Commando Lay Shaft bearing

[Russ Hunt WQ3X]

 I did mine with the gearbox in the bike following this article:
Layshaft Bearing Upgrade

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Layshaft Bearing Upgrade

David

Of and for Norton Motorcycles
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The article has you heat the case then use the layshaft itself to remove the bearing. It worked out for me, but sometimes the inner race will come off the layshaft and then you will need the puller. I used the fancy ball bearing recommended by Mick Hemmings and ended up replacing a bunch of other things in the gearbox too, like all the bushings and bearings and the mainshaft.Good luck,Russ in UBE



    On Monday, April 5, 2021, 10:36:54 AM EDT, David Behnken <davidebehnken at gmail.com> wrote:  
 
 Morning Eric.
I believe Brian Safer's lay shaft bearing in his '74 Mark2a was starting to go last summer and he replaced it.  If I recall correctly, his kickstart lever started to show the telltale signs of upcoming bearing failure and Dan Sellers gave him a heads up that it needed attention sooner rather than later.  The good news is, as Frank said, it's relatively easy to get to and not like you need to take half the bike apart to make the repair.  If I remember correctly, people often replace the ratchet spring and/or gear change return spring and check the kick starter pawl when they're in there but I could be wrong. (?)  Maybe someone who knows for sure can chime in.  I have yet to tear into a gearbox myself so I have no first hand knowledge.   
David B




  
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