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First need to drain her dry, getting to wet-sumping issue.
My "From 1970" WSM shows both a 'crankcase drain plug' and a 'crankcase gauze strainer' bolt in the routine maintenance section.

I see no crankcase drain plug, so I assume the 1-1/2" gauze strainer bolt acts as the drain point?

Cheers.


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'
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Originally Posted by Hugh Jörgen
My "From 1970" WSM shows both a 'crankcase drain plug' and a 'crankcase gauze strainer' bolt in the routine maintenance section.

I see no crankcase drain plug, so I assume the 1-1/2" gauze strainer bolt acts as the drain point?

Yes.
https://andover-Norton.co.uk/en/shop-drawing/4/engine-crankcases-crankcase-filter-tachometer-drive


Strainer and plug is '850'.
https://andover-Norton.co.uk/en/sho...nkcases-filter-breather-tachometer-drive

(200000+ series 750 had the drain plug but no strainer)
https://andover-Norton.co.uk/en/sho...ases-crankcase-breather-tachometer-drive

Last edited by L.A.B.; 11/01/20 7:10 pm.
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The Norton Heavy Twin 500cc and up to 20M3S had the filter type drain. Only the earliest Model 7 (code 12) 1949 had a drain bolt only.


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Cheers gents.


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'
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The wrench they sell looks wimpy to me. You really need one of these.... that way, the bride can participate. Feet up against the frame rail and have at it.

[Linked Image from live.staticflickr.com]1D9D0D9A-7A73-4604-B41D-C130061869DD by First Last, on Flickr

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Originally Posted by Cyborg
<SNIP> OK, now there is a story waiting to be told ... what's the story on the alloy mounting ring for the Enfield twin?
.. Gregg

[Linked Image from live.staticflickr.com]1D9D0D9A-7A73-4604-B41D-C130061869DD by First Last, on Flickr


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It came attached to an Enfield mag that was in a box of stuff that I acquired a few years back. The only Enfield part in there. It’s patiently waiting for me to find an Intercepter. One came up for sale here about 6 months back. Complete and running, so probably should have grabbed it. They don’t seem to come up that often and my basket case situation is already out of control. Used the ring to mount a mag in the mill, so came in handy.

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Originally Posted by Cyborg
The wrench they sell looks wimpy to me.
Arrr, that it does matey. More like a beer opening utensil.


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'
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I replaced mine with one of these on my 71. Have to drain the sump every so often and I didn't like taking the big plug out.
https://www.classicbritishspares.com/products/06-7281


1978 Bonneville T140E
1974 Trident
1970 BSA Thunderbolt
1971 Norton Commando
1972 Norton Commando
1973 Norton Commando
1974 Norton Commando
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Everything will be alright in the end. If its not alright, its not the end.
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Good idea.
Thanks htown.


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'

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