Oil Cooler Explanation

OIL COOLER DESCRIPTION
The oil cooler (Fig 1) #1 is attached to the top of the oil filter housing (Fig 1) #2 which is located in the V of the cylinder block. The oil cooler is a plate style coolant-to-oil heat exchanger.

OIL COOLER OPERATION
Oil flows from the engine oil pump to the oil filter housing inlet (Fig 2) #1and to the oil filter element located within the oil filter housing. After the oil is filtered it travels internally through the engine oil cooler and then to the main oil gallery (Fig 2) #5.

Coolant flows from the right cylinder block water jacket (Fig 2) #3 and from the left cylinder block water jacket (Fig 2) #4 into the housing. The coolant flows through the oil cooler and exits the housing from the rear hose nipple (Fig 2) #6 where it is returned to the water pump. A coolant by-pass in the housing is designed to direct excessive coolant flow around the oil cooler for continuous circulation.

OIL COOLER REMOVAL
NOTE: The oil cooler can not be cleaned out. In the event that the engine requires rebuilding or replacement, replace the oil cooler.

NOTE: The oil cooler is replaced as an assembly with the oil filter housing. For removal, refer to
HOUSING, OIL FILTER, REMOVAL

OIL COOLER INSTALLATION
NOTE: The oil cooler is serviced as an assembly with the oil filter housing, For installation of the oil cooler, refer to HOUSING, OIL FILTER, INSTALLATION