealer's Manual

ROAD MTB Trekking

City Touring/ Comfort Bike

URBAN SPORT E-BIKE

Front derailleur

XTR FD-M9000 FD-M9020 FD-M9025

DEORE XT FD-M8000 FD-M8020 FD-M8025

DEORE FD-M612 FD-M617 FD-M618

SLX FD-M672 FD-M677

2

CONTENTS

IMPORTANT NOTICE .............................................................................................. 3

TO ENSURE SAFETY ............................................................................................... 4

LIST OF TOOLS TO BE USED .................................................................................. 7

INSTALLATION ....................................................................................................... 9 Installation of the front derailleur ..............................................................................................................9

Installation of the front derailleur (Front triple) .......................................................................................9

Installation of the front derailleur (Front double) ...................................................................................13

ADJUSTMENT ...................................................................................................... 23 Installing the cable and adjusting shifting operation (Front triple) .......................................................23

Installing the cable and adjusting shifting operation (Front double) ....................................................30

MAINTENANCE .................................................................................................... 39 Replacing the chain catcher ......................................................................................................................39

Replacing rubber pad A .............................................................................................................................41

Replacing rubber pad B .............................................................................................................................43

Replacing the cover with tongue ..............................................................................................................44

3

IMPORTANT NOTICE

IMPORTANT NOTICE

This dealers manual is intended primarily for use by professional bicycle mechanics. Users who are not professionally trained for bicycle assembly should not attempt to install the components themselves using the dealers manuals. If any part of the information on the manual is unclear to you, do not proceed with the installation. Instead, contact your place of purchase or a local bicycle dealer for their assistance.

Make sure to read all instruction manuals included with the product.

Do not disassemble or modify the product other than as stated in the information contained in this dealers manual.

All dealers manuals and instruction manuals can be viewed on-line on our website (http://si.shimano.com).

Please observe the appropriate rules and regulations of the country, state or region in which you conduct your business as a dealer.

For safety, be sure to read this dealers manual thoroughly before use, and follow it for correct use.

The following instructions must be observed at all times in order to prevent personal injury and physical damage to equipment and surroundings. The instructions are classified according to the degree of danger or damage which may occur if the product is used incorrectly.

DANGER

Failure to follow the instructions will result in death or serious injury.

WARNING

Failure to follow the instructions could result in death or serious injury.

CAUTION

Failure to follow the instructions could cause personal injury or physical damage to equipment and surroundings.

4

TO ENSURE SAFETY

TO ENSURE SAFETY

WARNING

Be sure to follow the instructions provided in the manuals when installing the product. It is recommended to use genuine Shimano parts only. If parts such as bolts and nuts become loose or damaged, the bicycle may suddenly fall over, which may cause serious injury. In addition, if adjustments are not carried out correctly, problems may occur, and the bicycle may suddenly fall over, which may cause serious injury.

Be sure to wear safety glasses or goggles to protect your eyes while performing maintenance tasks such as replacing parts.

After reading the dealers manual thoroughly, keep it in a safe place for later reference.

Be sure to also inform users of the following: Be careful not to let the hemming of your clothes get caught in the chain while riding. Otherwise you may fall off the bicycle.

NOTE

Be sure to also inform users of the following: If gear shifting operations do not feel smooth, wash the derailleur and lubricate all moving parts.

When the chain is in any of the positions shown in the illustration, the chain may come into contact with the front chainring or front derailleur and generate noise. If noise is a problem, shift the chain onto the next largest rear sprocket or the one after if the chain is in the position shown in Figure 1. Shift the chain onto the next smallest sprocket or the one after if it is in the position shown in Figure 2.

Figure 1 Figure 2

Double

(For 10-speed)

Double

(For 11-speed) Triple

Front chainring

Rear sprocket

5

TO ENSURE SAFETY

For Installation to the Bicycle, and Maintenance: A triple front derailleur cannot be used with a double crankset because the shifting points do not match. Similarly, a double front derailleur cannot be used with a triple crankset.

For frames with suspension, the chainstay angle will vary depending on whether the bicycle is being ridden or not being ridden.

When the bicycle is not being ridden and the chain is positioned on the largest chainring and on the smallest sprocket, the chain guide outer plate of the front derailleur may touch the chain.

Use an outer casing [OT-SP41] and a cable guide (SM-SP17/SP18) for smooth operation.

