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Related Manuals for Shimano GRX RD-RX810
Summary of Contents for Shimano GRX RD-RX810
- Page 1 DM-GARD001-02 (English) Dealer's Manual ROAD Trekking City Touring/ URBAN SPORT E-BIKE Comfort Bike Rear Derailleur RD-RX810 RD-RX812 RD-RX400...
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Page 2: Table Of Contents
Contents Contents ...................2 IMPORTANT NOTICE ..............3 TO ENSURE SAFETY ..............4 List of tools to be used ............6 Installation/removal ..............7 Installing the rear derailleur ..............7 • Standard type ........................... 7 • Direct mount type ........................9 Adjustment ................11 Adjusting the stroke on the high limit ..........11 Installing the chain ................11 Checking the chain length ..............11 Connection and securing of the inner cable ........14... -
Page 3: Important Notice
• All manuals and technical documents are accessible online at https://si.shimano.com. • For consumers who do not have easy access to the internet, please contact a SHIMANO distributor or any of the SHIMANO offices to obtain a hardcopy of the User's Manual. -
Page 4: To Ensure Safety
• Be sure to follow the instructions provided in the manuals when installing the product. Only use SHIMANO genuine parts. If a component or replacement part is incorrectly assembled or adjusted, it can lead to component failure and cause the rider to lose control and crash. - Page 5 TO ENSURE SAFETY • For maximum performance we highly recommend SHIMANO lubricants and maintenance products. For installation to the bicycle, and maintenance: • Depending on the shape of the frame, the rear derailleur may interfere with the chainstay. Use the B-screw to adjust so that the rear derailleur does not interfere with the chainstay.
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Page 6: List Of Tools To Be Used
List of tools to be used List of tools to be used The following tools are needed for installation/removal, adjustment, and maintenance purposes. Tool 2 mm hexagon wrench 3 mm hexagon wrench 4 mm hexagon wrench 5 mm hexagon wrench 5.5 mm spanner Cross head screwdriver [#2] TL-CT12... -
Page 7: Installation/Removal
Installation/removal Installing the rear derailleur Installation/removal Installing the rear derailleur TECH TIPS • The rear derailleur will not gear shift properly if the derailleur hanger is not straight. Use TL-RD11 to check whether the derailleur hanger is straight or not. Standard type Set the switch lever in the OFF position. - Page 8 Installation/removal Installing the rear derailleur Tighten the rear derailleur fixing screw. Be careful not to insert the rear derailleur fixing screw in the derailleur hanger at an angle. In addition, be sure to install the rear derailleur so that the stopper plate contacts the B-tension stop, with no gap in between.
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Page 9: Direct Mount Type
Installation/removal Installing the rear derailleur Direct mount type Set the switch lever in the OFF position. Switch lever Remove the bracket axle plate. RD-RX810/RD-RX812 RD-RX400 Install the rear derailleur. (1) Insert the derailleur hanger into the installation part for direct mount of the rear derailleur. - Page 10 Installation/removal Installing the rear derailleur (2) Install the rear derailleur with the B-axle2. Derailleur hanger 8 - 10 N·m B-axle2...
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Page 11: Adjustment
Adjustment Adjusting the stroke on the high limit Adjustment Adjusting the stroke on the high limit Adjust by turning the high limit screw. Adjust so that the center of the guide pulley is aligned with the outer face of the smallest sprocket when viewed from the rear side. - Page 12 Adjustment Checking the chain length Check the length of the chain. Add 4 - 6 links to set the length of the chain as shown in the figure. If the inner links and outer links match when mounting the chain Add 4 or 6 links to set the length.
- Page 13 Adjustment Checking the chain length NOTICE • The rear derailleur plate assembly is equipped with a pin or plate that prevents chain derailment. When passing the chain through the rear derailleur, pass it through the main body of the rear derailleur from the side of the chain derailment prevention plate as shown in the figure.
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Page 14: Connection And Securing Of The Inner Cable
Adjustment Connection and securing of the inner cable Connection and securing of the inner cable Outer casing length Loosen the B-screw to the position shown in the figure. Make sure that the stopper plate touches the bracket body without leaving a gap. Stopper plate Bracket body B-screw... - Page 15 Adjustment Connection and securing of the inner cable Cut off any excess outer casing with the cable cutter. Cut the end of the outer casing that is opposite to the marking. Outer cap with tongue Remove the outer cap with tongue from the cut outer casing. Spread out the tip of the liner using a thin tool such as a TL-CT12 needle.
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Page 16: Connection And Securing Of The Inner Cable
Adjustment Connection and securing of the inner cable Install the cap with long tongue to the end. The end of the outer casing which has the sealed outer cap (aluminum type) should be on the shifting unit side. Route the inner cable through the outer casing. Sealed outer cap (aluminum type) OT-RS900... - Page 17 Adjustment Connection and securing of the inner cable Remove the initial slack from the inner cable. Hold the rear derailleur so that it won't move under load from the shift cable. Operate the shifting lever several times in order to tension the shift cable assembly and fully seat all the shift cable components.
