Usage:
784B (5RK) Tractors;
785B (6HK),
789B (7EK),
793B (1HL) Trucks
Description of Change: The water lines group for the 784B Tractor and 785B Truck includes a new elbow that has extra ports required for the field installation of a variable speed fan clutch and VIMS. Plugs and seals are added for use when the extra ports are not used. See Illustration 1.
The aftercooler group for 789B Truck includes a new elbow that has extra ports required for the field installation of a variable speed fan clutch and VIMS. Plugs and seals are added for use when the extra ports are not used. See Illustration 2.
The water lines group for the 793B Truck includes a new tube assembly that has extra ports required for the field installation of a variable speed fan clutch and VIMS. Plugs and seals are added for use when the extra ports are not used. See Illustration 3.
Adaptable To: Illustration 1 and Chart A identify the new component in the 1W-5223 Water Lines Group on 784B Tractors and 785B Trucks. The new 122-3194 Elbow (1), when used with the other components identified in the chart, is a direct replacement for the former 2W-6170 and 107-0759 Elbows. The former elbows are canceled.
Illustration 1. (VIEW FROM REAR OF ENGINE) Identification of new components in the 1W-5223 Water Lines Group. Brake Oil Cooler (A).
Illustration 2 and Chart B identify the new component in the 2W-3715 Aftercooler Group on 789B Trucks. The new 122-3195 Elbow (1), when used with the other components identified in the chart, is a direct replacement for the former 4W-0522 and 107-0758 Elbows. The former elbows are canceled.
Illustration 2. (VIEW FROM TOP OF ENGINE) Identification of new components in the 2W-3715 Aftercooler Group.
Illustration 3 and Chart C identify the new component in the 9Y-8889 Water Lines Group on 793B Trucks. The new 122-3192 Tube Assembly (1), when used with the other components identified in the chart, is a direct replacement for the former 7E-7545 and 105-4307 Tube Assemblies. The former tube assemblies are canceled.
Illustration 3. (VIEW FROM TOP OF ENGINE) Identification of new components in the 9Y-8889 Water Lines Group. Turbocharger Support (A). Aftercooler (B).
