3827411 Volvo.Penta Bracket

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 maximum amount of water which the water separator can hold is 0.8 pt. (0.4 liter). At this point the water fills the glass to 3/4 full. Do not let the water separator have this much water before draining the water. After the water level is at 3/4 full, the water separator loses its efficiency and the water in the fuel can go through the separator and cause damage to the fuel injection pump.Drain the water from the water separator every day or when the water level gets to 1/2 full. This gives the system protection from water in the fuel. If the fuel has a high concentration of water, or if the flow rate of fuel through the water separator is high, the water separator fills with water faster and must be drained more often.To drain the water separator, open the valve in the drain line and the valve at the top of the water separator. Let the water drain until it is all out of the water separator. Close both valves.Fuel System Timing
The timing of the fuel system is according to the camshaft installed in the housing for the fuel injection pumps (15). The difference between the camshafts is in the different angle between the lobes on the camshaft and the slot for the timing pin. The charts give the camshaft for the fuel injection pump and governor group and the timing which the engine has with the camshaft installed.
IDENTIFICATION MARKS
A. Part number of fuel injection pump and governor group. B. Identification number on housing. C. Location of part number marks on camshaft. Early camshafts had no part number marks on the camshafts. All 4 cylinder camshafts without part number marks at location (C) are 4N4312. If the part number of the fuel injection pump and governor group is not in the chart or if it has a different camshaft, make reference to the parts book, or to TECHNICAL PARTSGRAM; COMMON USAGE IN SLEEVE METERING FUEL SYSTEMS, 4 and 6 PUMP GROUPS, Form No. FEG00707.The 3306 Engine can have either one of two different camshafts for the fuel injection pump. The 8.5° camshaft is for the 3306 Engines which have a turbocharger, an aftercooler and an automatic timing advance unit. ALL other 3306 INDUSTRIAL AND MARINE ENGINES use the 13.5° camshaft. The 3304 Engine can have either one of two different camshafts for the fuel injection pump. The 13.5° camshaft is installed in all the later 3304 fuel injection pump and governor groups. It gives better fuel combustion characteristics than the 12.5° camshaft. Automatic Timing Advance Unit
On some engines, an automatic timing advance unit connects the drive sleeve on the end of the camshaft to the timing gears in the front of the engine. The unit changes the timing of the fuel system according to the engine speed to give better combustion of the fuel at all levels of engine operation. The unit in these engines changes injection timing from 8° 30' BTC, at 1200 rpm, to 14° 30' BTC,