Looking in my copy of the -12 manual, 'Change 8 4.36.1' (PDF page 150), figure 4-30 of the oil filter assembly, i am in need of parts 8 and 9 ('retainer' and 'spring' respectively).
I just picked this up from Meade and it is essentially immaculate - all new wiring, fresh air filter, clean fuel filter and oil filter cans, gauges all good (well, HZ meter seems to be a little wonky), but it appears to be missing the spring and retainer as shown in figure 4-30. I assume that without those pieces, the oil filter assembly is essentially acting as if it was in bypass (ie, little/no oil is flowing through the filter).
I somewhat recklessly fired the machine up after going through it per sewerzuk and other's checkout procedures and it builds and holds oil pressure, generates AC as it is supposed to and all seems well. But I think long term I want that spring+retainer... Anyone have a source? Delks?