Redneck in training
Elite Member
I used to struggle with zerks a lot in the past. I replaced the original nozzle with brand name etc. Nothing helped to remove it from the zerk. Then I figured it after I took the nozzle appart and took good look how it worked. There is a little rubber piston that serves two things: It pushes the jaws forward so they clamp on the head of the zerk and it provides a seal allowing the grease being pushed in the zerk without leakage. The secret is to to push the nozzle quite hard toward the zerk and hold it few seconds after you finish greasing. This action pushes the piston back releasing the jaws. Then just pull hard on the nozzle to remove it from the zerk. Needles to say that some time you might need to repeat the action.