There is some confusion about the proper procedure for greasing Casita bearings, specifically the EZ-Lube bearing fittings.
EZ Lube is not for us:
The E-Z Lube option was designed specifically for the marine application where the axles are constantly being immersed in water. This feature provides a convenient method for purging the water from the hub cavity without having to pull the hub every time. The hubs should be removed every 12 months or 12,000 miles to inspect the bearings and it is imperative to replace the seal at this time to assure that the grease does not leak out the back onto the brake linings rendering the brakes non-functional.
https://www.dexteraxle.com/Contact/FAQ/General
There are multiple items you should be inspecting, per the Dexter manual.
Here is Dexter’s how-to video.