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Page 18: Adjusting The Stroke On The Low Limit
Adjustment Adjusting the stroke on the low limit NOTICE • Check that the inner cable does not interfere with the spokes of the wheel. • Do not allow the wheel to turn while carrying out this step. Adjusting the stroke on the low limit Adjust by turning the low limit screw. -
Page 19: Adjusting The B-Screw
Adjustment Adjusting the B-screw Adjusting the B-screw Shift the chain to the smallest chainring and the largest sprocket. Turn the crank arm in reverse. Smallest chainring Largest sprocket Adjust the B-screw. Bring the guide pulley as close to the largest sprocket as possible without any turbulence between the pulley and sprocket. -
Page 20: Sis Adjustment
Adjustment SIS adjustment Check that the chain has running clearance when it is in the smallest rear sprocket. If the chainstay and rear derailleur interfere, adjust by turning the B-screw until they do not interfere. If there is some slack in the chain, adjust the B-screw to remove the slack from the chain. SIS adjustment Set the switch lever in the OFF position. - Page 21 Adjustment SIS adjustment Turn the cable adjustment barrel clockwise to reduce cable tension until no noise is heard from the chain rubbing the sprocket. Cable adjustment barrel Return the shifting lever to its original position (the position of the 2nd sprocket counting from the smallest sprocket, with your finger released from the shifting lever), then turn the crank.
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Page 22: Maintenance
Maintenance Replacing the pulleys Maintenance Replacing the pulleys Replace the guide pulley and tension pulley. Check the arrow direction on the pulley when installing it. For RD-RX400, the pulley can be installed in any direction. RD-RX810/RD-RX812 RD-RX400 Guide pulley Guide pulley 2.5 - 5 N·m 2.5 - 5 N·m RD-RX810/RD-RX812... -
Page 23: Applying Grease To The Chain Stabilizer
Maintenance Applying grease to the chain stabilizer Applying grease to the chain stabilizer If there is a noticeable change in friction in the chain stabilizer assembly, or if it starts to make noise, you may need to add grease to the chain stabilizer. * When assembling, reverse the procedure. -
Page 24: Adjusting Friction
Maintenance Adjusting friction Apply the dedicated grease to the outer diameter of the roller clutch. SHADOW RD+ Grease number: Y04121000 (50 g) NEXUS Grease number: Y04120800 (100 g) Roller clutch NOTICE • Be careful not to get grease inside the roller clutch. Otherwise, the clutch could stick, slip, or otherwise malfunction. - Page 25 Maintenance Adjusting friction Use a 2 mm hexagon wrench to remove the plate unit cover. Plate unit cover Turn the friction adjustment screw to adjust the friction. RD-RX810 Decrease Increase Friction adjustment screw RD-RX812/RD-RX400 Decrease Increase Friction adjustment screw...
- Page 26 Maintenance Adjusting friction Check the friction torque. Use your finger to hold the cam unit securely in place, then set the switch lever to the ON position. Insert a 4 mm hexagon wrench into the chain stabilizer and check the friction torque. Switch lever Cam unit Chain stabilizer...
- Page 27 Maintenance Adjusting friction NOTICE • Do not install the plate unit cover if the plate unit is not fully seated against the switch base. This may result in insufficient sealing, which can lead to corrosion and malfunction of the chain stabilizer assembly. Install the plate unit cover.
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Page 28: Replacement Of The Plate And The Plate Tension Spring
Maintenance Replacement of the plate and the plate tension spring Replacement of the plate and the plate tension spring Removal Set the switch lever in the OFF position. Switch lever NOTICE • If operating the switch lever while the plate unit cover is removed, hold the cam unit down with your finger so that it does not slide out. - Page 29 Maintenance Replacement of the plate and the plate tension spring NOTICE • Hold the plate and rear derailleur body firmly when working, as there is spring tension applied to the plate. Turn the plate to loosen the plate tension spring. As shown in the figure, squeeze the outer casing holder and cable attachment portion together to move the link and turn the plate.
- Page 30 Maintenance Replacement of the plate and the plate tension spring Remove the plate unit cover. Plate unit cover Remove the chain stabilizer and cam unit. Cam unit Chain stabilizer Remove the plate axle. Plate axle...
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Page 31: Installation
Maintenance Replacement of the plate and the plate tension spring Installation Perform the installation in the reverse order from the removal procedure. Apply the dedicated grease to the plate axle. Plate axle Grease application area Grease number: Premium Grease (Y04110000) NOTICE •... - Page 32 Maintenance Replacement of the plate and the plate tension spring RD-RX812 Plate tension spring Plate axle Plate 8 - 10 N·m RD-RX400 Plate tension spring Plate axle Plate 8 - 10 N·m Check that the switch lever is in the OFF position. If the switch lever is in the ON position, be sure to set it to the OFF position.
- Page 33 Maintenance Replacement of the plate and the plate tension spring Set the chain stabilizer into the cam unit as shown in the figure. Check that the cam lobe of the cam unit is in the position shown in the figure. Cam unit Chain stabilizer Cam lobe...
- Page 34 Maintenance Replacement of the plate and the plate tension spring Install the cam unit and chain stabilizer. Pay attention to the positioning of the cam lobe of the cam unit.
- Page 35 Maintenance Replacement of the plate and the plate tension spring TECH TIPS • When installing, it helps to move the Plate plate back and forth while pushing on the cam unit and chain stabilizer. • If there is resistance when moving the switch lever to the ON position, the components are installed correctly.
- Page 36 Maintenance Replacement of the plate and the plate tension spring Install the plate unit cover screws. 1 - 1.5 N·m Plate unit cover screw Twist the plate, install the plate stopper pin. Plate 1 N·m Plate stopper pin NOTICE • Hold the plate and rear derailleur body firmly when working, as there is spring tension applied to the plate.
- Page 37 Please note: specifications are subject to change for improvement without notice. (English) © Dec. 2020 by SHIMANO INC. ITP...
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