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SI-6SE0B-002-00
General Safety Information
Gear shifting operations
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.
• Read these Technical Service Instructions carefully, and keep them in a safe place for later reference.
Note
• The ST-6703/5703 front dual control lever is for use with triple front chainwheels, and cannot be used with double front chainwheel products.
• 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 the bottom bracket cable guide.
• Grease the inner cable and the inside of the outer casing before use to ensure that they slide properly.
• Use a frame with internal cable routing is strongly discouraged as it has tendencies to impair the SIS shifting function due to its high cable resistance.
• A special grease is used for the gear shifting cable. Do not use
DURA-ACE grease or other types of grease, otherwise they may cause deterioration in gear shifting performance.
• Please refer to the Service Instructions for the ST-6700/5700 for details on installation and maintenance.
• Be sure to read these service instructions in conjunction with the service instructions for the FD-6703/5703 before use.
• 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.
Technical Service Instructions SI-6SE0B-002
Lever (b)
Lever (a)
Lever a
Lever a start position
If operation of lever a dose not complete the chainring shift stroke, operate lever a again for the distance (X') to complete that part of the lever stroke (X) which was short.
Full gear shift stroke
Lever (b) will also move when lever (a) is operated, but be careful not to apply pressure to lever (b).
Similarly be careful not to press lever (a) when operating lever (b). Gears will not shift when both levers are pressed simultaneously.
• Lever a : Shifting from the smallest chainring to the intermediate chainring or from the intermediate chainring to the largest chainring
Actual stroke
• Lever b : Shifts from largest chainring to intermediate chainring.
Lever b
Click
Click
• Lever b : Shifts from intermediate chainring to smallest chainring.
Gear shift complete stroke
Click
Click
Gear shift complete stroke
ST-6703 / ST-5703
Installation of the shifting cable
Operate lever b 2 times or more to set the lever to the low position.
2.
Insert the shifting cable so that it protrudes out from the side by about 300 mm.
Front Dual Control Lever
In order to realize the best performance, we recommend that the following combination be used.
Series
Dual control lever
Outer casing
Gears
Front derailleur
Front chainwheel
Rear derailleur (GS Type)
Freehub
Cassette sprocket
Chain
Bottom bracket cable guide
Cable adjuster
ULTEGRA 105
ST-6703 ST-5703
OT-SP41 (SIS-SP41)
30
FD-6703
FC-6703
RD-6700
FH-6700
FD-5703
FC-5703
RD-5700
FH-5700
CS-6700 CS-5700
CN-7801 / CN-6600 / CN-5600
SM-SP17
SM-CA70 / SM-CA50
* Service Instructions in further languages are available at : http://techdocs.shimano.com
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)
© Mar. 2010 by Shimano Inc. XBC SZK Printed in Japan.
Operate at least 2 times
Lever b
1.
Pass the shifting cable straight in from the side as shown in the illustration.
When removing parts in order to replace the inner cable, the work can be carried out more easily if the unit cover is removed as shown in the illustration.
Unit cover
Tightening torque:
0.2 N·m {1.8 in. lbs.}
3.
Pass the inner cable upward through the slit as shown in the illustration.
The outer casing can be routed in two directions: either through cable guide 1
(inside) or cable guide 2 (outside).
Slit
Note:
Be careful not to bend or rub the inner cable while working. Insert the inner cable so that the inner cable drum goes into the winder unit as far as it can go.
Trimming (noise prevention mechanism) operation
Depending on the position of the chain after shifting, the chain may rub against the chain guide outer plate or the chain guide inner plate of the front derailleur, producing a characteristic noise. If this sort of thing happens, you can press lever (a) or lever (b) slightly to move the front derailleur a little way so that it does not touch the chain. This operation is called "trimming". Trimming can be carried out whether the chain is on the largest, intermediate or smallest chainring. If noise occurs when the chain is in one of the positions shown below, carry out trimming to eliminate the noise.
Chain position
Largest chainring
Symptom
Chain contacts outer plate
Trimming operation
Lever operation Front derailleur movement
trimming operation
Smaller sprockets
Intermediate chainring
Outer plate
Lever (a)
Before trimming After trimming
Front derailleur movement
Smallest chainring
Smaller sprockets
Chain
Smaller sprockets
Largest chainring Chain contacts inner plate
Larger sprockets
Intermediate chainring
Larger sprockets
Smallest chainring
Larger sprockets
Inner plate
Chain
Click
(Hits)
Lever (b)
Click
(Hits) trimming operation
Before trimming After trimming
Front derailleur movement
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