Shimano SI-8A20A Service Instructions

When installing the components to carbon frame/handle bar surfaces, verify with the manufacturer of the carbon frame/parts for their recommendation on tightening torque in order to prevent over tightening that can cause damage to the carbon material and/or under tightening that can cause lack of fixing strength for the components.

Use a 5 mm Allen key to install the brake lever.

General Safety Information

WARNING

• Improper use of your bicycle's brake system may result in a loss of control or an accident, which could lead to a severe injury. Because each bicycle may handle differently, be sure to learn the proper braking technique (including brake lever pressure and bicycle control characteristics) for your bicycle. Consult your bicycle dealer and the bicycle's owners manual, and practice your riding and braking technique.

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

• Brakes designed for use as rear brakes should not be used as front brakes.

• Obtain and read the service instructions carefully prior to installing the parts. Loose, worn or damaged parts may cause the bicycle to fall over and serious injury may occur as a result. We strongly recommend only using genuine Shimano replacement parts.

• Be careful not to allow any oil or grease to get onto the brake shoes. If any oil or grease do get on the shoes, you should replace the shoes, otherwise the brakes may not work correctly.

• Check the brake cable for rust and fraying, and replace the cable immediately if any such problems are found. If this is not done, the brakes may not work correctly.

• Always make sure that the front and rear brakes are working correctly before you ride 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.To avoid this, reduce your speed and apply the brakes early and gently.

• Read these Technical Service Instructions carefully, and keep them in a safe place for later reference.

Note

• The optimum efficiency of the Multi-Condition Brake System can be realized by using the brakes and brake levers in the recommended set.

• If the brake shoes have worn down until the grooves are no longer visible, they should be replaced.

• Different brake shoes have their own characteristics. Ask the place of purchase for details when purchasing the brake shoes.

• 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 handling or maintenance, please contact the place of purchase.

– To avoid serious injuries:

Brake lever

BL-R600 / BL-R440 / ST-R600 / BL-R550 / BL-R770

ST-5600 / ST-5601 / ST-5603

ST-4500 / ST-4501 / ST-4503 / ST-3400 / ST-R500

Multi-Condition

Brake System

In order to realize the best performance, we recommend that the following combination be used.

Multi-Condition Brake System

By providing superior wet weather braking performance (control and modulation), braking performance will not vary in a multitude of conditions when using this brake system.

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-ku, Sakai-shi, Osaka 590-8577, Japan

* Service Instructions in further languages are available at :

http://techdocs.shimano.com

Please note: specifications are subject to change for improvement without notice.(English) © Sep. 2010 by Shimano Inc. XBC IZM Pr inted in Malaysia.

Technical Service Instructions SI-8A20A-003

Cantilever brake

Brake cable

BR-R550

(Clamp diameter: 23.8 mm/22.2 mm *1)

*1, *2 : BL-R440

Tightening torque:

6 – 8 N·m {52 – 69 in. lbs.}

Tightening torque:

6 – 8 N·m {52 – 69 in. lbs.}

Tightening torque:

5 – 7 N·m {43 – 61 in. lbs.}

Tightening torque:

6 – 8 N·m {52 – 69 in. lbs.}

Tightening torque:

6 – 8 N·m {52 – 69 in. lbs.}

Cable fixing bolt temporary

tightening torque:

0.5 – 1 N·m {5 – 8 in. lbs.}

Installation of the brake lever

1. Insert the stopper pin of the brake body into the center spring

hole in the frame mounting boss, and then secure the brake body to the frame with the link fixing bolt.

2. Set the inner cable onto the cable carrier.

3. Temporarily tighten the inner cable so that the cable carrier is

at the position in the illustration.

4. Turn the spring tension adjustment screw so that the cable

carrier comes to a position directly below the outer casing holder.

8. Adjust the flexible pipe so that it touches the cantilever brake

body.

10. If balance adjustment is necessary, adjust with the spring

tension adjustment screw.

11. Depress the brake lever about 10 times as far as the grip

and check that everything is operating correctly and that the shoe clearance is correct before using the brakes.

9. If the cable carrier is in the position in the illustration, then

setting is complete. Check to be sure that there is a clearance of 20 mm or more between the outer casing holder and the cable carrier as shown in the illustration for step 8. This is to ensure that the cable carrier does not touch the outer casing holder. If it does touch, the brakes will not work.

Installation of the cantilever brake

5. While holding the shoe against the rim, adjust the amount of

shoe protrusion by changing over the washer B (thick or thin).

6. While holding the shoe against the rim, tighten the shoe fixing

nut.

7. Loosen the cable fixing bolt, move the brake body so that the

clearance is 2 – 3 mm, and then secure the inner cable.

5 mm Allen key

Spring tension adjustment screw

Shoe fixing link

Washer AWasher A

WasherAdjustment

washer

Shoe fixing nut

Flexible pipe

20 mm or more

Depress about 10 times

Outer casing holder

Cable carrier

Washer B (thick)Washer B (thin)

5 mm Allen key

Stopper pin

Spring hole

Link fixing bolt

Touching

Flexible pipe

Touching

Spring tension adjustment screw

FORWARD

Shoe fixing pin Shoe fixing pin

Replacement of the cartridge shoe

1. Remove the shoe fixing pin, and then slide the shoe along the

groove to remove it from the shoe holder.

3. Insertion of shoe fixing pin is very critical to keep shoe

properly fixed in place.

2. There are two different types of shoe and shoe holder to be

used in the left and right positions respectively. Slide the new shoes into the grooves on the shoe holders while taking note of the correct directions and pin hole positions.

Shoe fixing pin

Shoe

Shoe insertion direction

Shoe holder Shoe holder

For the left

Same at front and rear

For the right

Same at front and rear

Shoe

Front

Shoe

Front

Use a handlebar grip with a maximum outer diameter of 32 mm.

SI-8A20A-003-00