Originally Posted by
DMC1890
Final follow up - in my case, the fatal mistake was attempting to remove the hard line from the 90-deg fitting. As DMC-81 said, you should remove the fitting from the accumulator, while leaving the hard line-to-fitting connection intact. Because I didn't have the proper tools, I thought that removing the hard line first would simplify matters. But, the continued attempts to separate the fitting from the hard line galled the hard line such that the ferrule would no longer seal sufficiently, resulting in a slow drip.
I ended up by cutting the hard line at the ferrule. I then got Hervey's barbed fitting for the accumulator output, and used a bit of high-pressure hose to connect from the accumulator to the remaining hard line. No leaks.