FD-4603 - Shimano

FD-4603 - Shimano
SI-5MX0A-001-00
General Safety Information
In order to realize the best performance, we recommend that the following
combination be used.
TIAGRA
Be sure to follow the sequence described below.
Dual control lever
ST-4603
1. Low adjustment
Shifting lever
SL-4603
Series
WARNING
• 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.
• 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.
Brake lever
BL-4600
Outer casing
OT-SP41
Gears
Front derailleur
• 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.
• Use the CN-7801 / CN-6600 / CN-5600 with the FD-4603.
• 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 nextlarger rear sprocket or the one after.
FH-4600
Cassette sprocket
CS-4600
Chain
Smallest
chainring
Chain position
Largest
sprocket
Low adjustment
screw
B
Specifications
Chain guide
inner plate
Type
Band type / Brazed on type
Front chainwheel tooth difference
20 teeth or less
Min. difference between top and
intermediate
11T
Chainstay
angle
Outer casing adjustment barrel
Chain
63° - 66°
Tightening torque:
5 - 7 N·m
{44 - 60 in. lbs.}
45mm
Front shifting (ST-4603)
Pull
Lever b
After taking up the initial slack in the cable, re-secure
to the front derailleur as shown in the illustration.
From large chainring
to small chainring
Lever b
Lever a
Smallest
sprocket
Largest
chainring
Chain guide
outer plate
3. Top adjustment
From small chainring
to large chainring
Lever a
Chain
Set so that the clearance between the chain guide
outer plate and the chain is 0 - 0.5 mm.
6. Troubleshooting chart
After completion of steps 1 - 5, move the shifting lever to check the
shifting. (This also applies if shifting becomes difficult during use.)
Chain position
Smallest
sprocket
Pro-Set alignment block
SI-5MX0A-001
Gear teeth should
come within this
range
FD-4603
Top adjustment
screw
Largest
chainring
Chain guide
outer plate
Chain
Pro-Set gauge
1mm
Front derailleur
4. Cable adjustment using the intermediate
chainring
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.
When making the cable adjustment, place the chain
on the largest sprocket for the rear and the middle
chainring for the front.
Chainwheel
(largest chainring)
Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222
Please note: specifications are subject to change for improvement without notice. (English)
© Dec. 2010 by Shimano Inc. XBC SZK Printed in Japan.
While turning the crank arm, gently operate lever (b) and check that
the front derailleur moves slightly toward the smallest chainring. If the
front derailleur moves by a large amount and the chain is set onto the
smallest chainring at this time, loosen the top adjustment bolt by 1/8th
of a turn. Then, after returning the
chain to its original position, adjust
and check the trimming mechanism.
Top adjustment
screw
Adjust and then install the front derailleur as shown in the illustration.
Do not remove the Pro-Set alignment block at this time.
* Service Instructions in further languages are available at :
http://techdocs.shimano.com
5. Trimming mechanism adjustment and checking
Chain position
Installation of the front derailleur
3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan
Chain
Adjustment is possible at the dual control lever (with cable adjuster).
For details on the adjustment method, refer to the Service
Instructions for the ST-4600.
While pulling the inner cable, tighten the wire fixing
bolt with a 5 mm allen key to secure the cable.
Rear
sprockets
One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003
Chain guide
inner plate
A
2. Connection and securing of cable
S (ø28.6mm),
M (ø31.8mm), L (ø34.9mm)
Chain line
Technical
Service Instructions
Intermediate
chainring
SM-SP17
Chainstay angle (C)
• For smooth operation, 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.
• 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.
Adjust the cable tension by using the outer casing adjustment barrel
so that the clearance between the chain guide inner plate and the
chain is 0 - 0.5 mm.
Pro-Set alignment block
CN-7801 / CN-6600 / CN-5600
Front derailleur
installation band diameter
Front
chainrings
Largest
sprocket
RD-4600-GS
Freehub
Largest
chainring
Adjustment point
FC-4603
Rear derailleur
Intermediate
chainring
Chain position
FD-4603
Front chainwheel
Smallest
chainring
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.
30
Bottom bracket cable guide
Note
SIS adjustment
Tightening torque:
5 - 7 N·m {44 - 60 in. lbs.}
Chain guide
Note: There are 2 derailleur positions for the intermediate
chainring. When making the cable adjustment, make
sure that the derailleur is in the inner side (toward
small chainring) of the two positions. Locate the
derailleur to this position by shifting from the largest
to the intermediate chainring (recommended) or by
shifting from the small to the intermediate chainring,
then gently press lever (b) until a small click is felt
(to position the derailleur to the inner side of the
intermediate chainring).
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 1/8 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 1/8 turn).
If there is interference between the chain Loosen the low adjustment screw
and the front derailleur inner plate when
counterclockwise (about 1/8 turn).
the chain is on the smallest chainring and
the largest sprocket
Be sure to read these service instructions in conjunction with the service
instructions for the ST-4603 / SL-4603 before use.
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