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

Products are not guaranteed against natural wear and deterioration from normal use and aging.

For maximum performance we highly recommend Shimano lubricants and maintenance products.

The actual product may differ from the illustration because this manual is intended mainly to explain the procedures for using the product.

LIST OF TOOLS TO BE USED

7

LIST OF TOOLS TO BE USED

LIST OF TOOLS TO BE USED

The following tools are needed for installation, adjustment, and maintenance purposes.

Tool Tool

2 mm hexagon wrench 8 mm hexagon wrench

4 mm hexagon wrench Hexalobular[#10]

INSTALLATION

9 To be continued on next page

INSTALLATION

Installation of the front derailleur

INSTALLATION

Installation of the front derailleur

NOTE

When installing components to a carbon frame/handlebar, check the tightening torque recommended by the carbon frame or component manufacturer to avoid carbon material damage due to excessive tightening or insufficient component holding force resulting from insufficient tightening torque.

Installation on rear suspension types

TECH TIPS

Bicycles with rear suspensions may be positioned differently when a rider is off the bicycle and on the bicycle. By referring to the illustration, perform installation and SIS adjustment while seated on the bicycle.

Installation of the front derailleur (Front triple)

Band type (FD-M9000/M8000/M672/M612)

Side swing

1 (A) (z)

Temporarily attach the clamp bolt.

(z) 4 mm hexagon wrench

(A) Clamp bolt

10

INSTALLATION

Installation of the front derailleur (Front triple)

2

[A-B]

(B)

(A)

Align the flat portion of the chain guide outer plate in parallel with the flat surface of the largest chainring. Make sure that distance [A-B] from the tip of the teeth of the largest chainring is 1 to 3 mm.

[A-B] 1 - 3 mm

(A) Chain guide outer plate

(B) Largest chainring

TECH TIPS

Check by holding a hexagon wrench against the flat surface of the largest chainring as shown in the illustration.

When performing a readjustment etc., without a pro-set alignment block, align the flat surface of the largest chainring using the low adjustment bolt.

H L

Low adjustment bolt

2 mm hexagon wrench

3 When adjustment is complete, tighten the clamp bolt. Tightening torque

5 - 7 Nm

11

INSTALLATION

Installation of the front derailleur (Front triple)

Direct mount type (FD-M9000/M8000/M672/M612)

Side swing

1

(z)

Temporarily attach the front derailleur to the frame.

(z) 4 mm hexagon wrench

2 [A-B]

(B)

(A)

Align the flat portion of the chain guide outer plate in parallel with the flat surface of the largest chainring. Make sure that distance [A-B] from the tip of the teeth of the largest chainring is 1 to 3 mm.

[A-B] 1 - 3 mm

(A) Chain guide outer plate

(B) Largest chainring

TECH TIPS

When performing a readjustment etc., without a pro-set alignment block, align the flat surface of the largest chainring using the low adjustment bolt.

H L

Low adjustment bolt

2 mm hexagon wrench

3 When adjustment is complete, secure the front derailleur to the frame. Tightening torque

5 - 7 Nm

12

INSTALLATION

Installation of the front derailleur (Front triple)

Type E (FD-M9000/M8000/M672/M612)

Side swing

1

(A)(B) (C) Install the front derailleur with bottom bracket mount fixing bolts.

(A) Bottom bracket mount fixing bolt

(B) Bottom bracket mount

(C) Bracket

NOTE

Shimano does not provide the bottom bracket mount fixing bolts.

TECH TIPS

Some models support up to 42T. Fixing position

(z)

Largest chainring

(z) 40T

2 [A-B]

(B)

(A)

Align the flat portion of the chain guide outer plate in parallel with the flat surface of the largest chainring. Make sure that distance [A-B] from the tip of the teeth of the largest chainring is 1 to 3 mm after installing the front chainwheel. If the clearance does not fall within the range, adjust the fixing position with the elongated hole and fix the fixing bolt again.

[A-B] 1 - 3 mm

(A) Chain guide outer plate

(B) Largest chainring

TECH TIPS

When performing a readjustment etc., without a pro-set alignment block, align the flat surface of the largest chainring using the low adjustment bolt.

H L

Low adjustment bolt

2 mm hexagon wrench

13

INSTALLATION

Installation of the front derailleur (Front double)

Installation of the front derailleur (Front double)

Band type (FD-M9020/M8020/M617/M677)

Side swing

1 (A) (z)

Temporarily attach the clamp bolt.

