MkIII Swing Arm Bushing Play

Folks -

Before taking it apart, I had 1.5mm of play at the end of the swing arm so based on advice here I bought new bushings. Turns out the new ones fit about the same as the existing ones. Bike only has 7,800 miles. Micrometer shows a .02 difference on the end of the pinion showing the wear.

When it came apart the wicks were dry so I have not seen what the play would be with oil.

1. Leave as is with new oil?
2. Use the new bushings?
3. Use new bushings and replace the pin?

Have never seen this degree of play with new bushings, but being new here - maybe a Norton thing?

Thanks guys…

Andy --

Looking at the parts I would go for a new bushings and a new pin, the issue with bushings is that it is hard to really detect how worn they really are as they will have undergone slight crush when being fitted, the pin does not look healthy either which maybe contributing to the play. Ensure that you use genuine pin and bushes as there are numerous fakes out there, there are poly style bushes, but have yet to really see any long term feedback on those yet. The other place to check is the area on the cradle where the bushes face and check for wear there also.

ag12680 said:

Before taking it apart, I had 1.5mm of play at the end of the swing arm so based on advice here I bought new bushings. Turns out the new ones fit about the same as the existing ones.

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As Madnorton says, you may find the new bushes "shrink" slightly when fitted-so I'd suggest you fit the new bushes and re-check the play?
The pin seems dead-on what it should be-but due to the apparent corrosion/wear at one end, I think I'd also want to fit a new one.

Thanks much for the input. Was wondering about the "crush effect" when the new ones are pressed in. The pin wear was odd to me in that it was on the side away from the rear sprocket on the drive side. Would have thought the opposite would be the case given direction of force from the drive chain.