There are online copies of the manual and parts book.
https://issuu.com/sealycycleservice/doc ... iiies-1975
http://britmoto.com/manuals/Manuals/850_man.pdf
The parts drawings at Andover Norton are also useful.
https://andover-norton.co.uk/en/shop-drawings/7
Use the Fig.H3(a) diagram in the manual for the rear wheel assembly because the parts book diagram isn't completely accurate, also note that some copies of the Mk3 manual say in section H4, that the rear wheel lock ring is LEFT HAND thread, which is not correct, it's RH.
No, the gap is normal.
The lower shock bolt with the round head and flat under it, looks to be the right-hand bolt (which passes through, and also secures the caliper plate).
The LH lower shock bolt should have a shallow hexagon.
RH lower shock bolt
https://andover-norton.co.uk/en/shop-de ... ottom-bolt
LH
https://andover-norton.co.uk/en/shop-de ... thin-head-
The 9/16" nut on the 'dummy axle' may be the front wheel item, (the Mk3 rear nut would normally be a nylock) but in any case, that nut is fitted back to front.
There should also be a thick washer between the chain adjuster and the nut, as the shoulder (with the flats) of the dummy axle often extends through the assembly and without the washer the nut can bottom out against the shoulder before the assembly is fully tightened.
Well, it isn't positioned correctly and that washer between the caliper bracket and chain adjuster does not belong there.
