DM-RD0001-04 (English) 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
CONTENTS IMPORTANT NOTICE............................................................................................... 3 TO ENSURE SAFETY................................................................................................ 4 INSTALLATION........................................................................................................ 6 Direct mount........................................................................................................................
IMPORTANT NOTICE ••This dealer’s manual is intended primarily for use by professional bicycle mechanics. Users who are not professionally trained for bicycle assembly should not attempt to install the components themselves using the dealer’s manuals. If any part of the information on the manual is unclear to you, do not proceed with the installation. Instead, contact your place of purchase or a local bicycle dealer for their assistance. ••Make sure to read all instruction manuals included with the product.
TO ENSURE SAFETY WARNING ••When installing components, be sure to follow the instructions that are given in the instruction manuals. It is recommended that you use only genuine Shimano parts. If parts such as bolts and nuts become loose or damaged, the bicycle may suddenly fall over, which may cause serious injury. In addition, if adjustments are not carried out correctly, problems may occur, and the bicycle may suddenly fall over, which may cause serious injury.
For Installation to the Bicycle, and Maintenance: •• Depending on the shape of the frame, the rear derailleur may interfere with the chain stay. •• Because the high cable resistance of a frame with internal cable routing would impair the SIS function, this type of frame should not be used. •• Grease the inner cable and the inside of the outer casing before use to ensure that they slide properly. •• Do not let dust adhere on the inner cable.
INSTALLATION List of tools to be used The following tools are needed to assemble this product. Where to use Tool Bracket axle 5 mm Allen key Mode converter 2 mm Allen key (RD-M820) B-tension adjustment screw Bump stopper Screwdriver #2 3 mm Allen key (RD-M820) 3 mm Allen key 1.
Replacing with direct mount type 1. If there is an E-ring attached, use a flat-head screwdriver to remove it. 2. Using a 5 mm Allen key, remove the bracket axle. •• If there is a spacer, remove it. •• The E-ring is not necessary for installation. 1 Bracket 2 5 mm Allen key E-ring Spacer Tightening torque: 8.0 - 10.0 N·m {70 - 87 in. lbs.} When replacing the direct mount type with the bracket-equipped type, reverse the procedure.
Mode converter (RD-M820) This derailleur is compatible with two types of sprockets: Freeride mode (11-32T/11-34T/11-36T) and downhill mode (11-23T/1225T/11-28T). If using the freeride mode sprockets, you will also need to use the mode converter. Removing the mode converter Dropout Bracket Mode converter 2 mm Allen key When a mode converter is installed Tightening torque: 1.0 - 1.5 N·m {9 - 13 in. lbs.
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 B-tension adjustment screw (SHADOW RD+) Note: ove the lever switch to the OFF position to reduce the tension of the plate tension spring before carrying out this M adjustment.
3. If the frame interferes with the rear derailleur on models with a bump stopper when the plate unit is lifted up, turn the B-tension adjustment screw until there is no interference. The frame and the rear derailleur should not interfere. Load: approx. 49 - 78.4 N 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 differs between freeride specification and downhill specification.
SIS Adjustment (SHADOW RD+) 1. Set the lever switch to OFF. 2. Operate the shifting lever once to move the chain to the 2nd sprocket. 3. Then, while pressing the lever just enough to take up the play in the lever, turn the crank arm. • 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. • When shifting to 3rd Tighten the outer casing adjustment barrel until the chain returns to the 2nd sprocket.
MAINTENANCE Replacing the bump stopper/holder (RD-M820) Note: Remove the rear 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.
3. Using a 3 mm Allen key, remove the B-tension adjustment screw. 4. Using a 3 mm Allen key, push the bottom of the bump stopper to remove it. Bump stopper 3 B-tension adjustment screw 4 Push a 3 mm Allen key into the screw hole. 3 mm Allen key 4 Push Bump stopper 5. Push in the bump stopper with a 1.5 mm Allen key in the low state as shown in the illustration. 1.
6. Remove the bump stopper holder with a narrow-tipped tool. Bump stopper holder * Reassemble by carrying out the removal procedure in reverse. Replacement of 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 plate unit cover is removed, press the switch stabilizer with your finger so that it does not fly out.
Removing the plate and the plate tension spring 1. Remove the plate stopper pin. Screwdriver #2 Tightening torque: 1.0 N·m {9 in. lbs.} Plate stopper pin 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 N·m {9 - 13 in. lbs.} 4. Remove the switch stabilizer and the chain stabilizer.
5. Use a 4 mm Allen key to remove the plate axle. Tightening torque: 8.0 - 10.0 N·m {70 - 87 in. lbs.} Plate axle Reassembly Carry out the removal procedure in reverse. Note: •• Apply grease to the plate axle. •• When reassembling, insert the end of the plate tension spring into the groove in the plate. Plate axle 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.
Replacement of the plate and the plate tension spring (except RD-M986) CAUTION ••Always ensure that the lever switch is in the OFF position before starting work. ••If operating the lever switch while the plate unit cover is removed, press the friction unit with your finger so that it does not fly out. Friction unit ON OFF Removing the plate and the plate tension spring 1. Remove the plate stopper pin. Screwdriver #2 Tightening torque: 1.0 N·m {9 in. lbs.} Plate stopper pin 2.
3. Remove the plate unit cover bolts. Plate unit cover bolt 2 mm Allen key Tightening torque: 1.0 - 1.5 N·m {9 - 13 in. lbs.} 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 axle Tightening torque: 8.0 - 10.0 N·m {70 - 87 in. lbs.
Reassembly Carry out the removal procedure in reverse. Note: •• Apply grease to the plate axle. •• When reassembling, insert the end of the plate tension spring into the groove in the plate. Plate axle 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. ••Grease number: DURA-ACE grease (Y04110000) Plate tension spring •• Set the cam unit as shown in the illustration.
3. Remove the switch stabilizer. 4. Move the friction adjustment bolt to adjust the friction. * The switch stabilizer can be used as a tool to carry out the adjustment. Switch stabilizer Friction adjustment bolt Friction decreases Friction increases 5. Check the friction torque. •• Securely install the switch stabilizer as shown in Figure 1. •• While pressing the switch stabilizer with your finger as shown in Figure 2, set the lever switch to the ON position and check the friction torque.
Friction adjustment (except RD-M986) The friction amount can be adjusted as desired. Furthermore, you can also adjust after a change of the friction occurs during use. 1. Set the lever switch to OFF. 2. Using a 2 mm Allen key, remove the plate unit cover. Plate unit cover Lever switch Plate unit 3. Using 5.5 mm wrench, move the friction adjustment bolt to adjust the friction. Friction decreases Friction increases Friction adjustment bolt 4. Check the friction torque.
5. While pressing the friction unit with your finger, set the lever switch to the OFF position. At that time, make sure that the friction unit is in contact with the bottom of the plate 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 the inner mechanism, potentially resulting in the adhesion of the plate. OK Not OK 6. Install the plate unit cover.
Applying grease to the chain stabilizer If the friction changes or noise is generated, the grease may have become discolored or may have disappeared. Apply more grease. 1. After carrying out steps 1, 2 and 3 in “Friction adjustment”, remove the chain stabilizer. Chain stabilizer 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.
Replacement of the pulley Guide pulley/Tension pulley Tightening torque: 2.5 - 5.0 N·m {22 - 44 in. lbs.} Guide pulley without arrows Tension pulley with arrows 3 mm Allen key E-ring Note (RD-M986/M981/M820): ••When removing the tension pulley, remove the E-ring first.
Please note: specifications are subject to change for improvement without notice. (English) © Mar. 2014 by Shimano Inc.