(z) 4 mm hexagon wrench

(A) Clamp bolt

2

H L

[B-C]

(C)

(B)

(A) (z)

Adjust the low adjustment bolt and align the flat portion of the chain guide outer plate parallel to the flat surface of the largest chainring. Make sure that distance [B-C] from the tip of the teeth of the largest chainring is 1 to 3 mm.

[B-C] 1 - 3 mm

(z) 2 mm hexagon wrench

(A) Low adjustment bolt

(B) Chain guide outer plate

(C) Largest chainring

NOTE

Make sure not to position the chain guide as shown in the illustration.

3 When adjustment is complete, tighten the clamp bolt. Tightening torque

5 - 7 Nm

14 To be continued on next page

INSTALLATION

Installation of the front derailleur (Front double)

Band type (FD-M9025/M8025/M618)

Top swing/Down swing

1 (A) (z)

Temporarily attach the clamp bolt.

(z) 4 mm hexagon wrench

(A) Clamp bolt

15

INSTALLATION

Installation of the front derailleur (Front double)

2

Adjust the low adjustment bolt and align the flat portion of the chain guide outer plate parallel to the flat surface of the largest chainring. Make sure that distance [B-C] from the tip of the teeth of the largest chainring is 1 to 3 mm.

[B-C] 1 - 3 mm

(x) Top swing

(y) Down swing

(z) 2 mm hexagon wrench

(A) Low adjustment bolt

(B) Chain guide outer plate

(C) Largest chainring

NOTE

Make sure not to position the chain guide as shown in the illustration.

TECH TIPS

Check by holding a hexagon wrench against the flat surface of the largest chainring as shown in the illustration.

HL H L

(B)

(C)

[B-C]

(z) (A)

(A) (z)

(y)(x)

3 When adjustment is complete, tighten the clamp bolt. Tightening torque

5 - 7 Nm

16

INSTALLATION

Installation of the front derailleur (Front double)

Direct mount type (FD-M9020/M8020/M617/M677)

Side swing

1

(z)

(y)

Temporarily attach the front derailleur to the frame.

(y) Installation height

(z) 4 mm hexagon wrench

NOTE

Compatible chainrings vary depending on the installation height. Be sure to check the dimensions of the frame.

Installation height Largest compatible

chainring 155.5 mm 34T - 36T

159.5 mm 36T - 38T

2

H L

[A-B]

(B)

(A)

(z)

Adjust the low adjustment bolt and align the flat portion of the chain guide outer plate parallel to the flat surface of the largest chainring. Make sure that distance [A-B] from the tip of the teeth of the largest chainring is 1 to 3 mm.

[A-B] 1 - 3 mm

(z) 2 mm hexagon wrench

(A) Chain guide outer plate

(B) Largest chainring

NOTE

Make sure not to position the chain guide as shown in the illustration.

3 When adjustment is complete, secure the front derailleur to the frame. Tightening torque

5 - 7 Nm

17

INSTALLATION

Installation of the front derailleur (Front double)

Direct mount type (FD-M9025/M8025/M618)

Down swing

1

(z)

(y)

Temporarily attach the front derailleur to the frame.

(y) Installation height

(z) 4 mm hexagon wrench

NOTE

Compatible chainrings vary depending on the installation height. Be sure to check the dimensions of the frame.

Installation height Largest compatible

chainring 155.5 mm 34T - 36T

159.5 mm 36T - 38T

2

H L

[A-B]

(B)

(A)

(z)

Adjust the low adjustment bolt and align the flat portion of the chain guide outer plate parallel to the flat surface of the largest chainring. Make sure that distance [A-B] from the tip of the teeth of the largest chainring is 1 to 3 mm.

[A-B] 1 - 3 mm

(z) 2 mm hexagon wrench

(A) Chain guide outer plate

(B) Largest chainring

NOTE

Make sure not to position the chain guide as shown in the illustration.

3 When adjustment is complete, secure the front derailleur to the frame. Tightening torque

5 - 7 Nm

18 To be continued on next page

INSTALLATION

Installation of the front derailleur (Front double)

Type E (FD-M9020/M8020/M617/M677)

Side swing

1

(A)(B) (C) Secure with bottom bracket mount fixing bolts. Fixing position varies depending on the number of gear teeth used. Refer to the illustration for fixing position.

