ADAPTER 5P3501 - Caterpillar

Illustration 1 g01163657
(1) Aftercooler (2) Purge line (3) Purge line (4) Remote tank (5) Exhaust manifold (6) Engine (7) Water temperature regulator housing (8) Engine oil cooler (9) Water pump (10) Auxiliary water pump (11) Keel cooler (12) Keel cooler for aftercoolerDuring engine operation, water pump (9) draws engine coolant from keel cooler (11). The water pump creates coolant flow through the system. The water pump is installed on the front of the timing case. The water pump is gear-driven by the fuel injection pump gear.Water pump (9) forces the coolant through a passage in the front of the timing case to the water jacket in the top left side of the cylinder block. One-third of the coolant flows around the element of oil cooler (8) to the rear of the cylinder block. Two-thirds of the coolant is used in order to cool the cylinder block. The coolant continues to the rear of the cylinder block and the coolant is diverted to the following locations:
Exhaust manifold (5)
Cylinder headThe coolant flows forward through the cylinder head and into water temperature regulator housing (7). If the water temperature regulator is closed, the coolant goes directly through a bypass to the inlet side of water pump (9). If the water temperature regulator is open, the bypass is closed and the coolant flows to keel cooler (11) in order to be cooled. After the coolant flows through the keel cooler, the coolant is mixed with coolant that is returning from exhaust manifold (5) .An auxiliary water pump (10) is also used in order to supply coolant flow to aftercooler (1). The coolant flows through the aftercooler in order to cool the hot inlet air. From the aftercooler, the coolant flows to a second keel cooler (12) in order to be cooled.