Shimano RD-M751 Handbuch

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
Reinforced Connecting Pin
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
End Pin
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.
• 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
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-M751/RD-M571/
RD-M511
In order to realize the best performance, we recommend that the following combination be used.
Series
Rapidfire M9 (Shifting lever) SL-M751
Outer casing
Rear derailleur RD-M751
Type
Freehub FH-M765 / FH-M760
Gears
Cassette sprocket CS-M760
Chain CN-HG93
Bottom bracket guide
Link Pin
Specifications
Rear Derailleur
Model number RD-M751 / RD-M571 / RD-M511
Type
Gears
Total capacity
Largest sprocket
Smallest sprocket
Front chainwheel tooth difference
These Service Instructions describe the operation method when using the Rapidfire SL-M751/M571/M511 in
combination with the RD-M751/M571/M511 top normal-type rear derailleur. If using in combination with the RD-M760/
M580/M530 reverse spring-type derailleur, the operations and indicator displays will be reversed.
Gear shifting operation
Both lever (A) and lever (B) always return to the initial position when they are released after shifting. When operating one of
the levers, always be sure to turn the crank arm at the same time.
To shift from a small sprocket to
a larger sprocket (Lever A)
To shift one step only, press lever (A) to the (1) position.
To shift two steps at one time, press to the (2) position.
Lever (A) initial position
Installation of the lever
Use a handlebar grip with a maximum outer diameter of 32 mm.
• Install the shifting lever in a position where it will not obstruct
brake operation and gear shifting operation.
• Do not use in a combination which causes brake operation to be
obstructed.
• 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.
Installation of the rear derailleur
When installing, be careful that deformation is not caused
by the B-tension adjustment screw coming into contact
with the dropout tab.
Bracket spindle Tightening torque :
8 - 10 Nm {70 - 86 in. lbs.}
SI-5VV0B
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
Rear derailleur
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.
XT LX DEORE
SL-M571 SL-M511
SIS-SP41
RD-M571 RD-M511
SGS / GS SGS
FH-M585 / FH-M580 FH-M530 / FH-M535
9
CS-M580 CS-HG50-9
CN-HG73 CN-HG53
SM-SP17 / SM-BT17
Adjustment
1. Top adjustment
Turn the top adjustment screw to adjust so
RD-M751 / RD-M571
that the guide pulley is in line with the outer
SGS GS line of the smallest sprocket when looking
from the rear.
9 9
45T 33T
34T 34T
11T 11T
22T 22T
2. Connection and securing of the inner cable
Operate lever (B) 8 or more times to set the lever
to the highest position, check on the indicator that
the highest position is correct, and then install and
adjust the inner cable.
Install the inner hole cover by turning it as
To shift from a large sprocket to
shown in the illustration until it stops.
a smaller sprocket (Lever B)
Do not turn it any further than this, otherwise it
may damage the screw thread. In addition, if
Press lever (B) once to shift one step from a larger to a
the unit cover becomes bent, it may cause the
smaller sprocket.
unit cover to get in the way of the feed lever
and prevent the feed lever from operating
correctly.
If the feed lever does not return correctly,
loosen the inner hole cover slightly, and then
move the feed lever and the unit cover apart
and check if this improves the returning of the
feed lever.
Lever (B)
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.
Tightening torque :
5 N·m {44 in. lbs.}
Attach the same outer end cap to the cut
end of the outer casing.
5 mm Allen key
Connect the cable to the rear derailleur and,
after taking up the initial slack in the cable,
re-secure to the front derailleur
as shown in the illustration.
5 mm Allen key
B-tension
adjustment screw
Dropout tab
3. Low adjustment
Chain
Largest Largest
sprocket chainring
A'
4. How to use the B-tension adjustment screw
Add 2 links (with the chain on
both the largest sprocket and
A
the largest chainring)
Outer line of
smallest sprocket
1
2
1 2
Guide pulley
5. SIS Adjustment
Top adjustment
screw
Lever (B)
Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
Unit cover
Feed lever
Inner hole cover
Tightening torque :
0.3 - 0.5 N·m {3 - 4 in. lbs.}
For the best SIS performance, periodically lubricate all
power-transmission parts.
Outer end cap
Note: Be sure that the cable is
securely in the groove.
Pull
Groove
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)
© Jun. 2006 by Shimano Inc. XBC SZK Printed in Singapore.
Turn the low adjustment screw so that the guide pulley moves to
a position directly in line with the largest sprocket.
Largest
sprocket
1 2
Guide pulley
Low adjustment
2 1
screw
Mount the chain on the smallest chainring and the largest
sprocket, and turn the crank arm backward. Then turn the
B-tension adjustment screw to adjust the guide pulley as close to
the sprocket as possible but not so close that it touches. Next,
set the chain to the smallest sprocket and repeat the above to
make sure that the pulley does not touch the sprocket.
Largest sprocket Smallest sprocket
2
2
1 2
1
B-tension
adjustment screw
1
Operate the shifting lever several times to move the chain to the
2nd sprocket. Then, while pressing the lever just enough to take
up the play in the lever, turn the crank arm.
When shifting to When no sound
3rd at all is heard
Outer casing
adjustment barrel
Outer casing
adjustment
barrel
Tighten the outer casing Loosen the outer casing
adjustment barrel until the adjustment barrel until the
chain returns to the 2nd chain touches the 3rd sprocket
sprocket. (clockwise) and makes noise. (counter
clockwise)
Best setting
The best setting is when the shifting lever is
operated just enough to take up the play and the
chain touches the 3rd sprocket and makes noise.
* Return the lever to its original position (the position where
the lever is at the 2nd sprocket setting and it has been
released) and then turn the crank arm clockwise. If the
chain is touching the 3rd sprocket and making noise, turn the outer
casing adjustment barrel clockwise slightly to tighten it until the noise
stops and the chain runs smoothly.
Operate lever to change gears, and check that no noise occurs
in any of the gear positions.
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.