(A) Bottom bracket mount fixing bolt

(B) Bottom bracket mount

(C) Bracket

NOTE

Shimano does not provide the bottom bracket mount fixing bolts.

Fixing position

(x)

(y)

(z)

Largest chainring

(x) 38T

(y) 36T

(z) 34T

19

INSTALLATION

Installation of the front derailleur (Front double)

2

H L

(A)

(B)

[A-B]

(z)

Adjust the low adjustment bolt and align the flat portion of the chain guide outer plate parallel to the flat surface of the largest chainring. Make sure that distance [A-B] from the tip of the teeth of the largest chainring is 1 to 3 mm after installing the front chainwheel. If the clearance does not fall within the range, adjust the fixing position with the elongated hole and fix the fixing bolt again.

[A-B] 1 - 3 mm

(z) 2 mm hexagon wrench

(A) Chain guide outer plate

(B) Largest chainring

NOTE

Make sure not to position the chain guide as shown in the illustration.

20 To be continued on next page

INSTALLATION

Installation of the front derailleur (Front double)

Type E (FD-M9025/M8025/M618)

Top swing

1

(A)(B)

(C)

Secure with bottom bracket mount fixing bolts. Fixing position varies depending on the number of gear teeth used. Refer to the illustration for fixing position.

(A) Bottom bracket mount fixing bolt

(B) Bottom bracket mount

(C) Bracket

NOTE

Shimano does not provide the bottom bracket mount fixing bolts.

Fixing position

(x)

(y)

(z)

Double: Largest chainring

(x) 38T

(y) 36T

(z) 34T

21

INSTALLATION

Installation of the front derailleur (Front double)

2

Adjust the low adjustment bolt and align the flat portion of the chain guide outer plate parallel to the flat surface of the largest chainring. Make sure that distance [A-B] from the tip of the teeth of the largest chainring is 1 to 3 mm after installing the front chainwheel. If the clearance does not fall within the range, adjust the fixing position with the elongated hole and fix the fixing bolt again.

[A-B] 1 - 3 mm

(z) 2 mm hexagon wrench

(A) Chain guide outer plate

(B) Largest chainring

NOTE

Make sure not to position the chain guide as shown in the illustration.HL

(A)

(B)

[A-B]

(z)

ADJUSTMENT

23 To be continued on next page

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front triple)

ADJUSTMENT

Adjustment procedures differ depending on whether the bicycle features front triples or front doubles. Before making adjustments, check the specifications of the bicycle.

Installing the cable and adjusting shifting operation (Front triple)

Position adjustment of the low side

1

(A) Remove the Pro-Set alignment block. (A) Pro-Set alignment block

2

Adjust the chain position to the smallest chainring and the largest sprocket as shown in the illustration.

(w) Low

(x) Middle

(y) Top

(z) Cable index point

(A) Smallest chainring

(B) Largest sprocket

(A)

(B)

(w)

(z)

(x) (y)

24

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front triple)

3

H L AB

AB H L

HL

AB

AB

(A) (z)

(z)

(z)

(A)

(A)

(B)

(C)

[B-C]

(w)

(x)

(y)

Adjust the position of the chain guide with the low adjustment bolt. Adjust the clearance [B-C] between the chain guide inner plate and the chain to be 0 to 0.5 mm.

[B-C] 0 - 0.5 mm

(w) Top swing

(x) Down swing

(y) Side swing

(z) 2 mm hexagon wrench

(A) Low adjustment bolt

(B) Chain guide inner plate

(C) Chain

25 To be continued on next page

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front triple)

Securing the cable

Side swing (FD-M9000/M8000/M672/M612)

1

(A) (C) (D)(B) Adjust the shifting lever to the low position. Run the cable through the front derailleur. Run the inner cable along the cable guide.

(A) Inner cable

(B) Cable guide

(C) Sealed outer cap

(D) Outer casing

NOTE

Replacing the cover with tongue is recommended when replacing the inner cable. Refer to "MAINTENANCE" for the replacement method. The cover with tongue is provided only with FD-M9000.

Cover with tongue

Fuzz may be generated when the inner cable is installed or when the coating is damaged during use, but this will not affect its functions.

If the outer casing moves to a large degree, such as in bicycles with suspension, it is recommended that you use an aluminum type sealed outer cap.

