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自転車アクセサリー Shimano BR-M8000のPDF ディーラーズマニュアルをオンラインで閲覧またはダウンロードできます。Shimano BR-M8000 39 ページ。 Hydraulic disc brake

TO ENSURE SAFETY

• The disc brake is not designed to work when the bicycle is upside down. If the bicycle is turned upside down or on its side, the brake may not work

correctly, and a serious accident could occur. Before riding the bicycle, be sure to operate the brake lever a few times to check that the brakes operate

normally. If the brakes do not operate normally, stop using the brakes and consult a dealer or an agency.

• If you feel no resistance when depressing the brake lever, immediately stop using the brakes and consult a dealer or an agency.

• If fluid leaks occur, immediately stop using the brakes and consult a dealer or an agency.

• If the front brake is applied too strongly, the wheel may lock and the bicycle may fall forward, and serious injury may result.

• Always make sure that the front and rear brakes are working correctly before riding the bicycle.

• The required braking distance will be longer during wet weather. Reduce your speed and apply the brakes early and gently.

• If the road surface is wet, the tires will skid more easily. If the tires skid, you may fall off the bicycle. Reduce your speed and apply the brakes early and

gently.

• The lever should never be altered. Otherwise, the lever may break preventing braking operation.

• Check before riding that there is no damage such as cracking. If there is any damage, stop using the bicycle and consult a dealer or an agency.

Otherwise, the lever may break preventing braking operation.

For Installation to the Bicycle, and Maintenance:

• Please make sure to keep your fingers away from the rotating disc brake rotor during installation or maintenance of

the wheel. The disc brake rotor is sharp enough to inflict severe injury to your fingers if caught in the openings of the

disc brake rotor while it is moving.

• If the disc brake rotor is worn, cracked or warped, it should be replaced.

• If the disc brake rotor becomes worn down to a thickness of 1.5mm or the aluminum surface becomes visible, be sure to replace the disc brake rotor

with a new one.

• Check that the brake components have cooled down sufficiently before attempting to adjust the brakes.

• Use only Shimano genuine mineral oil. If other types of oil are used, it may cause problems with brake operation, and cause the system to be unusable.

• Be sure to use only oil from a freshly-opened container, and do not re-use oil which has been drained from the bleed nipple.

Old or reused oil may contain water, which could cause vapor lock in the brake system.

• Be careful not to let water or air bubbles to get into the brake system. Otherwise, vapor lock may occur. Be particularly careful when removing the

cover of the reservoir tank.

• If cutting the brake hose in order to adjust the length of the hose, or when changing over the brake hose from left to right or vice versa, be sure to

bleed the air from the hose according to steps given in "Adding Shimano genuine mineral oil and bleeding air".

• When turning the bicycle upside down or on its side, the brake system may have some air bubbles inside the reservoir tank which are still there when

the bleed screw is closed, or which accumulate in various parts of the brake system when it is used for long periods. This disc brake system is not

designed to work with the bicycle upside down. If the bicycle is turned upside down or on its side, the air bubbles inside the reservoir tank may move

in the direction of the calipers. If the bicycle is ridden in this condition, there is danger that the brakes may not operate and a serious accident may

occur. If the bicycle has been turned upside down or on its side, be sure to operate the brake lever a few times to check that the brakes operate

normally before riding the bicycle. If the brakes do not operate normally, adjust them according to the following procedure.

If brake does not seem to work (feels sluggish) when the lever is depressed

Set the brake lever so that it is parallel to the ground, and then gently depress the brake lever several times and wait for the bubbles to return to

the reservoir tank. It is recommended that you then remove the reservoir tank cover and fill the reservoir tank with mineral oil until no bubbles

remain.

If the brakes are still sluggish, bleed the air from the brake system. (Refer to "Adding the Shimano genuine mineral oil and bleeding air".)