Front Drive System

General Safety Information
• 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
9-speed super narrow chain
such as
CN-7701 / CN-HG93
8- / 7- / 6-speed narrow
chain such as
CN-HG50 / CN-HG40
be directly above and parallel to the largest chainring.
EZ FIRE Plus (Shifting lever)
WARNING
Reinforced
connecting pin
Silver
Chain tool
Black
7.1mm
ST-EF40-L
Gears
SIS 3-gears
• The reinforced connecting pins cannot be used with the UG chain, otherwise the connections will not move properly
and noise will occur.
• Apply grease to the thread section of the bottom bracket and to the inside thread of the adapter before installing the
bottom bracket.
• 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.
• 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.
• Operation of the levers related to gear shifting should be made only when the front chainwheel is turning.
• For smooth operation, use the specified outer casing and bottom bracket cable guide.
• To ensure the best performance, be sure to use only the specified type of chain. The wide type chain cannot be used.
• For maximum performance we highly recommend Shimano lubricants and maintenance products.
• Parts are not guaranteed against natural wear or deterioration resulting from normal use.
• For any questions regarding methods of installation, adjustment, maintenance or operation, please contact a
professional bicycle dealer.
Note:
Pass the cable through
as shown in the
illustration.
Chainstay angle
Tightening torque:
5 - 7 N·m {44 - 60 in. lbs.}
Chain guide
Front Derailleur
Model number
FD-C051
FD-C050
FD-TY10
FD-TZ31
FD-TZ30
FD-TZ21
FD-TZ20
Front derailleur installation
band diameter (Normal type)
S, M, L
S, M
S, M
S, M
Front derailleur installation
band diameter (Top route type)
S, M, L
S, M
S, M
S, M
Chainstay angle (a)
66°- 69°
66°- 69°
66°- 69°
66°- 69°
Chain length
Front chainwheel
Note
< FD-C051 / C050 >
key (C051, C050).
Model number
TL-CN32 / TL-CN27
Reinforced Connecting Pin
• 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.
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 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.
Chainwheel
(largest chainring)
3. Secure using a 9 mm spanner (TY10) or a 5 mm Allen
TL-CN32 / TL-CN27
6.5mm
Cut off the excess length of inner cable and then install the inner end cap.
2. The level section of the chain guide outer plate should
Specifications
Model number
Front chainwheel tooth combination
FC-M151
48T-38T-28T
42T-34T-24T
Pedal thread dimensions
Largest
chainring
170 mm
BC 9/16" X 20 T.P.I. (English thread)
BC 1.37" X 24 T.P.I. (68, 73 mm)
BC 1.37" X 24 T.P.I. (68, 73 mm)
FD-C051
FD-C050/FD-TY10
Type
Chain line
Spindle length
Shell width
Stamped marking
Thread dimensions
Triple
47.5 mm
122.5 mm
68 mm
D-NL
BC1.37 X 24 T.P.I.
Top route type
Normal type
90°
Tightening torque:
5 - 7 N·m {44 - 60 in. lbs.}
Right angle to the ground
Chain
3. Adjustment of cable tension
After taking up the initial slack in the cable, re-secure to the front derailleur as
shown in the illustration.
Mounting the shifting lever
Bottom Bracket
Wire fixing bolt
While firmly pulling the cable, tighten the fixing bolt with a 9 mm spanner
(TY10) or a 5 mm Allen key (C051, C050) to secure the cable.
Chain
Tension pulley
170 mm
Applicable front derailleur
Largest
chainring
Smallest
sprocket
Guide pulley
BC 9/16" X 20 T.P.I. (English thread)
Bottom bracket cup thread dimensions
5 mm allen key
< SS >
Add 2 links (with the chain on both
the largest sprocket and the largest
chainring)
Largest
sprocket
FC-M151
Crank arm length
< GS >
Normal type
Use a handlebar grip with a maximum outer diameter of 32 mm.
Top route type
Pull
Pull
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.
Do not operate lever (A) and lever (B) together.
If you cannot shift from a large chainring to a smaller chainring, operate lever (A).
