D398A, D398B and D399 Industrial And Marine Engines
Description of Change: A raw water oil cooler of a different design is now used in the engine oil cooler group which is available for D398A, D398B and D399 Industrial and Marine Engines. The new oil cooler uses a gasket to give a seal between the flange on the tube bundle and the outer body. Formerly, the flange on the tube bundle was welded to the outer body.
Also, a double source temperature regulator is now used instead of the former single source temperature regulator.
Adaptable As: The new heat exchanger assembly (oil cooler) and temperature regulator are direct replacements for the former parts as shown in the chart which follows: