Front Drive System
SI-6M30B-002-00
General Safety Information
Specifications
Front Derailleur
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.
Reinforced
If connecting pins other than reinforced connecting pins
Chain
Chain tool
connecting pin
are used, or if a reinforced connecting pin or tool which
is not suitable for the type of chain is used, sufficient
9-speed super narrow
Silver
connection force may not be obtained, which could
chain such as
TL-CN32 / TL-CN27
6.5mm
CN-7701 / CN-HG93
cause the chain to break or fall off.
8- / 7- / 6-speed narrow
• If it is necessary to adjust the length of the chain due
Black
chain such as
TL-CN32 / TL-CN27
to a change in the number of sprocket teeth, make the
7.1mm
CN-HG50 / CN-HG40
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
Reinforced Connecting Pin
is cut at a place where it has been joined with a reinforced connecting pin or an end 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
End Pin
Link Pin
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.
• 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.
• 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 the
bicycle to fall over and serious injury may occur as a result. We strongly recommend only using genuine Shimano replacement
parts.
• Obtain and read the service instructions carefully prior to installing the parts. If adjustments are not carried out correctly, the
chain may come off and this may cause you to fall off the bicycle which could result in serious injury.
• 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.
• Before riding the bicycle, check that there is no play or looseness in the connection. Also, be sure to retighten the crank arm
fixing bolt at periodic intervals. (BB-FC, FC-PD)
• Do not wash the bottom bracket with high-pressure jets of water.
• If you feel any looseness in the bearings, 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 an 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 left and right adapters before installing them.
• 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
Outer casing holders
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.
• 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.
• Operation of the levers related to gear shifting should be made only when the front chainwheel is turning.
• 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.
FD-M970 / FD-M970-E
FD-M971
Normal type
X
X
Top route type
X
X
20T / 22T
20T / 22T
12T
12T
S, M, L
S, M, L
Chainstay angle (a)
66° - 69°
66° - 69°
Applicable chain line
50 mm
50 mm
Model number
Front chainwheel tooth difference
Min. difference between top and intermediate
Front derailleur installation band diameter
1. Low adjustment
Installation band diameters:
S (28,6 mm), M (31,8 mm), L (34,9 mm)
S (w / Adapter S)
M (w / Adapter M)
FD-M971
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
FD-M971
FD-M970
Chain position
Smallest
sprocket
Largest
chainring
Top adjustment
screw
Chainstay angle
Chain guide
outer plate
FD-M970
Low adjustment
screw
Chain
Chain position
Chainwheel
Largest
sprocket
FC-M970
Model number
Smallest
chainring
44-32-22T / 44-32-24T
Chainwheel tooth combination
4. Adjustment of the intermediate
chainring
Chain guide
inner plate
104 mm / 64 mm
Bolt circle diameter
Chain
165 mm, 167.5 mm, 170 mm, 172.5 mm, 175 mm, 177.5 mm, 180 mm
Crank arm length
50 mm
Chain line
2. Connecting and securing the inner cable
68, 73 mm
Bottom bracket shell width
Operate the lever (B) two times or more to set the lever to the
lowest position. Then remove the inner hole cover and connect
the inner cable.
BC1.37 (68, 73mm)
Thread dimensions
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.
Chain guide
inner plate
Chain
Chain position
Largest
sprocket
Intermediate
chainring
Gear shifting operation
The INSTANT RELEASE mechanism makes fast releasing possible because cable tension is released immediately when a lever is
depressed.
This release lever is equipped with a 2-way release mechanism which allows release operations to be carried out by either pushing or
pulling the lever.
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)
To shift from a large chainring to a smaller chainring
(Lever B)
When lever (A) is pressed once, there is a shift of one step from a
small chainring to a larger chainring.
When lever (B) is pressed once, there is a shift of one step from a
large chainring to a smaller chainring.
Example:
Example:
from intermediate chainring to largest chainring.
from largest chainring to intermediate chainring.
Outer casing adjustment barrel
Lever (B)
Inner cable
Inner hole cover
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 thread on the
cover.
Tightening torque :
0.3 - 0.5 N·m {3 - 4 in. lbs.}
After cutting the outer casing, make the
end round so that the inside of the hole
has a uniform diameter.
Lever (A) initial position
Installation of the Front Derailleur
For bracket type
Front Derailleur
Install as shown in the
illustration.
Front Chainwheel
Largest sprocket
Largest chainring
• FD-M970
< Normal type >
< Top route type >
Bolt
Note:
Pass the cable
through as shown
in the illustration.
Chain
Adapter
5 mm Allen key
Pro-Set alignment block
Gear teeth
should come
within this range
4 mm Allen key
If shifting is difficult from the
intermediate chainring to the
smallest chainring.
