Attacked the crankcases with Engine Cleaner, Diesel
and a tooth brush then finished off with a brass wheel
attached to a drill on the outer surfaces followed by a
stainless steel brush on a dremil for the small spaces.
This is familiar work, had to do a lot of it on the aprilia re-build.
It turned out that there was very light oxidisation on the
outer surfaces of the cases thanks to the layer of dirt,
earth, compost, organic matter but i uncovered two nasty
little details that need attention...
The lower crankcase bolt hole at the final drive bearing
has suffered from the incorrect bolt being inserted at some
stage in a past life. The top case has a section missing
about 10mm wide. Hope to have them back from the aluminium
welders this evening, luckily this is the dry side of the engine.
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