Shimano Di2 - User 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
Failure to follow the instructions will result in
death or serious injury.
WARNING
Failure to follow the instructions could result in
death or serious injury.
CAUTION
Failure to follow the instructions could cause
personal injury or physical damage to equipment
and surroundings.
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.
* For MTB
•
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 rusting may result.
•
Handle the components carefully, and avoid subjecting them to strong shock.
•
Do not use the thinners or harsh solvents to clean the products. Such solvents may
damage the surface. When cleaning the products, use a cloth moistened with a
neutral detergent diluted with water.
•
If gear shifting operations do not feel smooth, wash the shifting unit and
lubricate all moving parts.
•
If the chain keeps skipping, replace the gears and chain at the place of purchase.
•
If you hear abnormal noise as a result of excess play in a pulley while riding, you
should replace the pulley at the 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
Pulley
Link
E-TUBE port

For MTB
E-TUBE port
Plug cover
Link
Pulley
Lever switch
Plate unit cover
Cap
How to operate
When removing the rear wheel, be sure to first move the lever switch to the OFF
position.
* The shape and position of the lever switch differ depending on the model.
Lever switch
ON OFF
UM-5XW0C-000
User's Manual

Summary

Important Notices and Safety

General Usage and Safety Advice

Covers crucial notices, warnings, and safety precautions for product use.

Safety Classifications

Defines DANGER, WARNING, CAUTION levels for potential hazards.

Product Care and Maintenance

Cleaning and Water Precautions

Advises on proper cleaning methods and avoiding water ingress into components.

Pre-Ride Checks and Operation

Pre-Ride Inspection Checklist

Lists essential checks for safe riding.

Rear Wheel Removal Operation

Details operating the lever switch for rear wheel removal.

Component Identification

Road Component Names

Identifies key parts of the rear derailleur for road bicycles.

MTB Component Names

Identifies key parts of the rear derailleur for mountain bicycles.

RD Protection Function

RD Protection Function Activation

Explains how the RD protection function activates during a fall or impact.

RD Protection Function Reset

Describes the steps to reset the RD protection function using buttons or manually.

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

This document serves as a user's manual for a Shimano Di2 Rear Derailleur, providing essential information for its safe and effective use, maintenance, and operation. It emphasizes the importance of reading the manual thoroughly before use and storing it for future reference.

Function Description

The Shimano Di2 Rear Derailleur is a component designed for electronic gear shifting on bicycles. It facilitates smooth and precise changes between gears, enhancing the riding experience. The system is designed to be fully waterproofed, allowing it to withstand wet weather riding conditions.

A key feature of the derailleur is its RD protection function. This function activates if the bicycle falls or is subjected to a strong impact, momentarily severing the connection between the motor and the link to protect the system. When activated, the rear derailleur's proper function is impaired. To restore operation, the user must press and hold the mode button on the system information display or the button on junction [A] for 5 seconds or more. This action re-establishes the connection and clears the protection function. If button operations fail, manual recovery might be possible, and users are advised to consult their place of purchase.

The device complies with part 15 of the FCC Rules, meaning it is designed not to cause harmful interference and to accept any interference received, including that which may cause undesired operation.

Usage Features

The manual outlines several important usage features and warnings:

• Installation and Adjustment: For detailed information on installation, adjustment, and replacement of parts not covered in this manual, users should contact their place of purchase or a distributor. A dealer's manual for professional mechanics is available online.
• Safety Precautions: The manual categorizes instructions by the degree of danger:
  • DANGER: Failure to follow these instructions will result in death or serious injury.
  • WARNING: Failure to follow these instructions could result in death or serious injury.
  • CAUTION: Failure to follow these instructions could cause personal injury or physical damage to equipment and surroundings.
• Component Handling: Users are advised to handle components carefully and avoid subjecting them to strong shock.
• Cleaning: Do not use thinners or harsh solvents to clean the products, as they may damage the surface. Instead, use a cloth moistened with a neutral detergent diluted with water.
• Gear Shifting Issues: If gear shifting operations do not feel smooth, the shifting unit should be washed and all moving parts lubricated.
• Chain and Gear Replacement: If the chain keeps skipping, the gears and chain should be replaced.
• Pulley Noise: If abnormal noise occurs due to excess play in a pulley while riding, the pulley should be replaced.
• Software Updates: Users should contact their place of purchase for updates to the component software, with the most up-to-date information available on the SHIMANO website.
• Water Exposure: While components are waterproof, users should not deliberately place them into water or clean the bicycle with a high-pressure washer, as water ingress can lead to operating problems or rusting.
• Rear Wheel Removal: When removing the rear wheel, the lever switch must first be moved to the OFF position. The shape and position of the lever switch may vary by model.
• Pre-Ride Checks: Before each ride, users should perform regular inspections, checking for:
  • Smooth gear shifting.
  • Increased play in the links or pulleys.
  • Abnormal noises from the derailleur.
  • Chain elongation or damage.
  • Correct installation of the plug cover (for MTB models). Any issues found should prompt consultation with the place of purchase or a distributor.

Maintenance Features

Proper maintenance is crucial for the longevity and performance of the Di2 Rear Derailleur:

• Cleaning Gears and Chain: Gears should be periodically washed with a neutral detergent. Cleaning the chain with neutral detergent and lubricating it is an effective way to extend the life of the gears and chain.
• Chain Maintenance: The chain should be cleaned regularly with an appropriate chain cleaner. The frequency of maintenance depends on usage and riding circumstances.
• Chain Inspection: Regularly check the chain for any damage (deformation, cracking), skipping, or other abnormalities such as unintended gear shifting. Problems with the chain can lead to breakage and falls.
• Lubrication: For maximum performance, SHIMANO lubricants and maintenance products are highly recommended.
• Water Protection: Users should be careful not to get water into the E-TUBE ports.
• Component Integrity: Do not disassemble or modify the product, as this may cause incorrect operation and potential injury.
• Avoid Harsh Solvents: Never use alkali-based or acid-based solvents, such as rust cleaners, as they can cause the chain to break, leading to serious injury.
• Cover Installation: For MTB models, ensure the plate unit cover and cap are installed before riding the bicycle.
• Battery Care: 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 rusting may result.

Shimano Di2 Specifications