TURBOCHARGER GP 8N1447 - Caterpillar

Raw Water Circuit
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Front view
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Left side view
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Top view
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Right side viewRaw water is drawn in through the inlet of the auxiliary water pump. The raw water is forced out of the pump, through the elbow and into the lower left side of the heat exchanger. The raw water flows through the heat exchanger and exits through the elbow on the top right side of the heat exchanger. The raw water is discharged through a tube on the right side of the engine. The discharge tube is available with a single outlet or a dual outlet.Coolant Circuit
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Front view
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Right side view
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Top view
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Left side view
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Rear viewThe coolant leaves the heat exchanger through the elbow on the lower right of the heat exchanger. The coolant then enters the jacket water pump. The flow of the coolant splits. Part of the coolant flows through a tube, into the aftercooler and into the rear of the cylinder block. The other part of the coolant flows through the oil cooler and the coolant splits again. Part of the coolant goes into the right turbocharger. Part of the coolant goes into the lower rear of the cylinder block.Some of the coolant that flows through the left side of the block exits the block on the left side. This coolant flows to the left side turbocharger. Coolant also flows through the block to the cylinder heads. The coolant flows out of the rear of the cylinder heads to the elbow at the base of each turbocharger. The flow from both turbochargers exits through tubes on the top of each turbocharger. The coolant flows to the elbows at the base of each turbocharger. The coolant flows to the exhaust risers. This flow continues from the exhaust risers through the exhaust manifolds and into the cylinder heads. The coolant joins the other coolant within the cylinder heads. The coolant flows from the cylinder heads to the deaerators. This coolant combines with other coolant and the coolant returns to the upper left side of the heat exchanger.Coolant Conditioner
Some conditions of operation can cause pitting on the outer surface of the cylinder liners and on the cylinder block surface next to the liners. This pitting is caused by corrosion or by cavitation erosion. A corrosion