Page 1
1
2
Largest sprocket
Guide pulley
Low adjustment
screw
20 T
28 T
14 T
34 T
Front chainwheel tooth difference
Largest sprocket
Smallest sprocket
Total capacity
In order to realize the best performance, we recommend that the following combination be used.
Installation of the rear derailleur
Specifications
Chain length
Stroke adjustment and
cable securing
1. Top adjustment
Turn the top adjustment screw to adjust so that the
guide pulley is below the outer line of the smallest
sprocket when looking from the rear.
1
2
Outer line of
smallest sprocket
Guide pulley
Top adjustment
screw
2. Connection and securing of the cable
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.
Pull
Tightening torque:
5 - 7 N·m {44 - 60 in. lbs.}
Tightening torque:
8 - 10 N·m
{70 - 86 in. lbs.}
Note:
Be sure that the
cable is securely
in the groove.
Groove
3. Low adjustment
Turn the low adjustment screw so that the guide
pulley moves to a position directly in line with the
largest sprocket.
For the best SIS performance, periodically lubricate all
power-transmission parts.
* Service Instructions in further languages are available
at :
http://techdocs.shimano.com
Please note: specifications are subject to change for improvement without notice.
(English) © Jul. 2011by Shimano Inc. XBC Pr inted in China.
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-ku, Sakai-shi, Osaka 590-8577, Japan
4. 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 When no sound at all
is heard
Outer casing
adjustment barrel
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.
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)
RD-TZ31
Rear Derailleur
Frame
Bracket nut
5 mm Allen Key
Push in
and tighten
Bracket
Bracket bolt
Tightening torque:
3 - 4 N·m {26 - 34 in. lbs.}
<
Direct-mount type
>
<
Bracket type
>
Add 2 links (with the
chain on both the largest
sprocket and the largest
chainring)
Largest sprocket Largest chainring
Chain
General Safety Information
Chain toolChain
WARNING
“Maintenance interval depends on the usage and riding
circumstances. Clean regularly the chain with an appropriate
chaincleaner. Never use alkali based or acid based solvents such as
rust cleaners. If those solvent be used chain might break and cause
serious injury.”
• 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.
9-speed super narrow
chain such as
CN-7701 / CN-HG93
8- /7- / 6-speed narrow
chain such as
CN-HG50 / CN-HG40
Reinforced
connecting pin
TL-CN32 /TL-CN27
TL-CN32 /TL-CN27
6.5mm
7.1mm
Silver
Black
• 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 the bicycle to fall over and serious injury may
occur as a result. 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
• The reinforced connecting pins cannot be used with the UG chain, otherwise the
connections will not move properly and noise will occur.
• If gear shifting operations cannot be carried out smoothly, clean 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.
• Grease the inner cable and the inside of the outer casing before use to ensure that they
slide properly.
• 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.
• 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.
Reinforced Connecting Pin
End Pin Link Pin
Technical Service Instructions SI-5FZ0A-001
SI-5FZ0A-001-00
Series
Gears
Shifting lever (Right)
Outer casing
Rear derailleur
Freewheel
Chain
Bottom bracket cable guide
Tourney (SIS)
7-gears
SL-RS36-7R / SL-RS35-7R
OT-SIS40
RD-TZ31
MF-HG37 / MF-TZ21 / MF-TZ21-CP / CS-HG20-7
CN-UG51 / CN-HG40
SM-SP18
6-gears
SL-RS36-6R / SL-RS35-6R
OT-SIS40
RD-TZ31
MF-TZ20 / MF-TZ20-CP
CN-UG51 / CN-HG40
SM-SP18
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