SEAL-WIPER 2330619 - Caterpillar

3500 Family Of Engines;
994 Loaders;
776B Tractors;
777B, 785, 789 TrucksDescription of Change: New auxiliary water pump groups are used. The drain hole in the housing assembly changed to provide improved sealing. Formerly a copper gasket (washer) was used between the housing and the drain plug. The drain hole in the housing now uses an o-ring seal. In vehicular applications, a new elbow and seal are installed in the drain hole. The used of the o-ring seal will help prevent leaks.
Location of new drain plug (2) and o-ring seal (1) on new auxiliary water pump groups. In vehicular applications the drain plug is replaced by a new elbow.Adaptable To: The new 7E9781 Auxiliary Water Pump Group is a direct replacement for the former 5N5978 Auxiliary Water Pump Group in all but the vehicular applications. In the radiator groups in the vehicular applications (994 Loaders; 776B Tractors; 777B, 785, 789 Trucks), the former 7J8611 Elbow and 4B8407 Gasket have been replaced by the new 308276 Elbow and 3J1907 O-ring Seal. The new elbow is installed in the drain hole in the bottom of the auxiliary water pump housing in place of the drain plug. The new 7E9782 Auxiliary Water Pump Group is a direct replacement for the former 9Y8176 Auxiliary Water Pump Group used on 3512...4KC, and 3516...3RC Spark-Ignited Engines.