Background: I just purchased a new air compressor. I was surprised to see that the collar on the quick connect coupling is retracted (I'm used to pulling the collar back to insert the male fitting), but figured that it would latch when the male fitting was placed inside.
Question: When placing the appropriate-size male fitting into the quick connect, I cannot get the collar to move. The air compressor came with two of the quick connect couplings, and both have the same behavior. What am I doing wrong? Cheers.