User manual SHIMANO WH-7900-C24-CL ASSEMBLY

[. . . ] If the wheels are used on 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 loose in any way, they may come off the bicycle and serious injury may result. [. . . ] CS-7900 15T, 16T, 15T, 16T, 15T, 17T, 15T, 17T, 15T, 17T, 16T, 17T, 16T, 17T, 16T, 17T, 17T, 17T, 19T, 19T, 19T, 18T, 19T, 19T, 18T, 19T, 21T, 21T, 21T, 19T, 21T, 21T, 19T, 21T, 23T, 24T, 24T, 21T, 23T, 24T, 21T 23T 25T 27T 28T 23T 25T 27T For front 1000 - 1400 N (225 - 315 lbf) Spoke tension value For rear Right (sprocket) side Left side 1200 - 1500 N 600 - 900 N (270 - 338 lbf) (135 - 203 lbf) * These values should be used as a guide only. Sprocket tooth configuration CAUTION The tires should be inflated to the pressure indicated on the tires before use. Use rim tape which can withstand high pressures, otherwise the tires may suddenly puncture and come off, and severe injury may result. 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. A Wide part ac-14T 11T - 21T, 11T - 23T Replacing the spokes NOTICE The Shimano R55HC (high performance) brake shoes use an aggressive compound 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. If non-Shimano parts are used, the area where the spokes fit into the hub unit may become damaged. Before use, check that there are no pieces of metal or other foreign objects sticking to 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 increase the spoke tension. However, be careful not to overtighten the nipples when adjusting the spoke tensions. (We recommended that you ask authorized bicycle dealers to make the adjustments. ) Hook the spokes through the hub as shown in the illustration to install them. At the front, fit the heads of the spokes securely into the slots in the hub unit, otherwise damage may occur. *1 Inner ring For installation of the HG sprockets, use the special tool (TL-LR15) to tighten the lock ring. lbs. } To replace the HG sprockets, use the special tool (TL-LR15) and TL-SR21 to remove the lock ring. Spacer Sprocket spacers Lock ring 11T - 25T, 11T - 27T, 11T - 28T Spoke *2 Hub cap *2 Hub cap The groove is wide at one place only. When installing the CS-7900 (10-gears) freehub, install a spacer in the position shown in the illustration. Spacer Sprocket spacers Lock ring Lock ring Nipple 12T - 23T, 12T - 25T, 12T - 27T TL-LR15 Tool (TL-SR21) Note: If the wheel becomes stiff and difficult to turn, you should lubricate it with grease. Do not apply any oil to the inside of the hub, otherwise the grease will come out. We recommend that you ask authorized bicycle dealers to adjust the spoke tensions if there is any initial play in the spokes and after the first 1, 000 km of riding. For maximum performance we highly recommend Shimano lubricants and maintenance products. [. . . ] (English) WH-7900-C24-CL Wheel After removing the hub axle, remove the freewheel body fixing bolt (inside the freewheel body), and then replace the freewheel body. lbs. } Note: When replacing the freewheel body, replace the freewheel body fixing bolt at the same time. Be sure to apply grease to the the thread of the freewheel body fixing bolt, otherwise looseness or sticking may occur. [. . . ]