Shimano Capreo BB-UN25 Instrukcje serwisowe
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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 pin 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
Silver
TL-CN31/TL-CN22
CN-7701 / CN-HG93
6.5mm
8- / 7- / 6-speed narrow
TL-CN31/TL-CN22 and
chain such as
Black
TL-CN30/TL-CN21
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
End Pin
Link Pin
damaged if it is cut at a place where it has
been joined with a reinforced connecting
pin or an end pin.
• Be careful not to let the cuffs of your clothes get caught in the chain while riding,
otherwise you may fall off the bicycle.
• 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 you may fall off the bicycle.
• Check that there are no cracks in the crank arms before riding the bicycle. If there are
any cracks, the crank arm may break and you may fall off the bicycle.
• Check that the wheels are fastened securely before riding the bicycle. If the wheels
are loose in any way, they may come off the bicycle and serious injury may result.
• 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.
• Read these Technical Service Instructions carefully, and keep them in a safe place for
later reference.
CAUTION
• The components of the F700 Capreo drive system are designed for use with
collapsible-type bicycles with small wheel diameters that are intended for riding on
sealed surfaces.
If they are used with bicycles that are to be ridden on unsealed surfaces or bicycles
with wheels that are larger than 20 inches, the components may become bent or
damaged.
Note
• In addition, if pedaling performance does not feel normal, check this once more.
• Check that there is no looseness in any joints or connections before riding the
bicycle. (BB-FC, FC-PD)
• Do not wash the bottom bracket with high-pressure jets of water.
• If you feel any looseness in the bottom bracket axle, the bottom bracket should be
replaced.
• 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 wheel becomes stiff and difficult to turn, you should lubricate it with grease.
• Do not apply any grease to the inside of the hub, otherwise the grease will come out
again.
• You should periodically wash the sprockets in a neutral detergent and then lubricate
them again. In addition, cleaning the chain with neutral detergent and lubricating it
can be a effective way of extending the useful life of the sprockets and the chain.
• If the chain keeps coming off the sprockets during use, replace the sprockets and the
chain.
• 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.
• Grease the inner cable and the inside of the outer casing before use to ensure that
they slide properly.
• 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
Capreo Drive System
In order to realize the best performance, we recommend that the
following combination be used.
Series
Capreo
Shifting lever
SL-F700-R
Outer casing
SP40 sealed
Rear derailleur
RD-F700
Type
SS / SGS
Front chainwheel
FC-F700
Bottom bracket
BB-UN40 / BB-UN25
Freehub
FH-F700
Gears
9
Cassette sprocket
CS-HG70-S
Chain
CN-HG73
Specifications
Rear Derailleur
Reinforced
Model number
RD-F700
Connecting Pin
Type
SS
Gears
9
Total capacity
17 teeth or less
Largest sprocket
26T
Smallest sprocket
9T
Applicable front chainwheel
FC-F700 (45T)
(chainring tooth configuration)
Cassette sprocket tooth combination
Type
Gears
Group name
HG
9
bc
15, 17, 20, 23, 26T
Front Chainwheel
Model number
FC-F700
Chainwheel teeth
45T
Bolt circle diameter
130 mm
Crank arm length
165, 170 mm
Bottom Bracket
Model number
BB-UN40 / BB-UN25
Spindle length
MM110
LL113
Chain line
46mm
48.5mm
Shell width
68 mm (1.37 X 24 T.P.I.)
(Thread dimensions)
70 mm (M36 X 24 T.P.I.)
t : Chain case thickness
Gear shifting operation
Both lever and button return to the initial lever or button position when they
are released after shifting. When operating lever or button, always be sure
to turn the crank arm at the same time.
To shift from a smaller sprocket to a larger sprocket
[ Lever ]
To shift one step only, press lever to the (1)
Lever
position. To shift two steps at one time, press
to the (2) position. A maximum two-step shift
can be made in this manner.
To shift from a larger sprocket to a smaller sprocket
[ Button ]
Press button once and then release it to shift
one step from a larger to a smaller sprocket.
Installation of the lever
5 mm Allen key
Use a handlebar grip with a maximum
outer diameter of 32 mm.
Install the brake lever in a position where it
will not obstruct brake operation. Do not
SI-6J20B
use in a combination which causes brake
operation to be obstructed.