Sealed outer cap Sealed outer cap (aluminum type)

2

(A) Pass the inner cable through along the cable-fixing groove on the top of the fixing bolt.

(A) Cable-fixing groove

NOTE

Be sure to run the inner cable along the cable-fixing groove as shown in the illustration.

26 To be continued on next page

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front triple)

3

Fix the inner cable with a cable-fixing bolt.

Tightening torque

6 - 7 Nm

Adjustment of the cable tension

1

Adjust the chain position to the middle chainring and the largest sprocket as shown in the illustration.

(w) Low

(x) Middle

(y) Top

(z) Cable index point

(A) Middle chainring

(B) Largest sprocket

NOTE

Adjust the lever after operating it from top to middle, not low to middle.

(A)

(B)

(y)(x)

(z)

(w)

27 To be continued on next page

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front triple)

2

A

A

B

B

(B)

(C)

(A)

[B-C]

Adjust the position with the cable adjuster. Adjust the clearance [B-C] between the chain guide inner plate and the chain to be 0 to 0.5 mm.

[B-C] 0 - 0.5 mm

(A) Cable adjuster

(B) Chain guide inner plate

(C) Chain

TECH TIPS

After adjusting the position with the cable adjuster, operate the lever once and check the clearance again.

Top adjustment

1

Adjust the chain position to the largest chainring and the smallest sprocket as shown in the illustration.

(w) Low

(x) Middle

(y) Top

(z) Cable index point

(A) Largest chainring

(B) Smallest sprocket

(A)

(B)

(w) (x) (y)

(z)

28

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front triple)

2 AB

H L

HL AB

H L

AB

A B

(B)

(C)

(A)

(A)

(A)

[B-C]

(z)

(z)

(z)

(w)

(x)

(y)

Adjust the position of the chain guide with the top adjustment bolt. Adjust the clearance [B-C] between the chain guide outer plate and the chain to be 0 to 0.5 mm.

[B-C] 0 - 0.5 mm

(w) Top swing

(x) Down swing

(y) Side swing

(z) 2 mm hexagon wrench

(A) Top adjustment bolt

(B) Chain

(C) Chain guide outer plate

29

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front triple)

Checking gear shifting and minor adjustments

After the cable is installed and adjusted, check the gear-shift by operating the shifting lever. (This also applies if shifting becomes difficult during use.) Use the table as a reference when adjusting the bolts. Turn the bolt by 1/8th turn for each adjustment.

If the chain falls to the crank side. Turn the top adjustment bolt clockwise.

If shifting is difficult from the middle chainring to the largest

chainring.

Tighten the cable. If this does not improve the situation, turn the

top adjustment bolt counterclockwise.

If shifting is difficult from the largest chainring to the middle

chainring. Loosen the cable.

If the chain falls to the bottom bracket side. Turn the low adjustment bolt clockwise.

If the middle chainring is skipped when shifting from the largest

chainring. Tighten the cable.

If shifting is difficult from the middle chainring to the smallest

chainring. Turn the low adjustment bolt counterclockwise.

30

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front double)

Installing the cable and adjusting shifting operation (Front double)

Note: Number of front chainring positions and lever position

The procedure for operating the shifting lever is as follows.

For double front chainrings

(A) (B)

(v)

(w)

(x) (y) (z)

Use the low and middle positions of the shifter. The top position is not used.

(v) Front chainring position

(w) Shifting lever position

(x) Low

(y) Middle

(z) Top

(A) Smallest chainring

(B) Largest chainring

Note: Using the mode converter

A

B

(x)

(y) (z)

(x) Converter in detail

(y) Old

(z) New

TECH TIPS

Mode converter positions on the shifting lever

A

31

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front double)

Position adjustment of the low side

1

Adjust the chain position to the smallest chainring and the largest sprocket as shown in the illustration.

(x) Low

(y) Top

(z) Cable index point

(A) Smallest chainring

(B) Largest sprocket

(A)

(B)

(x)

(z)

(y)

2

H L AB

AB H L

HL

AB

AB

(A) (z)

(z)

(z)

(A)

(A)

(B)

(C)

[B-C]

(w)

(x)

(y)

Adjust the position of the chain guide with the low adjustment bolt. Adjust the clearance [B-C] between the chain guide inner plate and the chain to be 0 to 0.5 mm.

