COLLAR-CAMSHAFT 3830392 - Caterpillar

The high voltage that is produced by an operating generator set can cause severe injury or death. Before performing any maintenance or repairs, ensure that the generator will not start.Place the engine control switch in the "OFF" position. Attach "DO NOT OPERATE" tags to all starting controls. Disconnect the batteries or disable the starting system. Lock out all switchgear and automatic transfer switches that are associated with the generator.
Priming the fuel system fills the fuel filter. Priming the fuel system removes air bubbles from the fuel system. Prime the fuel system under the following conditions:
Fuel system that is run dry
Storage
Fuel filter maintenance
Disconnecting fuel lines and installing fuel lines
Repair of leaks in the fuel lines
Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. To help prevent possible injury, turn the start switch off when changing fuel filters or water separator elements. Clean up fuel spills immediately.
Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately.
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Loosen the vent screw (1) on the fuel filter.Note: The priming lever of the fuel transfer pump cannot be operated if the cam is at the maximum lift position. If this occurs, the crankshaft must be rotated one revolution.
Operate the priming lever (2) for the fuel transfer pump until the flow of fuel from vent (1) is continuous and free of air bubbles.
Tighten vent (1) .
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Typical example
Loosen vent (3) on the fuel injection pump.
Illustration 3 g00946761
Note: The priming lever of the fuel transfer pump cannot be operated if the cam is at the maximum lift position. If this occurs, the crankshaft must be rotated one revolution.
Operate the priming lever (2) for the fuel transfer pump until the flow of fuel from vent (3) is continuous and free of air bubbles.
Tighten vent (3) .
If the engine fails to start within 15 seconds, release the starter switch or button and wait 30 seconds to allow the starting motor to cool before attempting to start the engine again.
Crank the engine. Start the engine. The engine may run rough. Run the engine at low load until the engine runs smoothly. If the engine will not start, further priming may be necessary. If the engine starts and if the engine continues to misfire or smoke, one or more of the following conditions may be present:
The fuel system requires more priming.
There may be an air leak in the fuel system.