1983 R100RS Remove Timing Chain, Crankshaft Timing Sprocket & Nose Bearing

I remove the inner timing cover to get access to the timing chain, the crankshaft timing sprocket and nose bearing, the timing chain tensioner and the chain rubbing block (aka, slide rail).

Inner Timing Cover Exposed After Electrical Components Removed

Inner Timing Cover Exposed After Electrical Components Removed

Inner Timing Cover Removed

Inner Timing Cover Removed

The chain, sprocket, nose bearing, chain tensioner and rubbing block wear and this affects timing. The wear can be great enough that you can hear the timing chain rattle.

What's Under The Inner Timing Cover

What’s Under The Inner Timing Cover

You can read about how I do this work here:

I made a short video summarizing the procedure that you will find here.

I will replace the crankshaft sprocket, nose bearing, chain tensioner, rubbing block and the internal components of the oil high pressure relief valve. I will post a separate write-up showing how I do that.

2 thoughts on “1983 R100RS Remove Timing Chain, Crankshaft Timing Sprocket & Nose Bearing

  1. Thank you Brook! All the work you do in making these videos and write ups is so very helpful when working on my own 1992 R100RT.
    The detailed pictures along with great explanations of every move is invaluable!

    • Hi Mike,

      Thank you for the compliment. Maybe one day I will get to rebuild a “later” airhead, such as yours, and folks won’t have to extrapolate from the 1984 and earlier bikes that I have worked on so far.

      Best.
      Brook.

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