PUMP-HAND 4C9710 - Caterpillar

Engine C15 and C-15 All C18 and C-18 EnginesDescription Of Change: New troubleshooting is now used to help properly diagnosis acceptable leakage from the water pump weep hole.Adaptable To: The following changes are adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.A small amount of weepage across the surface of the water pump seals is normal. The weepage is required to provide lubrication for this type of seal. A weep hole is provided in the water pump housing to allow coolant to drain from the pump housing and not accumulate in the water seal and oil seal chamber.