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drive side nut

Submitted by Xanna_jeannett… on Tue, 31/03/2020
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Light Twins

hello can anyone tell me the thread size of the drive side nut that holds the rotor and twin-row sprocket in place  and were I could get a  spare one         yours anna j 

Submitted by nicholas_clarke on Tue, 31/03/2020

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Sorry Anna, I've had a look at NOC shop and Norvil and neither list the nut.  The Navigator parts list isn't any help it just provides the part number - 22015.   I will keep looking.....  Nick

 

Submitted by Xanna_jeannett… on Tue, 31/03/2020

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hello Peter and Nicolas  thank both that's helped somewhat  now I can find a 1/2 BSF nyloc Nut On eBay fasteners what I need it for it to remove  the stud in the drive side crankshaft so  can  then get the sprocket puller on and remove it along with the clutch basket  and then fit the sprocket back on with the twin-row chain  so then I can get my big mole grips on the chain, So Then I can remove the worm  gear on the timing side  As so one as overtightened it  up and it will not budge  without some persuasion  and yes I do know its a left-handed tread  just like my big twins  tonight I have striped the front end  next up is a tray with a drop  of oil in the catch the ball bearing from the headstock and remove the bottom part of the headstock  stanchions and sliders bottoms removed all that left is a rear  mudguard   oil tank and battery box and lower half of the engine and box  and frame is then clean of its parts  next is to stirp the old paint off and prepping for the new undercoat my mini gas welder will  come in to do its part of removing some small dings out of the fuel tank along with a BA 3 screw that snapped off  for tank  badges  lot to do I will keep me busy in this covid -19 crissts          yours  anna j            

Submitted by dennis_thompson on Mon, 06/04/2020

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Anna,

I removed the drive side sprocket using two bolts screwed into the sprocket holes and a bar bearing on the sprocket nut that had been loosened by a few thread. I tightened each bolt up half a thread until it pulled the sprocket off. I kept tapping the sprocket with a hammer lightly to 'shock' the sprocket as this helps break the grip. I could not get a puller behind the sprocket.

Also, before I removed the sprocket I loosened the clutch basket nut and using a brass bar inside the drive chain, bearing on the drive sprocket to lock the chain. Otherwise you have to lock the gearbox mainshaft somehow and that is not easy.

Dennis

 


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