I am doing the heater hoses on my 1991 240 tomorrow. I have it drained down and one of the hoses off and the other removed from the heater core end. I know this is a major pain of a job and the one under the manifold seems to be the worst. I know that holding the hose clamps so you can tighten them is one of the problems. I was able to get them all loose and gently removed the heater core end after razor cutting them lengthwise.

Anyway, I did a search and didn't come up with much, I guess because there really aren't many options except to take them off and put the new ones on! I ran out of daylight and didn't get the one off the pipe under the manifold. I am a pretty small guy with average sized hands and arms as far as being able to reach into tight places. Any help is appreciated.