Shimano RD-M760 Service Instructions

General Safety Information
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 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.
Reinforced
Chain Chain tool
connecting pin
9-speed super narrow
chain such as TL-CN32 / TL-CN23
Silver
CN-7701 / CN-HG93
6.5mm
8- / 7- / 6-speed narrow
chain such as TL-CN32 / TL-CN23
Black
CN-HG50 / CN-IG51
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 connecting pin or an
end pin.
• 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.
• Obtain and read the service instructions carefully prior to installing the parts. Loose, worn, or damaged
parts may cause injury to the rider. 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
• 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 clean the derailleur and lubricate all moving parts (mechanism and pulleys).
• If gear shifting adjustment cannot be carried out, check the degree of parallelism at the rear end of the
bicycle. Also check if the cable is lubricated and if the outer casing is too long or too short.
• If you hear abnormal noise as a result of looseness in a pulley, you should replace the pulley.
• If the chain keeps coming off the sprockets during use, replace the sprockets and the chain.
• Adjust the RD-M760/M580 reverse spring type rear derailleur from the low side.
• 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.
• Always be sure to use the sprocket set bearing the same group marks. Never use
in combination with a sprocket bearing a different group mark.
• 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.
• Make sure that the gear shifting cable and the brake cable do not obstruct each
other during braking operations. If they do obstruct, it may interfere with braking.
Install the cables so that they still have some slack in them even when the
handlebars are turned fully in either direction.
• A special grease is used for the gear shifting cable (SIS-SP41). Do not use DURA-ACE grease or other
types of grease, otherwise they may cause deterioration in gear shifting performance.
• Grease the inner cable and the inside of the outer casing before use to ensure that they slide properly.
• For smooth operation, use the specified outer casing and the bottom bracket cable guide.
• Operation of the levers related to gear shifting should be made only when the front chainwheel is
turning.
• 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
RD-M760
Rear derailleur
RD-M580
In order to realize the best performance, we recommend that the following combination be used.
Series
DUAL CONTROL lever
Outer casing
Rear derailleur
Type
Freehub
Gears
Cassette sprocket
Chain
Bottom bracket guide
Specifications
Reinforced Connecting Pin
Rear Derailleur
Model number
Type
End Pin Link Pin
Gears
Total capacity
Largest sprocket
Smallest sprocket
Front chainwheel tooth difference
These Service Instructions describe the operation method when using the ST-M766/M761/M765/M760, ST-M580/M585 DUAL CONTROL
lever in combination with the RD-M760/M580 reverse spring-type rear derailleur. If using in combination with a top normal-type derailleur,
the operations and indicator displays will be reversed.
Operating the levers
I Operating the brake lever
Group marks
Adjusting the grip width
It is recommended that you adjust the grip widths of the levers to
the most comfortable widths for gear shifting and braking.
Becomes Becomes
wider narrower
Becomes
2 mm
wider
Allen key
ST-M765 / ST-M766 ST-M760 / ST-M761
ST-M585 ST-M580
Installation of the rear derailleur
When installing, be careful not to let the B-tension adjustment
screw come into contact with the dropout tab, otherwise
deformation may result.
Do not remove the Pro-Set alignment block at this time.
Bracket spindle Tightening torque :
8 - 10 N·m {70 - 86 in. lbs.}
5 mm Allen key
SI-5VJ0B
Dropout tab
XT LX
ST-M766 / ST-M761 / ST-M765 / ST-M760 ST-M580 / ST-M585
SIS-SP41 SIS-SP41
RD-M760 RD-M580
SGS / GS SGS / GS
FH-M760 / FH-M765 FH-M580 / FH-M585
9 9
CS-M760 CS-M580
CN-HG93 CN-HG73
SM-SP17 / SM-BT17 SM-SP17 / SM-BT17
RD-M760 / RD-M580
SGS GS
9
45T 33T
34T 34T
11T 11T
22T 22T
I Gear shifting operation
The lever always returns to the initial position when it is released after
shifting. When operating the lever, always be sure to turn the crank
arm at the same time.
To shift from a large sprocket to a smaller sprocket
To shift one step only, press lever to the (1) position. To shift two steps
at one time, press to the (2) position. A maximum two-step shift can be
made in this manner.
Lever initial position
1st joint
To shift from a small sprocket to a larger sprocket
Approx.
2 mm Press lever once to shift one step from a smaller to a larger sprocket.
Lever end
Lever initial position
Becomes
narrower
Auxiliary release lever
Chain length on bicycles
with rear suspension
The length of A will vary depending on the movement of the rear
suspension. Because of this, an excessive load may be placed on the
drive system if the chain length is too short. Set the length of the
chain by adding two links to the chain when the rear suspension is at
a position where dimension "A" is longest and the chain is on the
largest sprocket and the largest chainring. If the amount of movement
of the rear suspension is large, the slack in the chain may not be
taken up properly when the chain is on the smallest chainring and
smallest sprocket.
