FD-2203

FD-2203
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Technical Service Instructions SI-5GF0B
FD-2203
Front derailleur
General Safety Information
WARNING
• 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.
• Be careful not to let the cuffs of your clothes get
caught in the chain while riding, otherwise you may
fall off the bicycle.
• Read these Technical Service Instructions carefully,
and keep them in a safe place for later reference.
Note
• 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.
• When the chain is in the position shown in the
illustration, the chain may contact the front
chainrings or front derailleur and generate noise.
If the noise is a problem, shift the chain onto the
next-larger rear sprocket or the one after.
Front chainrings
Rear sprockets
• If attaching the FD-2203 (brazed-on type) to a seat
tube with a thickness of more than 31.8 mm, the
derailleur may come into contact with the seat tube
and interfere with normal gear shifting performance.
• For smooth operation, always be sure to use the
specified outer casing and the bottom bracket cable
guide.
• Grease the inner cable and the inside of the outer
casing before use to ensure that they slide properly.
• 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.
• For the chain, be sure to use only the Shimano
narrow type chain. The wide type chain cannot be
used.
• 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.
In order to realize the best performance, we
recommend that the following combination be used.
Shifting lever
ST-3303
Outer casing
SP40
Gears
24
Front derailleur
FD-2203
Front chainwheel
FC-2203
Bottom bracket
BB-UN25 (113mm)
Rear derailleur
RD-2200
Freehub
FH-2200
Cassette sprocket
CS-HG50-8
Chain
CN-HG50
Bottom bracket cable guide
SM-SP17
Specifications
Type
Band type / Brazed on type
Front chainwheel tooth
difference
22 teeth or less
Min. difference between top
and intermediate
10T
Front derailleur
installation band diameter
S (28.6mm), M (31.8mm)
Chainstay angle (C)
63° - 66°
Chain line
45mm
Stroke
A
Chainstay
angle
A'
Installation of the front derailleur
Adjust and then install the front derailleur 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
SG
A-52
Pro-Set gauge
1mm
3mm
The level section of the chain
guide outer plate should be
directly above and parallel to
the largest chainring.
Secure using a 5mm Allen key.
Tightening torque:
5 - 7 N·m
{44 - 60 in. lbs.}
Chainwheel
(largest chainring)
Chain guide
SIS adjustment
Be sure to follow the sequence described below.
1. Low adjustment
First remove the Pro-Set alignment block .Next, set so
that the clearance between the chain guide inner plate
and the chain is 0-0.5mm.
4. Adjustment of the intermediate chainring
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 position
Largest
sprocket
Chain position
Smallest
chainring
Largest
sprocket
Intermediate
chainring
Pro-Set alignment block
B
B
A
A
Chain guide
inner plate
Outer casing adjustment bolt
Chain
B A
Front shifting (ST-3303)
Low
adjustment
screw
A
B
Lever [
b
From large
chainring to
small chainring
Chain guide
inner plate
Chain
Lever [
a
2. Connection and securing of cable
While pulling the inner cable, tighten the wirw fixing
bolt with a 5 mm allen key to secure the cable.
Tightening torque:
5 - 7 N·m
{44 - 60 in. lbs.}
Pull
After taking up the initial slack in the cable, re-secure
to the front derailleur as shown in the illustration.
3. Top adjustment
Set so that the clearance between the chain guide
outer plate and the chain is 0-0.5 mm.
Chain position
Smallest
sprocket
Largest
chainring
From small
chainring to
large chainring
Lever [
a
5. Troubleshooting chart
After completion of steps 1 - 4, 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).
If there is interference between the chain and front Tighten the outer casing adjustment
barrel clockwise (1 or 2 turns).
derailleur inner plate when the rear sprocket is
shifted to the largest sprocket when the
chainwheel is at the intermediate chainring
position.
If the chain falls to the bottom bracket side.
Tighten the low adjustment screw
clockwise (about 1/2 turn).
Be sure to read these service instructions in conjunction with the service
instructions for the ST-3303 before use.
B A
Top
adjustment
screw
B
A
Chain guide
inner plate
Chain
®
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
Please note: specifications are subject to change for improvement without notice. (English)
© Dec. 2002 by Shimano Inc. XBC SZK Printed in Singapore.
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