I'm not sure where 3 shots or 30 shots or pumps of grease will do any good if using the E-Z Lube process. It takes almost an entire cartridge of grease per hub to just fill the hub before grease will start coming out past the outer bearing, and these axles do not come from Dexter filled with grease. The exact procedure for using the E-Z Lube is spelled out on pages 57-58 of this Dexter manual:
https://www.dexteraxle.com/docs/defa...sn=cfe1e328_42
I used the E-Z Lube one time after running the trailer we have about 6,000 miles, doing the lube exactly as described in the Dexter manual, and after another 6,000 miles, had three of the four brake assemblies greased up. That was the last time I used the E-Z Lube. Four new brake assemblies, four drums turned, and other assorted materials cost over $400, so the E-Z Lube was not cost effective for me or worth my labor to risk doing it again.
Also, on page 58, note 5, it clearly states that if a hub is removed from an axle with the E-Z Lube, the seal must be replaced to avoid the risk of getting grease on the brakes.