VALVE GP-PUMP CONTROL 1687323 - Caterpillar

Poor vessel performance is traditionally believed to be the result of a lack (or loss) of engine performance, when in fact the engine is only one of numerous factors that influence the overall performance of a vessel. Several factors determine the kw (horsepower) demand on an engine. The engine has no control over the demand made upon it by the vessel design, such as hull, prop and driveline design. These same factors also affect the amount of kw (horsepower) available to perform additional work such as to drive auxiliary pumps.If you feel you have a vessel performance problem, first consider the impact of vessel design, loads, propeller and driveline condition, etc. on kw (horsepower) demand. Deterioration of boat systems (cooling, air inlet and exhaust, fuel tanks, etc.) can only lessen the engine's chance to produce power and vessel speed. In the case of poor fuel economy, the engine is not likely to be the cause without the presence of excessive exhaust smoke and/or a significant loss of power.If you feel you have a valid engine performance problem, contact an authorized Caterpillar marine engine servicing dealer for assistance. If your engine is under warranty then the Caterpillar warranty will cover the cost of resolving a valid engine performance deficiency. However, if the engine is not found at fault, all costs incurred will be the responsibility of the owner. Adjustment of the fuel system outside Caterpillar specified limits will not improve fuel efficiency and could result in damage to the engine.Your Caterpillar dealer can determine engine condition and check the engine's external systems using a diagnostic procedure called the Marine Engine Performance Analysis Report (PAR).Caterpillar engines are designed and manufactured using state-of-the-art technology to provide maximum fuel efficiency and performance in all applications. To insure optimum performance in all applications. To insure optimum performance for the life of your engine, follow the recommended operation and preventive maintenance procedures described in this publication.