0321462 EVINRUDE HOUSING

The use of Extended Life Coolant (ELC) or Heat Transfer Fluid (HTF) in G3600 Engine cooling systems causes seals to deteriorate. Coolant leaks will result. Do not use ELC or HTF in G3600 Engines. Only use coolant that is recommended in Operation and Maintenance Manual, SEBU6400, "Cat Gas Engine Lubricant, Fuel, and Coolant Recommendations ".
Illustration 1 g00895481
Vee engine (1) Coolant outlet to the heat exchanger (jacket water) (2) Water manifold (3) Aftercooler (4) Return line for coolant from the turbocharger (5) Turbocharger (6) Supply line for coolant to the turbocharger (7) Engine oil coolers (8) Elbow (9) Jacket water pump (10) Water pump for the aftercooler and oil cooler circuit (11) Coolant outlet to the heat exchanger (aftercooler and oil cooler circuit)
Illustration 2 g00895482
In-line engine (1) Coolant outlet to the heat exchanger (jacket water) (2) Water manifold (3) Aftercooler (4) Return line for coolant from the turbocharger (5) Turbocharger (6) Supply line for coolant to the turbocharger (7) Engine oil coolers (8) Elbow (9) Jacket water pump (10) Water pump for the aftercooler and oil cooler circuit (11) Coolant outlet to the heat exchanger (aftercooler and oil cooler circuit)Jacket Water Cooling System
Water pump (9) (Illustrations 1 and 2) is located on the right front side of the engine. The water pump has a gear that is driven by the lower right front gear group. Coolant from the expansion tank enters the inlet to the pump. The rotation of the impeller in the water pump pushes the coolant to the side of the cylinder block through elbow (8) .The coolant inside the cylinder block flows around the cylinder liners. The water jacket is smaller near the top of the cylinder liners. This shelf causes the coolant to flow faster for better cooling of the cylinder liner. The coolant is pumped up through water directors and into the cylinder heads. The coolant flows through passages around the valves and around the exhaust gases in the cylinder head.The coolant flows out of the cylinder head through an elbow into water manifold (2). The coolant flows through the manifold to coolant outlet (1). The coolant exits the outlet and flows through a remote mounted water temperature regulator and through the heat exchanger. The coolant then flows back to the expansion tank.Coolant flows from the water jacket at the rear of the cylinder block through supply line (6) to turbocharger (5). Coolant from the turbocharger is returned to the cylinder block through return line (4) . A customer supplied vent line is required from the top of the turbochargers to the expansion tank. The vent line from the connection must be straight and the vent line must have a slight upward slope. The vent must not be obstructed.Aftercooler and Oil Cooler System
Water pump (10) (Illustrations 1 and 2) is located on the left front side of the engine. The water pump has a gear that is driven by the lower left front gear group. Coolant from the heat exchanger enters the inlet to the water pump. The rotation of the impeller in the water pump pushes the coolant to the engine oil cooler bonnet. Coolant flow is divided at the engine oil cooler bonnet. Part of the coolant flows to engine oil coolers (7). The remainder of the coolant flows to aftercooler (3). After the coolant flows through the aftercooler and through the engine oil coolers, the coolant returns to the heat exchanger through outlet (11) .A makeup line from the expansion tank to the coolant inlet helps maintain the coolant to the correct level. A customer supplied vent line is required between the top of the housing for the engine oil coolers to the expansion tank. The vent line from the connection must be straight and the vent line must have a slight upward slope. The vent must not be obstructed.Inlet Control
Illustration 3 g00829027
Schematic of a cooling system with inlet control (1) Orifices that are supplied by the factory (2) Orifices that are supplied by the factory or the customer (3) Vent lines (4) Orifices that are supplied by the customer (A) Turbocharger (B) Cylinder block and cylinder head (C) Jacket water pump (D) Water temperature regulator housing (jacket water) (E) Expansion tank (F) Heat exchanger (G) Engine oil cooler (H) Aftercooler (I) Mixer housing (J) Water pump for the separate circuit (K) Water temperature regulator housing (separate circuit) (L) Expansion tank (M) Heat exchanger (a) Port (b) Port (c) PortThe inlet control maintains a minimum inlet temperature to the water pump. The temperature regulators control coolant flow through the water temperature regulator housing by passing all of the coolant across the regulators. When the coolant temperature is below the rating of the water temperature regulators, the coolant flows through bypass port (b). The coolant flows across the temperature regulators and out of port (a). As the coolant temperature rises, the water temperature regulators open. The coolant from the heat exchanger flows through port (c). The coolant mixes with the remainder of the coolant as the coolant exits the water temperature regulator housing.Outlet Control
Illustration 4 g00829000
Schematic of a cooling system with outlet control (1) Orifices that are supplied by the factory (2) Orifices that are supplied by the factory or the customer (3) Vent lines (A) Turbocharger (B) Cylinder block and cylinder head (C) Jacket water pump (D) Water temperature regulator housing (jacket water) (E) Expansion tank (F) Heat exchanger (G) Engine oil cooler (H) Aftercooler (I) Mixer housing (J) Water pump for the separate circuit (K) Water temperature regulator housing (separate circuit) (L) Expansion tank (M) Heat exchanger (a) Port (b) Port (c) PortThe outlet control maintains a minimum temperature at the outlet from the engine. The coolant flows from the engine outlet across the temperature sensing bulbs in port (a). The temperature sensing bulbs determine the direction of flow through the water temperature regulator housing. When the coolant temperature is below the water temperature regulator rated temperature, the coolant is bypassed around the external heat exchanger. The coolant flows through port (b) to the