4. Top adjustment
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.
Tightening torque:
2.5 - 3.5 N·m {22 - 31 in. lbs.}
FD-TY10
Set so that the clearance between the
chain guide outer plate and the chain
is 0 - 0.5 mm.
Top adjustment
screw
Chain guide
outer plate
Chain position
Smallest
sprocket
Largest
chainring
FD-C051 / C050
Adjustment
Chain
Be sure to follow the sequence described below.
1. Low adjustment
Lever (A) initial position
Lever (B)
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.
Low
adjustment
screw
Chain position
Install using the special tool TL-UN74-S.
First install the main body, then the adapter.
Front Chainwheel
Largest
sprocket
Set the chain onto the largest sprocket, and at the front, move the chain from
the largest chainring to the intermediate chainring. Adjust using the cable
adjusting bolt so that the clearance between the chain guide inner plate and the
chain is 0 - 0.5 mm.
FD-TY10
Pro-Set alignment block
Installation of the bottom bracket
5. Adjustment of the intermediate chainring
FD-C051 / C050
Chain position
Smallest
chainring
Largest
sprocket
Chain guide
inner plate
Intermediate
chainring
Chain guide
inner plate
Chain
Tightening torque:
50 - 70 N·m {435 - 608 in. lbs.}
Chain
Outer casing adjustment barrel
2. Connection and securing of cable
Adapter
Technical Service Instructions
Operate lever (B) two times or more, and check on the indicator that the lever is
at the lowest position. Then remove the inner hole cover and connect the inner
cable.
Bottom Bracket
SI-6NVFA-003
Front Drive System
After completion of steps 1 - 5, 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.
Tighten the top adjustment screw
clockwise (about 1/4 turn).
If shifting is difficult from the
intermediate chainring to the largest
chainring.
Loosen the top adjustment screw
counterclockwise (about 1/8 turn).
If shifting is difficult from the
intermediate chainring to the
smallest chainring.
Loosen the low adjustment screw
counterclockwise (about 1/4 turn).
If there is interference between the
chain and the front derailleur inner
plate at the largest chainring.
Tighten the top adjustment screw
clockwise (about 1/8 turn).
If there is interference between the
chain and the front derailleur outer
plate at the largest chainring.
Loosen the top adjustment screw
counterclockwise (about 1/8 turn).
If the intermediate chainring is
skipped when shifting from the
largest chainring.
Loosen the outer casing adjustment
barrel counterclockwise (1 or 2 turns).
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.
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.
Tighten the outer casing adjustment
barrel clockwise (1 or 2 turns).
Attach the same outer end cap to the
cut end of the outer casing.
If shifting is difficult from the largest
chainring to the intermediate
chainring.
Installation of the front chainwheel
Use the cotterless crank extractor (TL-FC10) to install the
front chainwheel.
S
Inner hole cover
G
NA
n
F
C or
h
a
i
OW
y
RRn l
o
In order to realize the best performance, we recommend that the following combination be used.
Series
Lever (B)
3-gears
MA
Left
6-gears
NO
I MA
3-gears
NO
SG
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.
SG
E
-3
Bottom Bracket
0
E-
Left
ST-EF40-L
Outer casing
Front derailleur
SIS
FD-C051/FD-C050/FD-TY10
Front chainwheel
FC-M151
Bottom bracket
BB-UN26
Chain
CN-UG51
Bottom bracket cable guide
40
Shifting lever
SM-SP18/SM-BT18
Marking
Securely tighten
Cutting the outer casing
Installation of the front derailleur
1. Adjust and then install the front derailleur
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.
Inner cable
Inserting the inner cable
SH
7-gears
SHI
Gears
Tightening torque:
35 - 50 N·m {305 - 435 in. lbs.}
Tourney (SIS)
Right
6. Troubleshooting chart
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
Outer end cap
If the chain falls to the bottom
bracket side.
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)
© Aug. 2008 by Shimano Inc. XBC IZM Printed in Singapore.
Tighten the low adjustment screw
clockwise (about 1/2 turn).