GROMMET 0869800 - Caterpillar

Illustration 1 g06278572
G3512H cooling system
Jacket Water System
Illustration 2 g06278197
G3512H cooling system
(1) Inlet for the jacket water pump
(2) Jacket water pump
(3) Bypass tube
(4) Tube for the coolant supply to the aftercooler (first stage)
(5) Tube for the coolant supply to the front of the cylinder block
(6) Oil cooler
(7) Tube for the coolant supply to the back right side of the cylinder block
(8) Tube from the cylinder head
(9) Lower water temperature regulator housing
(10) Coolant manifolds
(11) Water temperature regulator housing
(12) Outlet for coolant to radiator or heat exchanger
(13) Aftercooler (first stage)
Illustration 3 g06278865
(10) Coolant manifold
(13) Aftercooler (first stage)
(14) Coolant supply from cylinder block to turbocharger
(15) Turbocharger
(16) Coolant return from turbocharger to manifold
(17) Vent locationThe jacket water pump (2) is 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 a radiator or a heat exchanger enters the water pump inlet (1). The rotation of the impeller in the jacket water pump pushes the coolant through the system.The flow of the coolant is divided. Some of the coolant from the jacket water pump flows through a tube (4) to the first stage of the aftercooler (13). The coolant leaves the aftercooler and supplies the front of the cylinder block (5). The remainder of the coolant flows through the engine oil cooler (6). The coolant leaves the oil cooler and supplies the back of the cylinder block (7). This coolant is mixed throughout the water jacket with the coolant that flows to the front of the cylinder block.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 into the cylinder heads. The coolant flows through passages around these items in the cylinder head: valves, valve seat inserts, spark plug adapter and exhaust outlets.The coolant exits the cylinder heads through tubes (8) into the coolant manifolds (10). Coolant flows through the line (14) to the turbocharger turbine housing (15). The coolant returns to the coolant manifold (10).Air is vented from the high points of the cooling system (17). 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.The coolant manifold directs the coolant to