Shimano DEORE XT RD-M772 Techniczne instrukcje serwisowe - Strona 2

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Shimano DEORE XT RD-M772 Techniczne instrukcje serwisowe

General Safety Information

WARNING

• If it is difficult to install the wheel, install the quick release lever on the rotor side.

If doing this, make sure that the quick release lever does not interfere with the rotor and that

burns do not occur.

• Use neutral detergent to clean the chain. Do not use alkali-based or acid based detergent such

as rust cleaners as it may result in damage and/or failure of the chain.

• Use the reinforced connecting pin only for connecting the narrow type of chain.

• There are two different types of reinforced connecting pins available. Be sure to check the table

below before selecting which pin to use. If connecting pins other than reinforced connecting pins

are used, or if a reinforced connecting pin or tool which is not suitable for the type of chain is

used, sufficient connection force may not be obtained, which could cause the chain to break or

fall off.

Reinforced

Chain

Chain tool

connecting pin

9-speed super narrow

chain such as

TL-CN32 / TL-CN27

Silver

CN-7701 / CN-HG93

6.5mm

8- / 7- / 6-speed narrow

chain such as

TL-CN32 / TL-CN27

Black

CN-HG50 / CN-HG40

7.1mm

• If it is necessary to adjust the length of the chain due to a change

in the number of sprocket teeth, make the cut at some other place

than the place where the chain has been joined using a

reinforced connecting pin or an end pin. The chain will be

damaged if it is cut at a place where it has been joined with a

reinforced connecting pin or an end pin.

• Check that the tension of the chain is correct and that the chain is not damaged. If the tension is

too weak or the chain is damaged, the chain should be replaced. If this is not done, the chain

may break and cause serious injury.

• 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.

• Obtain and read the service instructions carefully prior to installing the parts. If adjustments

are not carried out correctly, the chain may come off and this may cause you to fall off the bicycle

which could result in serious injury.

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

reference.

Note

• If gear shifting operations do not feel smooth, wash the derailleur and lubricate all moving parts.

• If the amount of looseness in the links is so great that adjustment is not possible, you should

replace the derailleur.

• You should periodically clean the derailleur and lubricate all moving parts (mechanism and

pulleys).

• If gear shifting adjustment cannot be carried out, check the degree of parallelism at the rear end

of the bicycle. Also check if the cable is lubricated and if the outer casing is too long or too short.

• If you hear abnormal noise as a result of looseness in a pulley, you should replace the pulley.

• If the chain keeps coming off the sprockets during use, replace the sprockets and the chain.

• Use a frame with internal cable routing is strongly discouraged as it has tendencies to impair the

SIS shifting function due to its high cable resistance.

• Always be sure to use the sprocket set bearing the same group marks. Never use in combination

with a sprocket bearing a different group mark.

• Use an outer casing which still has some length to spare even when the handlebars are turned

all the way to both sides. Furthermore, check that the shifting lever does not touch the bicycle

frame when the handlebars are turned all the way.

• A special grease is used for the gear shifting cable (SIS-SP41). Do not use

DURA-ACE grease or other types of grease, otherwise they may cause

deterioration in gear shifting performance.

• Grease the inner cable and the inside of the outer casing before use to

ensure that they slide properly.

• For smooth operation, use the specified outer casing and the bottom bracket

cable guide.

• Operation of the levers related to gear shifting should be made only when

the front chainwheel is turning.

• 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 installation, adjustment, maintenance or operation,

please contact a professional bicycle dealer.

This service instruction explains how to use and maintain the Shimano bicycle parts which have been

used on your new bicycle.

For any questions regarding your bicycle or other matters which are not related to Shimano parts,

please contact the place of purchase or the bicycle manufacturer.

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

Please note: specifications are subject to change for improvement without notice. (English) © May 2008 by Shimano Inc. XBC SZK Printed in Japan.

Technical Service Instructions

RD-M972

RD-M772

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

combination be used.

Series

RAPIDFIRE (Shifting lever)

Outer casing

Rear derailleur

Type

Freehub

Gears

Cassette sprocket

Reinforced Connecting Pin

Chain

Bottom bracket guide

Specifications

End Pin

Link Pin

Rear Derailleur

Model number

Type

Gears

Total capacity

Applicable sprocket combination

Smallest sprocket

Front chainwheel tooth difference

Installation of the rear derailleur

5 mm Allen key

Bracket spindle

Tightening torque :

8 - 10 N·m {70 - 86 in. lbs.}

Group marks

Dropout

Bracket

Note: Periodically check that there is no gap between the

dropout and the bracket as shown in the illustration. If there

is a gap between these two parts, problems with gear

shifting performance may occur.

SIS Adjustment

1. Top adjustment

Turn the top adjustment screw to adjust so that

the guide pulley is in line with the outer line of

the smallest sprocket when looking from the rear.

2. Low adjustment

Turn the low adjustment screw so that the guide

pulley moves to a position directly in line with the

largest sprocket.

