This always works for me, I skip the plastic mallet and go directly to the real hammer (or rock). The cloth or fabric is the step you do not want to overlook. Sometimes working the controls will relieve some pressure.Put a couple of folds of fabric on top of the coupler and hit it with a plastic mallet or hammer. The fabric is optional if you don't mind hydro fluid showers.
Just curious if you moved your control for the FEL in all directions before you removed it (with engine off)? According to the JD video on line they say you should do that to relieve all pressure before unplugging it???
Thats why wrapping a rag over the QD is very important. Fluid can also be injected into the skin causing gangrene.Its a darn good idea to be wearing safety goggles when applying pressure to the hose end. When you finally get it pushed in, that fluid may well spray everywhere - with pressure behind it. The first time this happened to me, fluid went right into my eyes. Painful and scary, but I can still see. It isn't worth the risk - use goggles!
The pressure build-up is often on the implement side, so that won't help.
That could make a difference, as well as the loader sitting in the sun and the fluid heating up and expanding.I'm only an amateur..... I've only had mine off once so far...Do you think it would matter if the FEL was being used and the fluid was hot then you unhooked it? I'm just thinking that pressure shouldn't build up if that was the case....????
Like I said I'm just a rookie!!