Tightening torque:
6 - 8 N·m {53 - 69 in. lbs.}
Installation of the Bottom Bracket
Use the special tool (TL-UN74-S)
to install the bottom bracket.
Left
First install the main body,
then the adapter.
Adapter/bottom bracket
tightening torque:
50 - 70 N·m
Apply grease to the
{435 - 608 in. lbs.}
bottom bracket before
installing it.
Installation of the front chainwheel
Tightening torque:
35 - 50 N·m
{305 - 435 in. lbs.}
SGS
9
17 teeth or less
26T
Tighten securely
9T
Installation of the rear derailleur
Tooth combination
When installing, be careful that deformation is not caused by
the B-tension adjustment screw coming into contact with the
9, 10, 11, 13,
dropout tab.
5 mm Allen key
Dropout tab
YL117
117.5
Bracket spindle tightening torque:
50mm
52.5mm + t
8 - 10 N·m {70 - 86 in. lbs.}
Chain length
Add 2 links (with the chain on
Largest sprocket
both the largest sprocket and
the largest chainring)
Chain
Lever initial position
Stroke adjustment and cable securing
1. Top adjustment
Turn the top adjustment screw to adjust so that the guide
pulley is below the outer line of the smallest sprocket when
looking from the rear.
1
2
Button
Guide pulley
2. Connection and securing of the cable
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 the illustration.
Tightening torque:
5 - 7 N·m {44 - 60 in. lbs.}
Note:
Be sure that the cable
is securely in the
groove.
Groove
3. Low adjustment
Turn the low adjustment screw so that the guide pulley
moves to a position directly in line with the largest sprocket.
Bottom bracket
Right
Largest sprocket
Guide pulley
Low adjustment
2
1
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 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
8 mm Allen key
2
(TL-WR38)
2
1
1
adjustment screw
5. SIS Adjustment
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 3rd
When no sound at all is
heard
B-tension
adjustment screw
Tighten the outer cable
Loosen the outer casing
adjusting barrel until the
adjustment barrel until
Large chainring
chain returns to the 2nd
the chain touches the
sprocket. (clockwise)
3rd sprocket and makes
noise. (counter
clockwise)
Outer casing
Outer casing
adjustment barrel
adjustment barrel
Best setting
The best setting is when the shifting
lever is operated just enough to take
Outer line of
smallest sprocket
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
1
2
has been released) and then turn the crank arm
Top adjustment
clockwise. If the chain is touching the 3rd sprocket and
screw
making noise, turn the outer casing adjustment barrel
clockwise slightly to tighten it until the noise stops and
the chain runs smoothly.
For the best SIS performance, periodically lubricate all
power-transmission parts.
Pull
Installation of the sprockets
For each sprocket, the surface that has the group mark
should face outward and be positioned so that the wider
part of each sprocket and the A part (where the groove
width is wide) of the freewheel body are aligned.
A
Wide part
1
2
The groove is
screw
wide at one
place only.
Lock ring
• For installation of the sprockets, use the special tool
(TL-HG09) to tighten the lock ring.
Tightening torque:
30 - 50 N·m {261 - 434 in. lbs.}
Tool
Lock ring
(TL-SR20)
1
2
• To replace the sprockets, use
TL-HG09
B-tension
the special tool (TL-HG09)
and TL-SR20 to remove the
lock ring.
Disassembly
Replacement of the freewheel body
After removing the hub axle, remove the freewheel body fixing
bolt (inside the freewheel body), and then replace the
freewheel body.
Freewheel body
Freewheel body fixing bolt
Disassembly
Assembly
10 mm Allen key
Note:
(TL-WR37)
Do not attempt to
disassemble the freewheel
body, because it may
Tightening torque :
result in a malfunction.
35 - 50 N·m {305 - 434 in. lbs.}
Replacing the indicator /
Replacing the inner cable
Press button to set the lever to the highest position.
Indicator set screws
Indicator
Inner cable
Button
Tightening torque:
0.4 N·m {4 in. lbs.}
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, Osaka 590-8577, Japan
Please note: specifications are subject to change for improvement without notice. (English)
© Apr. 2003 by Shimano Inc. XBC SZK Printed in Japan