Front Drive System

Front Drive System
< FD-C201-E / FD-C101-E >
Chainwheel
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 pin 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.
Reinforced
connecting pin
Chain
9-speed super narrow chain
such as
CN-7700 / CN-HG92
8- / 7- / 6-speed narrow
chain such as
CN-HG50 / CN-IG51
Silver
Chain tool
FC-C050
Chainwheel tooth
combination
42-34-24T
Crank arm length
160, 170 mm
BC 9/16" x 20 T.P.I.
Pedal thread dimensions
Front Derailleur
TL-CN31/TL-CN22
TL-CN31/TL-CN22 and
TL-CN30/TL-CN21
7.1mm
• 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
Reinforced
Connecting Pin
Link Pin
End Pin
connecting pin or an end pin.
RA-A
E
C
DU
• Obtain, read and carefully service instructions when installing parts. A loose, worn, or
damaged parts may cause injury to the rider.
We strongly recommend that only genuine Shimano replacement parts be used.
• Apply grease to the bottom bracket before installing it.
• For smooth operation, use the specified outer casing and
bottom bracket cable guide.
• This front derailleur is for triple front chainwheel use only. It
cannot be used with the double front 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
Outer casing holders
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 any questions regarding methods of installation,
adjustment, maintenance or operation, please contact a
professional bicycle dealer.
• Refer to the Rear Drive System Service Instructions for
details on installing the CI-Deck.
¤ Adapter
Largest sprocket
Chain length
Largest sprocket
Largest chainring
Marking
Cutting the outer casing
Chain gauge
TL-CN24
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
Inner link
A
B
Correct
SHIMANO JAPAN
CHAIN GAUGE
Left
SIS 3-gears
SIS 3-gears
SB-C050-L, SB-C051-L
SB-C050-LN, SB-C051-LN
Outer casing
SIS40
SIS40
Front derailleur
FD-C050
FD-C050
Front chainwheel
FC-C050
FC-C050
Bottom bracket
BB-TY30
BB-TY30
Chain
CN-UG50
CN-UG50
SM-SP18 / SM-BT18
SM-SP17 / SM-BT17
SM-SP18 / SM-BT18
SM-SP17 / SM-BT17
Specifications
Cut off the excess length of inner cable
and then install the inner end cap.
Note:
Pass the cable
through as shown
in the illustration.
Incorrect
Outer link
Model number
FD-C050
Applicable bottom bracket
BB-TY30
Applicable front chainwheel
FC-C050
Applicable to both normal type and top route type
S
Top gear tooth
42T
Front chainwheel tooth difference
18T
Min. difference between top
and intermediate
8T
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).
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).
If the chain falls to the bottom bracket
side.
Tighten the low adjustment
screw clockwise (about 1/2 turn).
Replacing the inner cable
1. Remove the screw, and then remove the cover.
2. Pull out the inner cable as shown in Figure 1, and then install the
Mounting the shifting lever
Tightening torque:
5 - 7 Nm {44 - 60 in. lbs.}
5 mm allen key
Adapter
new inner cable. At this time, check that the inner cable drum is in
the position shown in Figure 2, and then replace the cover.
Main body
Screw
Adapter / bottom bracket tightening torque:
50 - 70 Nm {435 - 608 in. lbs.}
Front chainwheel tightening torque:
35 - 50 Nm {305 - 435 in. lbs.}
After taking up the initial slack in the cable, re-secure to the
front derailleur as shown in the illustration.
Normal type
Adjust and then install the front derailleur as shown in the
illustration. Do not remove the Pro-Set alignment block at this
time.
Front Derailleur
Figure 1
Top route type
Cover
Pull
Tightening torque:
6 - 8 Nm {53 - 69 in. lbs.}
5 mm Allen Key
Pull
Inner cable
Pro-Set alignment block
Gear teeth should
come within this
range
Pro-Set gauge
Gear shifting operation
3. Top adjustment
Set so that the clearance between the chain guide outer
plate and the chain is 0-0.5 mm.
