Following on from Bingo 4 ..... all was revealed..... and as you said possibly the worst hub design ever.
The rollers are tapered inwards (narrow end inward) so not really adjustable as the bearing adjuster butts up
against the outer and when removed the outer wide end does not allow the cage of rollers out of the hub.
The bearing at the speedo gearbox side (right of bike - timing cover side) was found to be difficult to turn and
felt rough.
The bearing at the chain side was difficult to assess as it does not seem possible to remove the large circlip
the dished "oil-seal cup", felt oil seal, seal retaining ring, packing washer and oil-seal spacer....... Or am I wrong ?
I decided half heartedly to see how easy it would be to drift out the speedo drive side bearing with a bent
Commando clutch push rod (as it was on my bench !) from the chain drive side. I used a vernier to measure
to position of the speedo side bearing outer relative to the hub. After a few taps, then harder blows the outer
did not seem to move. And the bearing remained stiff.
I then decided (rashly ?!) to give the oil-seal spacer on the chain drive side as it protruded out of the oil-seal cup
a couple of smart whacks with the copper end of Thor King of Hammers.
On remeasuring the position of the outer of the bearing on the speedo side it seemed to have moved 0.002"
or 0.003" outwards and the bearing was free and smooth to rotate. On inspection the chain wheel bearing also
now turns freely and smoothly.
The bearings are now as I would have expected them to be once properly installed, but I am very aware they were
not like this for a number of miles before my intervention with Thor King of Hammers.
It would seem the whacks with Thor King of Hammers has adjusted the difficult (impossble?) to adjust bearings.
Did I get lucky?
Did the Norse Gods smile down on me ?
Did I achieve Bingo 5 ?
My local wheel builder has a 12 Ton press and seems to know about these Matchless wheel bearings, but now,
knowing a little more about the design and difficulty of adjusting these bearing I am loth to remove and replace
them. Especially as the hub appears to have been totally refurbished by the previous owner.
Any comments and advice gratefully received. Thanks