Cummins is not able to replace heater hoses!

Go to a Parker Hose supply and tell them your problem. They specialize in problems and love a challenge. Have worked with them for years on heavy equipment and an RV would be a fun project for them to tackle.

Anything can be done.

It's the impossible that is expensive.

Sorry you had this problem.

There is nothing that says that the replacement hoses have to run exactly like the old hoses. If you can get to both ends of the old hose, just disconnect the ends and run the new hoses below or next to the frame rails. They make padded hose clamps that could be used. I would replace the old rubber hose with the newer silicone heater hose that will last for the life of your coach.

Ranger Smith wrote:
You mean they can't attach the new to the old and pull it through while pulling out the old one. Like snaking a wire. Sounds like they just didn't want to do it

You obviously have never looked at a RV pusher Diesel chassis. The wires and hoses are run BEFORE they complete the chassis build and the RV maker then installs either foam or a heavy silicone type sealant at various points along the C channel from front to rear that makes it impossible to use a original wire or hose to snake it thru. ALL the hoses and wiring is also wire tied about every 18 to 24 inches from front to rear. Doug

Call Spartan and ask how it is done. Probably put on by the chassis manufacturer or coach builder so Cummings may not have the knowledge on how to do it

Yes, they can be replaced but it is an extremely labor intensive job. You have to access the inside storage bay areas where the frame rail runs thru. You then have to dig out the sealant they used at different access points thru the frame C channel and make access holes to run the new hoses. This is the same thing that would have to be done if one of the Dash AC hoses needed replaced. Either they have people that are not trained to do the job or they do NOT want to do the job. I would estimate that it would take up to 10 hours to do the job correctly. Doug

I am about to have to replace a hydraulic hose (Just now said hose has nothing to do, it is NOT a brake or safety related hose.. But when I pulled the jack it was attached to the end broke on the hose so I need to pull it, take it to a hose guy and have him put a new end on it).

Sometimes when they run 'em along they ZIP tie stuff together, if you can not get to all the ZIP ties you have a problem.

Sometimes (Epically if its run in conduit) they don't zip tie 'em.

How did they do yours? I have no clue.

You mean they can't attach the new to the old and pull it through while pulling out the old one. Like snaking a wire. Sounds like they just didn't want to do it