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Rear Sprocket Mounting

Discussion in 'The Garage' started by BigMacDouble, Mar 30, 2021.

  1. BigMacDouble

    BigMacDouble XS400 Enthusiast

    Hey there so I recently disassembled the rear wheel to replace the bearings.

    I Reassembled everything but this doesn’t seem quite right . Are the dampers supposed to slide into the sprocket slots ? I don’t think I put it on backward.

    manual says something about milled flat surfaces on crushed drive pins?

    Attached Files:

  2. amc49

    amc49 XS400 Junkie

    The drive pin flats face outwards and sprocket may have a groove or step in the back the flats fit in.

    The pins fit as deep in the rubber dampers as possible with the sprocket still able to rotate on wheel but otherwise held tightly to not flop off the wheel pilot. The center big snap ring needs a washer under it to tighten it up but may need custom thickness there to get the drive pins deeper into rubbers. Sprocket checks by itself to wheel with the snap ring installed and no pins in it, the sprocket must be able to move freely on wheel but with a minimum amount of looseness, ONLY enough to be able to move. It has to move or the dampers are not used at all; the sprocket then may as well be bolted on solid as a rock.

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