GRADE CONTROL AR-LASER 2529697 - Caterpillar

Illustration 1 g01112870
(1) Shunt tank
(2) Vent line
(3) Left side turbocharger
(4) Radiator
(5) Dual thermostat housing
(6) C27 engine
(7) Cab heater
(8) Right side turbocharger
(9) Secondary power train oil cooler
(10) Primary power train oil cooler
(11) Engine oil cooler
(12) Jacket water pump
(13) Hydraulic oil cooler The jacket water pump (12) provides coolant to the engine oil cooler (11) and to the power train oil coolers (9) and (10). Coolant then flows through the engine block and into the cylinder heads. From the cylinder heads, the coolant flows into a thermostat housing (5). The thermostat then directs the coolant to either the jacket water pump (12) for recirculation or to the radiator (4) for cooling depending on the temperature of the coolant. Coolant then flows through the radiator with a small amount of flow of the coolant to the hydraulic oil cooler (13) before returning the coolant to the jacket water pump (12). Also, a small amount of coolant flows to turbochargers (3) and (8) for cooling, and then back to the shunt tank (1). Coolant from the shunt tank then flows to the jacket water pump.