Here are some photos of an OEM heater hose end, showing the retainer lugs and how far you have to rotate the collar to remove the booger. It ain't as far as you think!
The comments on the photos should tell the story, but just in case, here it is again.
I did not realize that the rotation of the collar was so slight. Maybe counter-clockwise (CCW)1/4" or more, that's all. Press in on the fitting to relieve the pressure on the retaining lugs, and twist CCW. Pull off.
The replacement hoses have a redesigned retainer lug that should be a lot easier to remove, if the need ever arises again. I did see some of the original design advertised on Volvo parts sites, but they might be using an old photo. In any event, if you're replacing the hose, just cut the collar with diagonal cutters, or tin snips. I used a knife with a non-locking blade. Almost got a new nickname. Almost went from "Dirtbag: to "Three-Fingered Dave". Use snips...
And one more thing. The sequence that I uploaded these photos changed during posting. Fortunately, I discovered the change, and made the appropriate corrections to the comments.
- View of lugs after rotating the collar. the lugs are a part of the collar, so when it moves, they move as well.
- Retaining collar rotated about 1/4" CCW. This is enough to withdraw the retaining lugs and remove the hose.
- retaining lugs visible, collar is in "closed" position
- Collar in "closed" position. Molding line on arrow is in line with the one on the elbow.
'04 C70 Ragtop (103K)
'00 S80 T-6 (donated @ 140K)
'95 850 (traded @ 120k)
'83 240DL (crashed @ 303k)
And then there's the '70 240Z and the '58 Chevy Apache, not to mention the motorcycles...
2013 BMW K1600GTL