The Bonnie has been suffering from a little wet-sumping. That’s motorcycle incontinence to the general public; with this Triumph typically when a mote of debris has been sucked up from the scavenger into the oil pump. Itself a pair of pistons driven from an eccentric pin off the inlet camshaft.
Sprung ball bearings prevent backflow but can be jammed open with said unwanted grunge. Access and disassembly is straight forward under timing cover.
Buttoned-up, kicked over and timing sweetened. Took the old gal around the block and all seems good.
geordiebiker.com 
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