3. Chain length on bicycles with rear suspension

SI-5W70A-005

The length of A will vary depending on the movement of the rear

suspension. Because of this, an excessive load may be placed

on the drive system if the chain length is too short. Set the

length of the chain by adding two links to the chain when the rear

Rear derailleur

suspension is at a position where dimension "A" is longest and

the chain is on the largest sprocket and the largest chainring. If

the amount of movement of the rear suspension is large, the

slack in the chain may not be taken up properly when the chain is

on the smallest chainring and smallest sprocket.

XTR

SL-M970

SL-M770

SIS-SP41

RD-M972

RD-M772

SGS / GS

FH-M970 / FH-M975

FH-M770 / FH-M775

CS-M970

CS-M770

4. Outer casing length

CN-7701

CN-HG93

(1) Loosen the B-tension adjustment screw until it is in the

position shown in the illustration.

SM-SP17 / SM-BT17

(2) Check that there is enough slack in the outer casing. Next,

align the outer casing with the bottom

edge of the outer casing holder at the

rear derailleur and then cut of any excess

length of outer casing.

RD-M972 / RD-M772

SGS

45T

33T

11 - 32T, 11 - 34T, 12 - 34T

Note:

11T

The distance between the outer stopper to the outer casing

22T

holder of the rear derailleur may change when the rear

suspension moves, so determine the length of the outer casing at

the point where this length is at its greatest.

RD-M972

Cutting the outer casing

After cutting the outer casing, make the end round so that the

inside of the hole has a uniform diameter.

Attach the same outer

end cap to the cut end

of the outer casing.

RD-M772

The sealed cap with

tongue and the rubber

shield should be

installed to the outer

casing stopper of the

frame.

* If the rear derailleur moves to a large degree, such as in

bicycles with rear suspension, it is recommended that you

replace the cap with the

accessory aluminum cap.

Outer line of

The end of the outer casing

smallest sprocket

which has the aluminum cap

should be at the derailleur side.

Connect the cable to the rear

derailleur and, after taking up

Top adjustment

the initial slack in the cable,

screw

Guide pulley

re-secure to the rear

derailleur as shown in the

illustration.

Low adjustment

Largest sprocket

screw

Guide pulley

Chain

Largest

5. How to use the B-tension adjustment screw

sprocket

chainring

Mount the chain on the smallest chainring and the largest

sprocket, and turn the crank arm to shift gears. Then turn the B-

tension adjustment screw

to adjust so that the guide

pulley does not interfere

with the sprocket but not so

Add 2 links (with the chain on both the largest

close that it touches the

sprocket and the largest chainring)

chain. Next, set the chain

to the smallest sprocket

and repeat the above to

make sure that the pulley

does not touch the

sprocket.

<Checking the distance between the largest sprocket

Outer casing

(2)

and the guide pulley>

Set the rear derailleur to the lowest gear

position, stop the wheel from turning, and then

check that the distance from the edge of the

(1)

guide pulley to the edge of the largest sprocket

is within the range of 5 - 6 mm. Turn the crank

arm to shift gears and check that there is no

roughness in the feel. If the number of teeth for the cassette

sprocket is changed, carry out this setting again.

Outer casing holder

6. SIS Adjustment

Operate the shifting lever several times to move the chain to the

2nd sprocket. Then, while pressing the lever just enough to take

up the play in the lever, turn the crank arm.

When shifting to

3rd

Adjustment bolt

Outer end cap

Be careful not to bend

Tighten the outer casing

Rubber shield

adjustment barrel until the

chain returns to the 2nd

sprocket. (clockwise)

Sealed cap with tongue

Rubber shield

Best setting

The best setting is when the shifting lever is

operated just enough to take up the play and the

chain touches the 3rd sprocket and makes noise.

* Return the lever to its original position (the position where

the lever is at the 2nd sprocket setting and it has been

released) and then turn the crank arm clockwise. If the

Derailleur side

chain is touching the 3rd sprocket and making noise, turn the outer

casing adjustment barrel clockwise slightly to tighten it until the noise

stops and the chain runs smoothly.

Aluminum cap

Operate lever to change gears, and check that no noise occurs

in any of the gear positions.

For the best SIS performance, periodically lubricate all

Note: Be sure that the cable is

power-transmission parts.

securely in the groove.

I Replacing the rear derailleur (RD-M972)

Note: When removing the tension pulley in

order to replace the rear derailleur,

remove the E-ring first.

Pull

Guide pulley / Tension pulley

Groove

2.45 - 4.9 N·m {21 - 43 in. lbs.}

Tightening torque :

5 - 7 N·m {44 - 60 in. lbs.}

Note:

Set the inner cable so that it protrudes by a

length of less than about 30 mm, and then

check that the inner cable does not interfere with

the spokes of the wheel. Stop the wheel from

turning while carrying out this step.

Less than 30 mm

Largest sprocket

Smallest sprocket

B-tension

adjustment screw

When no sound

at all is heard

Adjustment bolt

Loosen the outer casing

adjustment barrel until the

chain touches the 3rd sprocket

and makes noise. (counter

clockwise)

Tension pulley

Tightening torque :

E-ring