This weekend I was changing a few parts on my 1680 and thought I would take a few pics along the way.
Heres how it started
and with the new parts
I didn't take any pics of how to take it apart as there are heaps of posts showing how to do it.
Once it was apart I used a file on the crown guards and case edges to round them off a bit, I also drilled out the lug holes, then sanded the case and finally polished it with a dremmel. Note the groove on the top of the case for a gasket... I didn't have a gasket to fit but have some on order (part number 29-325-10)
Comparing the crystals, new one is on the left.
Comparing the inserts
And the tubes,
Unfortunately the gen tube was not a straight swap as on my 1665, so I may need to retap the case not sure yet but it is not installed at the moment.
All back together, ready to go