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General Safety Information

SI-4GW0A-001-00

* Service Instructions in further languages are available at : http://techdocs.shimano.com

Please note: Specifications are subject to change for improvement without notice. (English)

Technical Service Instructions

SI-4GW0A-001

WH-RS80-C50-CL

Wheel

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

be used.

Applicable tire size

Clincher tire

700C (19C – 28C)

Largest sprocket 21 – 28T

This wheel can be used with 8-gear, 9-gear and 10-gear sprocket sets. (If using a 10-gear

sprocket set other than for a junior bicycle, use the accessory 1-mm spacer.)

Refer to the Product Technical Information for details on combination with other parts

such as chains and cassette sprockets.

WARNING

Before use, check the wheels to make sure that there are no bent or loose spokes,

●

dents, scratches or cracks on the rim surface. Do not use the wheel if any of these

problems are found.

Do not use in combination with bottom link-type suspension forks. With these types of

●

forks, the clearance between the hub axle and the brake shoes can change due to the

operation of the suspension, so that when the brakes are applied, the brake shoes may

touch the spokes.

If the quick release mechanism is not used correctly, the wheel may come off the bicycle

●

and serious injury could result. Read the Service Instructions for the quick release

mechanism thoroughly before use.

These wheels are designed for riding on paved surfaces. If the wheels are used on

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unpaved surfaces, the wheels may become bent or damaged, and accidents may result.

Check that the wheels are fastened securely before riding the bicycle. If the wheels are

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loose in any way, they may come off the bicycle and serious injury may result.

The hollow on the opposite side to the valve hole is an indicator for the amount of rim

●

wear.If this hollow can no longer be seen, stop using the rim.

If you continue using the rim, it may break, and the bicycle may fall over and an accident

may result.

Obtain and read the service instructions carefully prior to installing the parts. Loose,

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worn, or damaged parts may cause injury to the rider.

We strongly recommend only using genuine Shimano replacement parts.

Read these Technical Service Instructions carefully, and keep them in a safe place for

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later reference.

CAUTION

The tires should be inflated to the pressure indicated on the tires before use.

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Use rim tape which can withstand high pressures, otherwise the tires may suddenly

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puncture and come off, and severe injury may result.

NOTICE

The Shimano R55HC (high performance) brake shoes use an aggressive compound

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designed with an emphasis on maximum performance in wet conditions, however they

will cause accelerated rim wear.

Shimano accepts no responsibility for reduced rim life which might occur from using

R55HC brake shoes.

Use of genuine Shimano spokes and nipples is strongly recommended. If genuine

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Shimano parts are not used, the hubs or rims may become damaged.

Before use, check that there are no pieces of metal or other foreign objects sticking to

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the brake pads. If any such items are present, they may cause damage to the rim when

the brakes are applied.

The nipples have large diameters and are easy to rotate in order to make it easier to

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increase the spoke tension. However, be careful not to overtighten the nipples when

adjusting the spoke tensions. If the nipples are overtightened, damage to the rim may

result.

(We recommended that you ask authorized bicycle dealers to make the adjustments.)

Note:

If the wheel becomes stiff and difficult to turn, you should lubricate it with grease.

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Do not apply any oil to the inside of the hub, otherwise the grease will come out.

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The hollow on the other side of the valve from the hole is a guide for indicating the wear

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of the rim. If this hollow is no longer visible, the rim is at the end of its useful life.

Special spoke wrenches are available as optional accessories.

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We recommend that you ask authorized bicycle dealers to adjust the spoke tensions if

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there is any initial play in the spokes and after the first 1,000 km of riding.

Spoke protectors (CP-WH23) are also sold separately. Please ask your bicycle dealer

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for details.

For maximum performance we highly recommend Shimano lubricants and maintenance

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products.

Reflectors (manufactured by CATEYE) are also sold separately. Please ask your bicycle

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dealer for details.

Model number Specification Color

RR-550-WUWSW CPSC White

RR-550-WUASW AS Amber

RR-317-WUASW DIN Amber

Parts are not guaranteed against natural wear or deterioration resulting from normal use.

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Specifications

Model number WH-RS80-C50-CL

Rim size 700C (622 × 15C)

Rim width 20.8 mm

Spoke lacing

Lace the spokes as shown in the illustration.

(For front)

At the front, a radial assembly is

used at both the left and right.

(For rear)

At the rear, a tangent assembly is

used at both the left and right.

Spoke tension value

For front For rear

1000 – 1400 N

(224 – 314 lbf)

Right (sprocket) side Left side

1250 – 1500 N

(280 – 336 lbf)

600 – 850 N

(134 – 190 lbf)

* These values should be used as a guide only.

Replacing the spoke

Hook the spokes through the hub as shown in the illustration to install them.

Spoke

* Inner ring

* Hub cap

At the front, fit the heads of the

spokes securely into the slots in the

hub unit, otherwise damage may

occur.

* Install the inner ring and the hub

cap properly so that the inner ring

is fit completely inside the tabs of

the hub unit and the tabs of the

hub cap are fit completely into the

inner ring.

Nipple

Installation of the HG sprockets

For each sprocket, the surface that has

the group mark should face outward and

be positioned so that the wide parts of

the gear projections on each sprocket

and the A part (where the groove width is

wide) of the freewheel body are aligned.

Wide part

The groove is wide

at one place only.

●

For installation of the HG sprockets, use the special tool

(TL-LR15) to tighten the lock ring.

To replace the HG sprockets,

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use the special tool (TL-LR15)

and TL-SR21 to remove the

lock ring.

Tightening torque:

30 – 50 N·m

{261 – 434 in. lbs.}

Lock ring

Tool

(TL-SR21)

TL-LR15

Disassembly

Sprocket spacers Lock ring

Replacement of the freewheel body

After removing the hub axle, remove the freewheel body

fixing bolt (inside the freewheel body), and then replace the

freewheel body.

Note:

Do not attempt to disassemble the freewheel body,

because it may result in a malfunction.

Tightening torque:

35 – 50 N·m {305 – 434 in. lbs.}

Freewheel body

Freewheel body washer

10 mm Allen key

(TL-WR37)

Freewheel body fixing bolt

Disassembly

Assembly

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

SHIMANO AMERICAN CORPORATION SHIMANO EUROPE B.V. SHIMANO INC.

WH-RS80-C50-CL 1

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General Safety InformationSI-4GW0A-001-00* Service Instructions in further languages are available at : http://techdocs.shimano.comPlease note: Specif

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