Engine cooling system — design description (Sierra)

1 – coolant pump, 2 – radiator shroud, 3 – thermostat, 4 – thermostat cover, 5 – coolant temperature sensor, 6 – coolant pump drive pulley, 7 – V-belt, 8 – V-belt tensioner roller, 9 – crankshaft pulley, 10 – fan and alternator drive V-belts, 13 – fan, 14 – fan shaft, 15 – alternator pulley, 16 – brush, 17 – radiator, 18 – coolant temperature sensor, 19 – expansion tank, 20 – coolant level sensor