If they are 1300 series probably 1/4-28. If 1310 it depends on the brand and location of the zerk. I'm curious how you broke a zerk greasing them.
Four wheel drive allows you to get stuck
in places even more inaccessible.
62 88 Regular
67 109 6cyl NADA x2
74 Lightweight - The Antichrist
95 DI 5-speed
95 D90 5-speed
97 D1 Automatic