I'm venturing into Class A dept and out of Tow vehicles...But maybe might help someone. Not sure if Cummins has same set up if in MH or in pick up?
My Cummins 5.9 in my tow vehicle(2001 Dodge)the a/c compressor froze up and melted my serpentine belt. Wife noticed little poofs of smoke were coming out from hood. Belt was gummy and very warm. Just a matter of time before it broke. When looking for new belt at part store, I had option of "with or without A/C". I got both belts. I put the "with out a/c" belt on. Being the A/C compressor was still broke and the big town of Royal City WA didn't have any. It allowed me to by pass the a/c pulley and keep all other pulleys going until I could replace a/c compressor on my schedule and not at a garage miles from home. Then after new compressor was installed the "with out a/c" became my spare. So if A/C or belt ever broke again I would be covered both ways, was my way of thinking. I went out to glove box to find notes and of course can't find it. So here is pic from tech manual. Look at diagram at bottom and see "with AC and "without AC" if I recall right I also had to change the belt tensioner in another mounting hole, then change it back. Anyways info is book if your interested, doesn't take PHD.
Again not sure if Cummins in MH is different than in pick up. Sure looks the same to me. Except put in backwards. At our perminate camp cite I've worked on guys DP next to us several times. He spent over $1,000 of overheating problems one year. Kept overheating between AZ and WA. I tested everything (water pump, elec at fan switch etc) And for about 50 cents of dish soap and rinse with water several times solved the problem as dust and road grime plugged up radiator fins and just needed a good cleaning. He still thinks I'm a miracle worker.
