Transmission Line Disconnect
So I have a 2007 V6 Dodge Dakota, and I'm trying to disconnect one of the transmission cooler lines. Seems like it's some type of quick disconnect setup, but I'm not terribly familiar with these types of connectors. It's definitely a 3/8" line, but I've tried two different kinds of disconnect tools, both the cheap plastic 9 piece autocraft ones, and a metal autocraft one. Neither one seems to have a thin enough sleeve to actually slip into the connector to release it (that is my understanding of how they work). There is so little space between the line and the ring around it, that it just kind of pushes on the ring without going in no matter how hard i push.
I'm also wondering about the little white plastic caps. Are they just a protective cap I need to slide out of the way to operate the connector? Or are they somehow used/needed to actually disengage the connector?