Shimano RD-M410 Service Instructions Manual

RD-M410

8

43T

34T

11T

20T

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.

• 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.

• 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 oil 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.

• 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 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.

• 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.

• 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.

• 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.

• 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 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-CN32/ TL-CN23

TL-CN32/ TL-CN23

6.5mm

7.1mm

Silver

Black

g

a

-

18

T

-

S

H

I

M

A

N

O

H

Y

P

E

R

G

L

I

D

E

C

a

g

-

1

5

T

a

g

-

1

3

T

Group marks

Reinforced Connecting Pin

End Pin Link Pin

Alivio

Technical Service Instructions SI-6KFRB

Rear Drive System

ST-M410 / SL-M410

SP40

RD-M410

SGS

FH-MC18 / FH-RM40-8

8

CS-HG50-8I

CN-HG50 / CN-HG40

SM-SP17 / SM-BT17 / SM-SP18 / SM-BT18

Specifications

Model number

Gears

Total capacity

Largest sprocket

Smallest sprocket

Front chainwheel tooth difference

Applicable front chainwheel
(chainring tooth configuration)

Rear Derailleur

FC-M416 / FC-M415 / FC-M411 / FC-M410

(42T-32T-22T / 48T-38T-28T)

Gears Group name Tooth combination

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

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

11, 13, 15, 18, 21, 24, 28, 32T

Cassette sprocket tooth combination

8

an

ao

aw

Model number ST-M410 / SL-M410

8

Rapidfire Plus

Gears

Model number FH-MC18 / FH-RM40-8

8

36 / 32

Freehub

Sprockets

No. of spoke holes

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.

FH-MC18 / FH-RM40-8

SL-M410

SL-M410

ST-M410

Freewheel body Freewheel body fixing bolt

Freewheel body washer

10 mm Allen key

(TL-WR37)

Disassembly

Assembly

Tightening torque:

35 - 50 N·m {305 - 434 in. lbs.}

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

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 cable adjusting
barrel until the chain returns to
the 2nd sprocket. (clockwise)

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

Outer casing
adjustment
barrel

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.

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

When no sound at
all is heard

Outer casing
adjustment
barrel

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 B­tension 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

1 2

2

1

Largest sprocket

Smallest sprocket

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.

1

1 2

2

Largest sprocket

Guide pulley

Low

adjustment screw

B-tension

adjustment screw

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-shi, Osaka 590-8577, Japan

Please note: specifications are subject to change for improvement without notice. (English)
© Oct. 2006 by Shimano Inc. XBC SZK Printed in Singapore.

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.

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

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

Tightening torque :

5 - 7 N·m {44 - 60 in. lbs.}

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.

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

Pull

Note: Be sure that the cable is

securely in the groove.

1

2

1 2

Outer line of smallest
sprocket

Guide pulley

Top adjustment

screw

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.

SIS Adjustment

1

8

1

8

Chain

5 mm Allen key 5 mm Allen key

Largest chainringLargest sprocket

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

• Install the shifting lever in a position where it will not obstruct brake operation
and gear shifting operation.

• Do not use in a combination which causes brake operation to be obstructed.

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

Chain length

Installation of the lever

a

b

1

1

T

H

Y

P

E

R

G

L

I

D

E

-

C

J

A

P

A

N

U

.

S

.

P

A

T

4

2

6

8

2

5

9

L

O

C

K

4

0

0

k

g

/

c

m

O

N

A

M

I

H

S

5 mm Allen key

Dropout tab

B-tension
adjustment
screw

Installation of the rear derailleur

Installation of the sprockets

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 N·m {70 - 86 in. lbs.}

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 sprocket to a larger
sprocket (Lever A)

To shift one step only, press lever (A) to the (1)
position. To shift two steps at one time, press
to the (2) position.

To shift from a large sprocket to a
smaller sprocket (Lever B)

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

1

2

Lever (A) initial position

Lever (B)

Series

Rapidfire Plus

Outer casing

Rear derailleur

Type

Freehub

Gears

Cassette sprocket

Chain

Bottom bracket guide

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

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.

1

8

Lever (B)

Inner cable

Inner hole cover

Inner hole cover

Tightening torque :

0.3 - 0.5 N·m {3 - 4 in. lbs.}

2. Connecting and securing the inner cable

Operate lever (B) 7 times or more, and check on
the indicator that the lever is at the highest
position. Then remove the inner hole cover and
connect the inner cable.

Tightening torque :

5 N·m

{44 in lbs.}

Tightening torque :

6 - 8 N·m

{53 - 69 in. lbs.}

The 6 sprockets are secured by

means of rivets.

Lock ring

For each sprocket, the surface that has the group mark
should face outward and be positioned so that the
triangle (

U) mark on each sprocket and the A part (where
the groove width is wide) of the freewheel body are
aligned.

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

To replace the HG sprockets, use the special tool (TL-LR15)
and TL-SR21 to remove the lock ring.

The groove is wide
at one place only.

a

c

-

1

4

T

A

U mark

Tightening torque:

30 - 50 N·m {261 - 434 in. lbs.}

Lock ring

Tool
(TL-SR21)

Disassembly

TL-LR15