Page 1
Junction [A]
UM-3HR0B-000
One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003
High Tech Campus 92, 5656 AG Eindhoven, The Netherlands Phone: +31-402-612222
Roebuck Way, Knowlhill, Milton Keynes, Buckinghamshire, MK5 8HL, United Kingdom
3-77 Oimatsu-cho, Sakai-ku, Sakai City, Osaka 590-8577, Japan
User's Manual
Rear Derailleur (DI2)
IMPORTANT NOTICE
•Contact the place of purchase or a distributor for information on
installation, adjustment, and replacement of the products which are not
found in the user's manual. A dealer's manual for professional and
experienced bicycle mechanics is available on our website (https://si.
shimano.com).
For safety, be sure to read this “user's manual”
thoroughly before use, follow it for correct use, and
store it so that it can be referenced at any time.
The following instructions must be observed at all times in order to
prevent personal injury and physical damage to equipment and
surroundings. The instructions are classified according to the degree of
danger or damage which may occur if the product is used incorrectly.
DANGER
WARNING
CAUTION
Important safety information
WARNING
•Do not disassemble or modify the product. This may cause the product
to not operate correctly, and you may suddenly fall and be seriously
injured.
•Never use alkali based or acid based solvents such as rust cleaners. If
those solvents are used the chain might break and cause serious injury.
•Clean the chain with an appropriate chain cleaner regularly. Intervals
between maintenance depend on the use and riding circumstances.
•Check the chain for any damage (deformation or cracking), skipping, or
other abnormalities such as unintended gear shifting. If any problems
are found, consult your place of purchase or a distributor. The chain
may break, and you may fall.
Notice
•Be sure to check that the plate unit cover and cap are installed before
riding the bicycle.
* In the case of a model with a chain stabilizer (However, there are
models without a cap.)
•Be careful not to get water into the E-TUBE ports.
•The components are designed to be fully waterproofed to withstand
wet weather riding conditions; however, do not deliberately place them
into water.
•Do not clean the bicycle with a high-pressure washer. If water gets into
any of the components, operating problems or corrosion may result.
•Handle the components carefully, and avoid subjecting them to strong
shock.
•Do not use thinner or other solvents to clean the products. Such solvents
may damage the surface.
•If gear shifting operations cannot be carried out smoothly, clean the
shifting unit and lubricate all moving parts.
Failure to follow the instructions will result
in death or serious injury.
Failure to follow the instructions could
result in death or serious injury.
Failure to follow the instructions could
cause personal injury or physical damage
to equipment and surroundings.
•If the chain keeps skipping, replace the gears and chain at the place of
purchase.
•If there is a large amount of excess play in the pulleys and extra noise is
generated while riding, replace the pulleys at your place of purchase.
•The gears should be periodically washed with a neutral detergent. In
addition, cleaning the chain with neutral detergent and lubricating it
can be an effective way of extending the life of the gears and the chain.
•Contact the place of purchase for updates of the component software.
The most up-to-date information is available on the SHIMANO website.
•Products are not guaranteed against natural wear and deterioration
from normal use and aging.
•For maximum performance we highly recommend SHIMANO lubricants
and maintenance products.
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may
cause undesired operation.
Regular inspections before riding the bicycle
Before riding the bicycle, check the following items. If any problems are
found, consult your place of purchase or a distributor.
•Is gear shifting carried out smoothly?
•Has excess play increased in the links?
•Has excess play increased in the pulleys?
•Are there any abnormal noises coming from the derailleur?
•Has the chain become elongated?
•Is there any noticeable damage on the chain?
•Is the plug cover installed in the correct position? *For MTB
Names of parts
<For ROAD>
Without chain stabilizer
E-TUBE port E-TUBE port
Pulley
Link Link
With chain stabilizer
Switch lever
Plate unit cover
Pulley
<For MTB>
E-TUBE port
Switch lever
Plate unit cover
Link
Pulley
Plug cover Cap
How to operate
When removing the rear wheel, be sure to first move the switch lever to
the OFF position.
* The shape and position of the switch lever differ depending on the
model.
OFFON
Switch lever
About the RD protection function
* Rotate the front chainwheel while restoring operation after the RD
protection function has activated.
In order to protect the system when the bicycle falls and is subjected to a
strong impact, the RD protection function will activate and momentarily
sever the connection between the motor and the link, impairing the
proper function of the rear derailleur. If this happens, press and hold the
mode button on the system information display or the button on junction
[A] (for 3 seconds or more for SM-BTR2, or 5 to 8 seconds for BM-DN100/
BT-DN110). This will restore the connection between the motor and the
link, and clear the RD protection function for the rear derailleur. When
recovery cannot be performed via button operations, it may be possible
by hand. Check with the place of purchase in advance.
System information display
Button
(Push 3 seconds or more for
SM-BTR2, or 5 to 8 seconds
for BM-DN100/BT-DN110)
LED window for button
Button (push)
Press and hold button illuminate (red) flash (red) RD protection
reset
complete
Illuminates (red)
(The LED flashes red after holding down the button for approximately 3
seconds for the SM-BTR2 or approximately 5 seconds for the BM-DN100/
BT-DN110.)
When the red LED of junction [A] is lit, the rear derailleur will not shift.
Press the button until the red LED turns off.
Please note: specifications are subject to change for improvement without notice. (English)
© Jan. 2021 by SHIMANO INC. ITP
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