[rhandwor]

I looked on ebay typed hose heater tool. The listing for 10 tools had one for $4.95. This will show you what it looks like. Measure the diameter and check at the hardware for some plastic pipe with the same I.D. cut it about 1" long.Then cut it in half lengthwise. Side this in back of the hose and tape it.
Then take a crescent wrench set against the tubing and pull it towards you. This is against the split tubing.
When removing heater hose take a stanley knife and slit the hose then take a screwdriver and put the blade where you cut and twist to open up the hose.
I purchased a J Kent Moore tool. j43181 is a tool number.
The old 3.8 chevys used a similar tool look for this at a parts store.
The tool for air cond hose removal is almost identical and I bought a set at a yard sale for $3.00
Their is a spring or ring which locks this piece. When you push this spring or ring forward their is enough room to push it over a raised up place in the heater outlet then the unit pulls off. Lisle makes A.C. tools for the same type of connectors. They come in a set. They do this to get you into the service shop and sell tools.