This document provides instructions for removing and installing the engine oil pump and water pump on a Caterpillar 3054C engine. It describes the removal and installation procedures in step-by-step detail, highlighting important safety notices and precautions. The removal procedure for the engine oil pump involves removing mounting screws and other components. The installation procedure describes cleaning, inspecting, and lubricating parts before securing the pump with mounting screws. The water pump removal requires draining coolant and removing mounting screws and hoses. Installation involves installing a new gasket and securing the pump with threadlocked mounting screws.