[B-C] 0 - 0.5 mm

(w) Top swing

(x) Down swing

(y) Side swing

(z) 2 mm hexagon wrench

(A) Low adjustment bolt

(B) Chain guide inner plate

(C) Chain

32 To be continued on next page

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front double)

Securing the cable

Side swing (FD-M9020/M8020/M617/M677)

1

(A) (C) (D)(B) Adjust the shifting lever to the low position. Run the cable through the front derailleur. Run the inner cable along the cable guide.

(A) Inner cable

(B) Cable guide

(C) Sealed outer cap

(D) Outer casing

NOTE

Replacing the cover with tongue is recommended when replacing the inner cable. Refer to "MAINTENANCE" for the replacement method. The cover with tongue is provided only with FD-M9020.

Cover with tongue

Fuzz may be generated when the inner cable is installed or when the coating is damaged during use, but this will not affect its functions.

If the outer casing moves to a large degree, such as in bicycles with suspension, it is recommended that you use an aluminum type sealed outer cap.

Sealed outer cap Sealed outer cap (aluminum type)

2

(A) Pass the inner cable through along the cable-fixing groove on the top of the fixing bolt.

(A) Cable-fixing groove

NOTE

Be sure to run the inner cable along the cable-fixing groove as shown in the illustration.

33

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front double)

3

Fix the inner cable with a cable-fixing bolt.

Tightening torque

6 - 7 Nm

Top swing (FD-M9025/M8025/M618) Common to E Type and band type

(A)

Use a hexagon wrench to tighten the wire mounting bolt.

(A) 4 mm hexagon wrench

Tightening torque

6 - 7 Nm

Down swing (FD-M9025/M8025/M618) Band type

(A) (A)

(y) (z)

For down-pull types: Pass the inner cable through the cable guide. For top-pull types: Pass the inner cable through the wire mounting bolt. A cable guide is not used.

(y) Down pull

(z) Top pull

(A) 4 mm hexagon wrench

Tightening torque

6 - 7 Nm

NOTE

Run the cable through as shown in the illustration.

34

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front double)

Direct mount type

(A) (A)

(B)

(y) (z)

For down-pull types: Pass the inner cable through the cable guide. For top-pull types: Install the sealed outer cap and pass the inner cable through the wire mounting bolt. A cable guide is not used.

(y) Down pull

(z) Top pull

(A) 4 mm hexagon wrench

(B) Sealed outer cap

Tightening torque

6 - 7 Nm

NOTE

Replacing the cover with tongue is recommended when replacing the inner cable. Refer to "MAINTENANCE" for the replacement method. The cover with tongue is provided only with FD-M9025.

Cover with tongue

Fuzz may be generated when the inner cable is installed or when the coating is damaged during use, but this will not affect its functions.

If the outer casing moves to a large degree, such as in bicycles with suspension, it is recommended that you use an aluminum type sealed outer cap.

Sealed outer cap Sealed outer cap (aluminum type)

Run the cable through as shown in the illustration.

35

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front double)

Adjustment of the cable tension

1

Adjust the chain position to the largest chainring and the largest sprocket as shown in the illustration.

(x) Low

(y) Top

(z) Cable index point

(A) Largest chainring

(B) Largest sprocket

(A)

(B)

(x) (y)

(z)

2

A

A

B

B

(B)

(C)

(A)

[B-C]

Adjust the position with the cable adjuster. Adjust the clearance [B-C] between the chain guide inner plate and the chain to be 0 to 0.5 mm.

[B-C] 0 - 0.5 mm

(A) Cable adjuster

(B) Chain guide inner plate

(C) Chain

TECH TIPS

After adjusting the position with the cable adjuster, operate the lever once and check the clearance again.

36

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front double)

Top adjustment

1

Adjust the chain position to the largest chainring and the smallest sprocket as shown in the illustration.

(x) Low

(y) Top

(z) Cable index point

(A) Largest chainring

(B) Smallest sprocket

(A)

(B)

(x) (y)

(z)

2 AB

H L

HL AB

H L

AB

A B

(B)

(C)

(A)

(A)

(A)

[B-C]

(z)

(z)

(z)

(w)

(x)

(y)

Adjust the position of the chain guide with the top adjustment bolt. Adjust the clearance [B-C] between the chain guide outer plate and the chain to be 0 to 0.5 mm.

