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9

ADJUSTMENT

This section describes the adjustment procedure for the SHADOW RD+.
Refer to ”Rear derailleur” in the General Operations for items not explained in this section.

 

„

How to use the end adjust bolt (SHADOW RD+)

Note:

 Move the lever switch to the OFF position to reduce the tension of the plate tension spring before carrying out this 
adjustment.  
If the lever switch remains at the ON position so that the screw is difficult to turn, the screw may become damaged if you try to 
force it to turn.

1. 

Set the rear derailleur to the low gear.

2. 

After stopping the wheel, check that the distance between the tip of the guide pulley and the tip of the gear is within the 
range shown in the illustration.

1

2

Largest sprocket

5 - 6mm

 

• Screwdriver #2

End adjust bolt

3. 

Turn the crank to shift gears to check that other gears do not have a rough feel.

Checking the distance between the sprocket and the guide pulley (RD-M820/M640)

Note:

If the number of teeth for the cassette sprocket is changed, carry out this setting again.

1. 

Set the rear derailleur to the largest (at freeride mode) or the smallest (at downhill mode) gear position.

2. 

Stop the wheel from turning, and then check that the distance from the edge of the guide pulley to the edge of the 
sprocket is within the range as shown in the illustration.

1

2

 

• Screwdriver #2

 

• 3 mm Allen key for 

RD-M820 only

End adjust bolt

Freeride mode

Largest sprocket

Smallest sprocket

5 - 6mm

Downhill mode

1

2

10 - 11mm

Summary of Contents for MTB SHADOW RD Series

Page 1: ...English DM RD0001 05 Dealer s Manual MTB Rear Derailleur MTB SHADOW RD RD M986 RD M820 RD M786 RD M675 RD M640 New RD M615 MTB SHADOW RD RD M981 RD M781 RD M670 New RD M610 RD M4000 RD M3000...

Page 2: ...Adjustment SHADOW RD 11 MAINTENANCE 12 Replacing the bump stopper holder RD M820 12 Replacing the plate and the plate tension spring RD M986 14 Replacing the plate and the plate tension spring except...

Page 3: ...on manuals can be viewed on line on our website http si shimano com Please observe the appropriate rules and regulations of the country state or region in which you conduct your business as a dealer F...

Page 4: ...ch as rust cleaners If those solvent be used chain might break and cause serious injury Check the chain for any damage deformation or crack skipping or other abnormalities such as unintended gear shif...

Page 5: ...Furthermore check that the shifting lever does not touch the bicycle frame when the handlebars are turned all the way If gear shifting adjustment cannot be carried out check the degree of parallelism...

Page 6: ...bolt 2 mm Allen key Plate axle 4 mm Allen key Guide pulley Tension pulley 3 mm Allen key Top Low adjustment screw Screwdriver 2 Move the lever switch to the OFF position before installing the SHADOW...

Page 7: ...e the bracket axle If there is a spacer remove it The E ring is not necessary for installation E ring 5 mm Allen key 1 2 Bracket Spacer Tightening torque 8 0 10 0 N m 70 87 in lbs When replacing the d...

Page 8: ...36T and downhill mode 11 23T 12 25T 11 28T If using the freeride mode sprockets you will also need to use the mode converter Removing the mode converter Mode converter 2 mm Allen key Tightening torque...

Page 9: ...ulley and the tip of the gear is within the range shown in the illustration 1 2 Largest sprocket 5 6mm Screwdriver 2 End adjust bolt 3 Turn the crank to shift gears to check that other gears do not ha...

Page 10: ...rear derailleur should not interfere 4 Turn the crank arm to shift gears and check that there is no roughness in the feel Note RD M640 About freeride specification downhill specification RD M640 diffe...

Page 11: ...g adjustment barrel When no sound at all is heard Loosen the outer casing adjustment barrel until the chain touches the 3rd sprocket and makes noise counterclockwise Outer casing adjustment barrel 4 R...

Page 12: ...r derailleur from the frame before replacement 1 Using a flat head screwdriver remove the E ring 2 Remove the bracket axle with a 5 mm Allen key and remove the bracket If there is a spacer remove it E...

Page 13: ...key push the bottom of the bump stopper to remove it Push a 3 mm Allen key into the screw hole Bump stopper 4 End adjust bolt 3 4 Push 3 mm Allen key Bump stopper 5 Push in the bump stopper with a 1 5...

Page 14: ...dure in reverse Replacing the plate and the plate tension spring RD M986 CAUTION Always ensure that the lever switch is in the OFF position before starting work If operating the lever switch while the...

Page 15: ...iver 2 Tightening torque 1 0 N m 9 in lbs 2 Turn the plate to loosen the plate tension spring as shown in the illustration 3 Remove the plate unit cover bolts 2 mm Allen key Tightening torque 1 0 1 5...

Page 16: ...tension spring into the groove in the plate DO NOT apply grease If the outer surface of the roller clutch with non groove part gets grease on it it will slip and the friction function will not work Ap...

Page 17: ...late unit cover is removed press the friction unit with your finger so that it does not fly out ON Friction unit OFF Removing the plate and the plate tension spring 1 Remove the plate stopper pin Plat...

Page 18: ...en key Tightening torque 1 0 1 5 N m 9 13 in lbs Plate unit cover bolt 4 Remove the cam unit and the chain stabilizer Cam unit Chain stabilizer 5 Use a 4 mm Allen key to remove the plate axle Plate ax...

Page 19: ...n the plate Plate tension spring DO NOT apply grease If the outer surface of the roller clutch with non groove part gets grease on it it will slip and the friction function will not work Apply grease...

Page 20: ...ring Function is not affected 2 Remove the bracket axle using a 5 mm Allen key then remove the B tension spring and adapter set from the bracket member Tightening torque 8 0 10 0 N m 70 87 in lbs Adap...

Page 21: ...e 1 Set the lever switch to OFF 2 Using a 2 mm Allen key remove the plate unit cover Lever switch Plate unit cover 3 Remove the switch stabilizer 4 Move the friction adjustment bolt to adjust the fric...

Page 22: ...ue Figure 2 Figure 1 4 mm Allen key Switch stabilizer Friction torque 3 5 5 4 N m 31 47 in lbs Note If adjusting the friction once more be sure to set the lever switch to the OFF position while pressi...

Page 23: ...ction Friction adjustment bolt Friction increases Friction decreases 4 Check the friction torque While pressing the friction unit with your finger as shown in the illustration set the lever switch to...

Page 24: ...unit OFF Note Do not install the plate unit cover with the switch base floating off the bottom of the plate unit Sufficient sealing performance will not be obtained which will cause rust to appear in...

Page 25: ...er 2 Use a flat tipped screwdriver or similar tool to separate the friction spring and the clutch Be careful not to bend the friction spring with the tip of the flat tipped screwdriver at this time Fr...

Page 26: ...ide pulley without arrows with arrows Tension pulley 3 mm Allen key E ring Note RD M986 M981 M820 When removing the tension pulley remove the E ring first Guide pulley Tension pulley Tightening torque...

Page 27: ...Please note specifications are subject to change for improvement without notice English Jul 2015 by Shimano Inc HTR...

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