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(English)
User's Manual
UM-1XM0A-002
Hydraulic Disc Brake (for
E-MTB)
https://si.shimano.com
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Contents
IMPORTANT NOTICE........................................................................................ 3
Important safety information........................................................................ 4
Notice............................................................................................................... 6
Regular inspections before riding the bicycle .............................................. 7
Names of parts................................................................................................ 8
How to operate............................................................................................... 9
How to perform bed-in ................................................................................ 10
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IMPORTANT NOTICE
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
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.
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2 mm 0.5 mm
Important safety information
Important safety information
Because each bicycle may handle slightly differently depending on the model, be sure to learn the proper
braking technique (including brake lever pressure and bicycle control characteristics) and operation of
your bicycle. Improper use of your bicycle's brake system may result in a loss of control or a fall, which
could lead to severe injury.
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.
Riders must become accustomed to the higher performance of this brake before riding the bicycle.
The brake system is designed for bicycles for E-MTB, and its braking force is much higher than for other
brakes. If you ride the bicycle without becoming sufficiently familiar with the braking characteristics,
braking may cause you to fall off the bicycle, potentially causing serious injury or a fatal accident.
Furthermore, the settings of the brakes make them unsuitable for riding on city streets. Sudden brake
operations may cause the bicycle to fall forward, which can result in serious injury or even death.
The 203 mm and 180 mm disc brake rotors provide a higher braking force than the 160 mm disc brake
rotors. If you ride the bicycle without becoming sufficiently familiar with the braking characteristics,
braking may cause you to fall off the bicycle, potentially causing serious injury or a fatal accident.
Please use extra caution to keep your fingers away from the rotating disc brake rotor. The disc brake rotor
is sharp enough to inflict severe injury to your fingers if caught within the openings of moving rotor.
Do not touch the calipers or disc brake rotor while riding or immediately after dismounting from the
bicycle. The calipers and disc brake rotor will become hot when the brakes are operated, so you may get
burned if you touch them.
Be careful not to allow any oil or grease to get onto the disc brake rotor and brake pads. Riding the
bicycle with oil or grease on the disc brake rotor and brake pads may prevent the brakes from operating
and result in serious injury due to a fall or collision.
Check the thickness of the brake pads and do not use them if they have a thickness of 0.5 mm or less.
Doing so may prevent the brakes from operating and result in serious injury.
Do not use the disc brake rotor if it is cracked or deformed. The disc brake rotor may break, and result in
serious injury due to a fall. Replace the disc brake rotor with a new one.
Do not use the disc brake rotor if its thickness is 1.5 mm or less. Also do not use it if the aluminum surface
becomes visible. The disc brake rotor may break, and result in serious injury due to a fall. Replace the disc
brake rotor with a new one.
Do not continuously apply the brakes. Doing so may cause a sudden increase in the brake lever stroke,
preventing the brakes from operating and resulting in serious injury.
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Important safety information
Do not use the brakes with fluid leaking. Doing so may prevent the brakes from operating and result in
serious injury.
Do not apply the front brake too strongly. If you do so, the front wheel may lock and the bicycle may fall
forward, and serious injury may result.
Because the required braking distance will be longer during wet weather, reduce your speed and apply the
brakes early and gently. You may fall or collide and be seriously injured.
A wet road surface may cause tires to lose traction; therefore, to avoid this, reduce your speed and apply
the brakes early and gently. If the tires lose traction, you may fall and be seriously injured.
Cautions on SHIMANO genuine mineral oil
Use appropriate eye protection when handling, and avoid contact with eyes. In the event of eye contact,
flush with fresh water and seek medical assistance immediately. Contact with eyes may result in irritation.
Use gloves when handling. In the event of skin contact, wash well with soap and water. Contact with skin
may cause a rash and discomfort.
Cover nose and mouth with a respirator type mask and use in a well ventilated area. Inhalation of mineral
oil mist or vapors may cause nausea.
If mineral oil mist or vapor is inhaled, go to an area with fresh air. Cover up with a blanket. Stay warm and
stable and seek professional medical advice immediately.
Bed-in period
Disc brakes have a bed-in period, and the braking force will gradually increase as the bed-in period
progresses. Accidents or falls may occur due to losing control of the bicycle, possibly resulting in serious
injury. (The same thing will happen when the brake pads or disc brake rotor are replaced.)
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Notice
Notice
To prevent noise and ensure the best performance, perform the bed-in procedure after replacing the brake
pads or disc brake rotor.
When the bicycle wheel has been removed, it is recommended that pad spacers are installed. Do not depress
the brake lever while the wheel is removed. If the brake lever is depressed without the pad spacers installed,
the pistons will protrude further than normal. If that happens, consult a place of purchase.
Use soapy water and a dry cloth when cleaning and carrying out maintenance of the brake system. Do not use
commercially available brake cleaners or silencing agents. Such substances can cause damage to parts such as
seals.
This product is not warranted against damage resulting from improper use, such as jumping while riding or if
the bicycle falls over, except if such malfunctions are caused by manufacturing methods.
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.
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Regular inspections before riding the bicycle
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.
Are there any signs of brake oil leakage?
Do the front and rear brakes work correctly?
Do the pads have a thickness of 0.5 mm or more?
Is the disc brake rotor cracked or deformed?
Are there any abnormal noises?
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Brake lever
Caliper
Brake pad
Disc brake rotor
Names of parts
Names of parts
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How to operate
How to operate
This product has a reach adjustment function.
If the brake levers seem too far away and are difficult to reach, contact the place of purchase or a distributor.
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How to perform bed-in
How to perform bed-in
To optimize the performance of the brake pads and disc brake rotor, perform the bed-in procedure as explained
in the steps below:
Ride your bicycle in a flat and safe area without obstacles and accelerate to a moderate speed.1.
Operate the brake lever until you slow down to walking speed.
2.
Do this only with one brake lever at a time. Be careful when performing this procedure. Always operate your
brake lever with moderation, especially when you bed in the front brake.
Repeat steps 1 and 2 for at least 20 times for both the front and rear brakes.
3.
While repeating the process, the brake force will increase.
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One Holl and, Irvine, California 92 618, U.S.A. Ph one: +1-949-9 51-5003
High Tec h Campus 92, 5656 AG Eindho ven, The Neth erlands Phone : +31-402-6122 22
3-77 Oim atsu-cho, Sak ai-ku, Sakai City, Osaka 59 0-8577, Japan
Please note: specifications are subject to change for improvement without notice. (English)
© Sep. 2024 by SHIMANO INC. ITP
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