Originally Posted by
scale
these old rat traps have no end caps. Thats the problem...
how else can you get grease in there?
Those are cheap & cheesy pedals. You can't. Well, you can try shooting some thin white lithium grease in between the spindle and the body, but it's not going to do much good.
Decent pedals are pretty cheap:
http://www.bikepartsusa.com/bikeparts/item/01-117971/