Loosen the low adjustment screw
counterclockwise
(about 1/4 turn).
Loosen the outer casing
adjustment barrel
counterclockwise (1 or 2 turns).
If the chain falls to the bottom
bracket side.
Tighten the low adjustment screw
clockwise (about 1/2 turn).
If the lever is stiff when shifting
from the intermediate chainring
to the largest chainring
Loosen the top adjustment screw
counterclockwise (about 1/4
turn).
1. Loosen the cable fixing bolt (nut)
of the front derailleur, and then pull
the inner cable out of the shifting
lever unit in the same way as
when installing the inner cable.
Unit fixing bolt
Spring washer
• FD-M971
Tightening torque :
3 N·m {27 in. lbs.}
< Top route type >
< Normal type >
Note:
Pass the cable
through as shown
in the illustration.
This shifting lever can be installed on
either the inboard or the outboard side of
the brake lever.
Pro-Set gauge
Loosen the top adjustment screw
counterclockwise
(about 1/8 turn).
Disassembly and reassembly should only be carried out when
replacing the shifting lever unit.
Installation of the shifting lever
Adjust and then install the front derailleur as shown in the
illustration. Do not remove the Pro-Set alignment block at this time.
If shifting is difficult from the
intermediate chainring to the
largest chainring.
Replacement of the shifting lever unit
Wire
fixing bolt
Use a handlebar grip with a maximum
outer diameter of 32 mm.
Tighten the top adjustment screw
clockwise (about 1/4 turn).
If there is interference between
Tighten the outer casing
the chain and front derailleur
adjustment barrel clockwise
inner plate when the rear
(1 or 2 turns).
sprocket is shifted to the largest
sprocket when the chainwheel is
at the intermediate chainring
position.
Chain length
Add 2 links (with the chain on both
the largest sprocket and the largest
chainring)
If the chain falls to the crank
side.
If the intermediate chainring is
skipped when shifting from the
largest chainring.
Attach the same outer
end cap to the cut end of
the outer casing.
• 2-WAY RELEASE
After completion of steps 1 - 4, move the shifting lever to check the
shifting. (This also applies if shifting becomes difficult during use.)
Loosen the top adjustment screw
If there is interference between
the chain and the front derailleur counterclockwise
(about 1/8 turn).
outer plate at the largest
chainring.
Outer end cap
Lever (B)
5. Troubleshooting chart
Tighten the top adjustment screw
If there is interference between
the chain and the front derailleur clockwise (about 1/8 turn).
inner plate at the largest
chainring.
Cutting the outer casing
Tightening torque :
35 - 50 N·m {305 - 435 in. lbs.}
SI-6M30B-002
Set so that the clearance
between the chain guide outer
plate and the chain is 0 - 0.5
mm.
Be sure to follow the sequence described below.
X = Available
Adapter
Technical Service Instructions
3. Top adjustment
SIS Adjustment
2. First remove the unit fixing bolt.
3. Remove the three shifting lever
mounting screws, and then remove
the shifting lever unit as shown in
the illustration.
Wire
fixing bolt
Front Drive System
00
Shifting lever mounting screws
In order to realize the best performance, we recommend that the following combination be used.
Series
Rapidfire (Shifting lever)
Outer casing
Front derailleur
Front chainwheel
Chain
Bottom bracket cable guide
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.
XTR
SL-M970
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.
Inboard
Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
Chain guide
FC-M970
CN-7701
SM-SP17 / SM-BT17
When installing the components to
carbon frame/handle bar surfaces, verify
with the manufacturer of the carbon
frame/parts for their recommendation on tightening torque in order
to prevent over tightening that can cause damage to the carbon
material and/or under tightening that can cause lack of fixing
strength for the components.
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
Please note: specifications are subject to change for improvement without notice. (English)
© May 2007 by Shimano Inc. XBC SZK Printed in Japan.
Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
Outboard
Tightening torque:
0.5 - 0.8 N·m {4 - 7 in. lbs.}
Chainwheel
(largest chainring)
SIS-SP41
FD-M970 / FD-M971
4. To assemble, align the shifting lever unit and the bracket and then
secure the shifting lever mounting screws.
■ Be sure to read the service instructions for the
FC-M970 Front Chainwheel in conjunction with these
service instructions.
The shifting lever position can be
adjusted by sliding it to the left or right.
After taking up the initial slack in the cable, re-secure to the front
derailleur as shown in the illustration.
Normal type
5. Be sure to clamp the spring washer, and then tighten the unit
fixing bolt.
Top route type
Tightening torque :
2.5 N·m {22 in. lbs.}
Tightening torque:
2.5 N·m {22 in. lbs.}
Pull
• 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.
Pull
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