IMPELLER-PUMP 1771056 - Caterpillar

Care Of The Fuel Supply
Too much emphasis cannot be placed on the importance of using only clean diesel fuel. It is important to buy clean fuel and keep it clean. The best fuel can be rendered unsatisfactory by inadequate storage facilities or careless handling.Effort should be constantly expended to prevent contamination of the fuel. An important step is to reduce the number of times the fuel must be handled. When the fuel can be delivered by the distributor to storage tanks and then pumped from the storage tank to the diesel fuel tank, the handling is reduced to a minimum.Care Of The Diesel Fuel Tank
Fill the fuel tank at the end of the day, because the incoming fuel will drive out the moisture-laden air and prevent condensation. The strainer in the fuel tank filler opening should be removed and cleaned regularly.Draining Fuel Tank Sediment Accumulation
Open the drain cock and drain off any sediment or water which may accumulate in the fuel tank before starting the engine. In temperatures below freezing, drain shortly after the engine has stopped to prevent water freezing in the bottom of the tank and other low points in the system.Fuel Filtering System
As either the primary fuel filter element or the final fuel filter element gradually become clogged with foreign material, lack of horsepower will be noticed and the position of the fuel gauge indicator will work back from the original position in the NORMAL (green or approximately 30 PSI) range to the OUT (red or approximately 20 PSI) range. Every 250 hours or when the indicator shows in the OUT (red) range, the metallic primary fuel filter element (if equipped) should be removed and washed. If the indicator still shows in the OUT (red) range, the final filter element should be replaced with a Caterpillar filter element. Other make fuel filters may not meet filtering or capacity requirements. See the topics, PRIMARY FUEL FILTER and FINAL FUEL FILTER.Primary Fuel Filter (Optional)
To remove the filter element, stop the engine and shut off the diesel fuel tank valve. Loosen the nut on the filter cover and lower the filter case. Remove the element and wash in clean solvent or diesel fuel. Reinstall the element. Final Fuel Filter
The filter element collects and holds contaminants and cannot be washed or otherwise restored.To remove the used filter, proceed as follows:1. Stop the engine and close the diesel fuel line valve (if equipped).2. Unscrew and remove filter. 3. Clean the gasket sealing surfaces on the filter bases. 4. Lubricate the new filter gasket with clean diesel fuel.
Do not pour fuel into the new filter element before installing. Prime the system as instructed in the topic, PRIMING THE FUEL SYSTEM.
5. Tighten the filter by hand until the gasket contacts the base, then tighten 1/2 to 3/4 turn more.6. Start the engine and run at 1000 rpm for several minutes and check for leaks. If the engine fails to start, prime the fuel system. See the topic TO PRIME THE SYSTEM. Keep