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CUMMINS COOLING MODS

KEEPING EGT AND COOLANT TEMPS IN CHECK IN A MODIFIED 6.7L CUMMINS

CUMMINS COOLING MODS

First things first, we positioned a 5-gallon bucket under the ‘12 Ram 2500’s radiator and started draining the original Mopar coolant. With 108,000 miles on the truck, and Cummins’ coolant flush service interval being 97,500 miles (or 60 months) on ‘07.5-’12 6.7L engines, the time had come to start with fresh antifreeze.
Underneath the truck, the four pop clips that hold the plastic under tray in place were removed. A pair of hose clamp pliers then made quick work of the upper and lower radiator hoses. Then we removed the bolts that hold the radiator fan shroud in place, unplugged the fan harness, loosened the fan nut, and pulled the fan and shroud at the same time.
Next, the overflow hose was disconnected from the radiator and the two bolts securing the radiator to the core support were removed. After that, the radiator was pulled, with the leftover coolant trapped inside it drained and disposed of properly.
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Diesel World January 2019, Cummins Dynasty, Sneak Peek : 2020 GM Trucks, Behind the Scenes : Schied Diesel Extravaganza 2019 And More...