Figure 2
1 mm
Inner cable drum
3 mm
Front derailleur installation band diameter
S, M, L
Chainstay angle (a)
66°- 69°
Applicable chain line
47.5 mm,50 mm
Installation band diameters:
S [ 28,6 mm ], M [ 31,8 mm ], L [ 34,9 mm ]
(Use the adapter for S and M sizes.)
B
Chainstay angle
Bottom Bracket
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.
BB-TY30
D-NL
Spindle length
122.5 mm
Chain line
47.5 mm
Applicable front chainwheel
FC-C050
A
Pedaling
becomes heavier
Chain position
Chainwheel
(largest
chainring)
Chain guide
Stamped marking
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.
Front chainwheel
REVOSHIFT
Model number
After completion of steps 1 - 4, move the shifting lever to check the
shifting. (This also applies if shifting becomes difficult during use.)
Chain
Install using the TL-UN74-S special tool. First install the main
body, then the adapter. After this, use an 8 mm Allen key to
install the front chainwheel.
Right
B
Inserting the inner cable
Add 2 links (with the chain on
both the largest sprocket and
the largest chainring)
1=2.38mm
TL-CN24
ID-C050
A
Chain guide
inner plate
2. Securing the inner cable
SHIMANO JAPAN
CHAIN GAUGE
ID-C050
Chain
5. Troubleshooting chart
1=2.38mm
TL-CN24
C050
Smallest chainring
Tightening torque:
5 - 7 Nm {44 - 60 in. lbs.}
Smallest sprocket
Pedaling becomes
lighter
B A
Largest chainring
Top adjustment
screw
Chain
Chain guide
outer plate
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.
®
One Holland Irvine CA 92618 U.S.A. Phone 949-951-5003
Industrieweg 24 NL-8071 CT Nunspeet Holland Phone 31-341-272222
77 Oimatsu-cho 3-cho Sakai Osaka 590-8577 Japan Phone 0722-23-3243
Thread dimensions
A
Outer casing adjustment barrel
Connecting pin
C050
B
Chain guide
inner plate
Chain
Installation of the Front Derailleur,
Bottom Bracket and Front Chainwheel
In order to realize the best performance, we recommend that
the following combination be used.
Intermediate
chainring
Chain position
Adapter / bottom bracket tightening torque:
50 - 70 Nm {435 - 608 in. lbs.}
Front chainwheel tightening torque:
35 - 50 Nm {305 - 435 in. lbs.}
1=2.38mm
TL-CN24
SI-F800A
Before use, read these instructions carefully, and follow them for correct use.
Chain position
Largest
sprocket
Low adjustment
screw
⁄ Bottom Bracket
A, B Q 0.2mm
Bottom bracket
cable guide
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.
B A
For chains, insert the chain gauge (TLCN24) into the inner link which is next
to the chain connecting pin to check
that the inner link width is correct.
Check that the connecting pin
pro-trudes past the outer link by
the same amount on both sides,
2.38mm
and that the amount of
Connecting
pin
protrusion is 0.2 mm or more.
Front Drive System
Gears
1. Low adjustment
Pro-Set
alignment block
SHIMANO JAPAN
CHAIN GAUGE
SERVICE INSTRUCTIONS
CI-DECK
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.
Be sure to follow the sequence described below.
‹ Front Chainwheel
Checking the chain connection
Series
4. Adjustment of the intermediate chainring
SIS adjustment
Note
6.5mm
Black
Model number
Use the special tools (TL-UN65 and TL-UN74-S) to install the
bottom bracket ⁄ and the front derailleur so that they face as
shown in the illustration. Install the adapter ¤, and then use
the cotterless crank extractor (TL-FC10) to install the front
chainwheel.
BC 1.37 X 24 T.P.I. (68, 73 mm)
M36 X 24 T.P.I. (70 mm)
Please note: specifications are subject to change for improvement without notice. (English)
© May. 2000 by Shimano Inc. XBC SZK Printed in Singapore
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