Engine preheat hose to the boiler

[Pat roys]

First I would like to say thank you from the bottom of my heart to
all of you on this sight. I purchased my 1999 lxi in the fall of 2012,it needed
some work like they all do at that age. My family has traveled now to all four
corners of this great nation in my bird. We would not be able to do that without all of the knowledge I have gained from this web sight. You guys
are an indispensable source of inspiration and knowledge.
I will try and find an appropriate place on the sight to put pics and descriptions of all the work I have done so far.
But my question of the day, has any one had to replace the engine preheat
hoses from the series 60 engine to the boiler yet ? Mine have ruptured 3 times now in the last two years and left us on the side of the road. I keep splicing but the hose is just shot.
There is two shut off valves on the block but they do not close this circuit off.
The hoses run inside the frame rail and are totally inaccessible from what i can see. I ripped the bedroom floor up last summer on vacation and had two
more ball valves installed to close off that circuit.I will send pics latter.
They leave the engine 1" and are coming into the boiler at 5/8 and 5/8 if I remember properly , i will check today.

Thanks

Pat Roys
Hopkins Mi