[B-C] 0 - 0.5 mm

(w) Top swing

(x) Down swing

(y) Side swing

(z) 2 mm hexagon wrench

(A) Top adjustment bolt

(B) Chain

(C) Chain guide outer plate

37

ADJUSTMENT

Installing the cable and adjusting shifting operation (Front double)

Checking gear shifting and minor adjustments

After the cable is installed and adjusted, check the gear-shift by operating the shifting lever. (This also applies if shifting becomes difficult during use.) Use the table as a reference when adjusting the bolts. Turn the bolt by 1/8th turn for each adjustment.

If the chain falls to the crank side. Turn the top adjustment bolt clockwise.

If shifting is difficult from the smallest chainring to the largest

chainring.

Tighten the cable. If this does not improve the situation, turn the

top adjustment bolt counterclockwise.

If shifting is difficult from the largest chainring to the smallest

chainring. Loosen the cable.

If the chain falls to the bottom bracket side. Tighten the cable. If this does not improve the situation, turn the

low adjustment bolt clockwise.

MAINTENANCE

39 To be continued on next page

MAINTENANCE

Replacing the chain catcher

MAINTENANCE

Replacing the chain catcher

Depending on the specifications, there are also models without a chain catcher.

Removal

(A)

(B)

Remove the fixing bolt. (A) Hexalobular[#10]

(B) Fixing bolt

Installation

1

(A)

(B)

(C)

Temporarily attach the chain catcher to the chain guide.

(A) Chain guide

(B) Chain catcher

(C) Arm of the chain catcher

40

MAINTENANCE

Replacing the chain catcher

2

(A)

Securely attach the arm of the chain catcher as shown in the illustration.

(A) Arm of the chain catcher

NOTE

The shape of the chain catcher may differ depending on the model. Be sure to use a compatible chain catcher.

In the case of a chain catcher such as shown in the illustration, take notice of the protrusion positions while carrying out replacement.

Protrusion

3 (A)

(B)

(C)

Fix the chain catcher to the chain guide inner plate.

(A) Hexalobular[#10]

(B) Fixing bolt

(C) Chain guide inner plate

Tightening torque

1 - 2 Nm

41

MAINTENANCE

Replacing rubber pad A

Replacing rubber pad A

Depending on the specifications, there are also models without rubber pad A.

Removal

1

(A) Remove rubber pad A. Insert a small slotted screwdriver into the gap as shown in the illustration.

(A) Rubber pad A

2

Lift upward to remove it. NOTE

When removing rubber pad A, do not apply excessive force. It may cause damage to the chain guide or unexpected injuries.

Do not reuse rubber pads that have been removed. The rubber pad may become loose easily due to deformation etc.

42

MAINTENANCE

Replacing rubber pad A

Installation

1

(A)

(B)

Install rubber pad A. Fit the elongated hole to the arm of rubber pad A. Push in the arm of rubber pad A all the way.

(A) Arm of rubber pad A

(B) Elongated hole

2

Align the protrusion of rubber pad A with the chain guide hole. Lightly push in rubber pad A with an 8 mm hexagon wrench. Firmly insert rubber pad A.

43

MAINTENANCE

Replacing rubber pad B

Replacing rubber pad B

Removal

(A) Peel back rubber pad B from the reverse side of the chain guide and remove it.

(A) Rubber pad B

Installation

(A) Align the rubber pad B mounting hole of the chain guide with the protrusion of rubber pad B. Push in the protrusion from the reverse side of rubber pad B. Make sure that the protrusion of rubber pad B is securely fitted on the chain guide.

(A) Rubber pad B mounting hole

44

MAINTENANCE

Replacing the cover with tongue

Replacing the cover with tongue

Removal

(A)

Push the cover with tongue in the direction of the arrow, and then remove it from the bracket.

(A) Cover with tongue

Installation

Insert the new cover with tongue into the bracket, and then push it in until the burred section springs out.

(A) Bracket

(B) Burred secti

Manualsnet FAQs

If you want to find out how the Deore XT Shimano works, you can view and download the Shimano Deore XT FD-M8025 Front Derailleur Dealer's Manual on the Manualsnet website.

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The Dealer's Manual should include all the details that are needed to use a Shimano Deore XT. Full manuals and user guide PDFs can be downloaded from Manualsnet.com.

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