The main drive belt or serpentine belt is important on any vehicle, but some have more than one belt to drive components from the crankshaft. The Dodge Ram and similar truck models have one true serpentine belt, a multi-ribbed belt that fits into grooves on various pulleys, that Dodge suggests inspecting for wear every 15,000 miles or 12 months.
Disconnect the negative battery terminal. Because the electric fan can start even without the vehicle running, some mechanics suggest disconnecting the battery terminal while working in the serpentine belt area.
Locate the serpentine belt tensioner pulley. The belt tensioner pulley will have a bolt on its side.