PIN AS 1468010 - Caterpillar

General Information
AFTERCOOLED ENGINE ARRANGEMENT SHOWN
1. Turbocharger. 2. Air filter. 3. Exhaust manifold. 4. Aftercooler. 5. Gauges (an attachment). 6. Oil breather. 7. Bleed valve for fuel injection pump. 8. Governor control lever. 9. Flywheel housing. 10. Priming pump. 11. Electric starting motor. 12. Heat-Start switch. 13. Oil pressure switch. 14. Cover for drive gear for fuel injection pump or automatic timing advance unit. 15. Cylinder head. 16. Engine oil cooler. 17. Inlet manifold [a part of cylinder head (15)]. 18. Coolant flow switch. 19. Cover for timing pointer. 20. Alternator. 21. Engine information plates. 22. Damper. 23. Engine oil filter.The 3304 and 3306 Industrial and Marine Engines are part of a series of 4.75" (120.6 mm) bore, 6.00" (152.4 mm) stroke, in line engines. This book is for engines equipped with sleeve metering fuel systems. They are available either naturally aspirated (without turbocharger), with a turbocharger, or with a turbocharger and an aftercooler. All of these engines run counterclockwise when seen from the flywheel end.The 3304 Engine has four cylinders with a 425 cu. in. (7.0 liter) displacement. The firing order is 1, 3, 4, 2. The engine weight is approximately 1600 lb. (720 kg) without coolant or oil.The 3306 Engine has six cylinders with a 638 cu. in. (10.5 liter) displacement. The firing order is 1, 5, 3, 6, 2, 4. The engine weight is approximately 1940 lb. (880 kg) without coolant or oil.Fuel System
SCHEMATIC OF FUEL SYSTEM
1. Constant bleed valve. 2. Disc. 3. Siphon break orifice. 4. Priming pump. 5. Fuel injection pump. 6. Fuel injection valve. 7. Bleed valve. 8. Fuel return line. 9. Fuel supply line [optional water separator (W.S.) installation is shown by dash lines]. 10. Fuel tank. 11. Fuel filter. 12. Channel. 13. Check valve. 14. Check valve. 15. Housing for the fuel injection pumps. 16. Check valve. 17. Bypass valve. 18. Transfer pump.Introduction
The Sleeve Metering Fuel System is a pressure type fuel system. The name for the system is from the method used to control the amount of fuel in the fuel injection charge. This system has an injection pump and an injection valve for each cylinder. The injection pumps are in the fuel injection pump housing on the right side of the engine. The injection valves are in the precombustion chambers in the cylinder head.Water Separator
Some engines have a water separator. The water separator is installed between the fuel tank and the rest of the fuel system. For efficiency in the action of the water separator the fuel flow must come directly from the fuel tank and through the water separator. This is because the action of going through a pump or valves before the water separator lowers the efficiency of the water separator.The water separator can remove 95% of the water in a fuel flow of up to 33 gph (125 liter/hr) if the concentration of the water in the fuel is 10% or less. It is important to check the water level in the water separator frequently. The