B-tension
adjustment screw
Largest
sprocket
A'
Add 2 links (with the chain on
A
both the largest sprocket and
the largest chainring)
Installation of the lever
Use a handlebar grip with a
maximum outer diameter of 32 mm.
Tightening torque :
6 - 8 N·m {53 - 69 in. lbs.}
In the case of carbon handlebars, it
may be necessary to lower the
tightening torque in order to prevent
damage to the handlebar.
Please consult the bicycle or handlebar manufacturer regarding the
appropriate level of tightening torque for carbon handlebars.
SIS Adjustment
Installation of the chain
Install the chain with the Pro-Set
alignment block still attached.
After installing, remove the Pro-Set
alignment block.
Turn the crank arm to set the
derailleur to the low position.
Pro-Set alignment block
1. Low adjustment
Turn the low adjustment screw
so that the guide pulley moves
to a position directly in line with
the largest sprocket.
Largest
sprocket
Guide pulley
Low adjustment
2 1
2. Top adjustment
Turn the crank arm while
Outer line of
smallest sprocket
pulling the derailleur with your
hand to move the derailleur to 1 2
the top position, and then turn
the top adjustment screw to
adjust so that the guide pulley
Guide pulley
is in line with the outer line of
the smallest sprocket when
Top adjustment
looking from the rear.
Turn the crank arm to set the
derailleur to the low position.
3. Connecting and securing the inner cable
< XT >
Operate lever eight 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.
Lever
Inner hole cover
Install the inner hole cover by turning it Inner hole cover
as shown in the illustration until it
stops.
Do not turn it any further than this,
otherwise it may damage the screw
thread.
Tightening torque :
0.3 - 0.5 N·m {3 - 4 in. lbs.}
< LX >
Operate lever eight times or more, and check on the indicator that
the lever is at the lowest position. Then remove the cover and
connect the inner cable.
Cover
Inner cable
Lever
Connect the inner cable to
the derailleur as shown in
Note: Be sure that the cable is
the illustration.
securely in the groove.
Groove
Chain
Largest
chainring
Connect the cable to the rear derailleur and,
after taking up the initial slack in the cable,
re-secure to the rear derailleur as shown in
Pull
the illustration.
Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
Cutting the outer casing
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
Outer end cap
of the outer casing.
5 mm Allen key
Be careful not to bend
The sealed cap with tongue
Rubber shield
and the rubber shield should
be installed to the outer
Sealed cap with tongue
casing stopper of the frame.
Rubber shield
* If the rear derailleur moves to a large degree, such as in
bicycles with rear suspension, it is recommended that you
replace the cap with the
accessory aluminum cap.
Derailleur side
The end of the outer casing
which has the aluminum cap
Aluminum cap
should be at the derailleur side.
4. How to use the B-tension adjustment screw
Mount the chain on the smallest chainring and the largest
sprocket, and turn the crank arm backward. Then turn the
B-tension adjustment
Largest sprocket Smallest sprocket
1 2
screw to adjust the guide
2
2
pulley as close to the
screw
sprocket as possible but not
so close that it touches.
Next, set the chain to the
smallest sprocket and
1
repeat the above to make
1
sure that the pulley does
B-tension
not touch the sprocket.
1 adjustment screw
1 2
5. SIS Adjustment
Push lever while turning the crank arm to move the derailleur to
screw the largest sprocket. Then operate lever once to move the
derailleur to the 2nd-gear sprocket. After this, operate lever just
as far as the extent of play, and then turn the crank arm.
2 3 2 3
When changing When no
to 3rd noise is
heard at all
2 3 2 3
Adjustment bolt Adjustment bolt
Inner cable
Turn the cable adjustment bolt Turn the cable adjustment bolt
clockwise to tighten it until the counterclockwise to loosen it until
chain returns to the 2nd sprocket. the chain touches a sprocket and
generates noise.
* Turn the adjustment bolt together
with the outer casing adjustment * Turn the adjustment bolt together with
barrel cover.
the outer casing adjustment barrel
cover.
Best setting
The best setting is when the cable adjustment bolt is tightened
(turned clockwise) until noise occurs without lever being
operated, and then loosened (turned counterclockwise) 90 - 180
degrees from that point.
Operate lever to change gears, and check that no noise occurs
in any of the gear positions.
For the best SIS performance, periodically lubricate all
power-transmission parts.
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.
These service instructions are
printed on recycled paper.
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, Osaka 590-8577, Japan
Please note: specifications are subject to change for improvement without notice. (English)
© Apr. 2006 by Shimano Inc. XBC SZK Printed in Japan
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