BUSHING AS 2119085 - Caterpillar

Personal injury or death can result from a fire.Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire.Clean up all leaked or spilled fuel. Do not smoke while working on the fuel system.Turn the disconnect switch OFF or disconnect the battery when changing fuel filters.
Prime the fuel system in order to fill dry fuel filters. You must also prime the fuel system after any one of the following conditions exist:
The fuel system has run dry.
The engine has been in prolonged storage.
The fuel filter has been cleaned.
The fuel filter has been replaced.Note: If the engine does not have a fuel priming pump, refer to Step 4.
Unlock the priming pump, and operate the priming pump until a resistance is felt. This procedure will probably require a considerable amount of priming.
Push in the plunger, and hand tighten the plunger.
Do not crank the engine for more than 30 seconds. Allow the starter to cool for two minutes before cranking again. Turbocharger damage can result if the engine rpm is not kept low until the oil gauge display verifies that the oil pressure is sufficient.
Crank the engine. If the engine starts and the engine runs rough, run the engine at low idle. Continue running the engine until the engine runs smoothly.
During periodic service, DO NOT remove the fuel filter plug that is in the fuel filter base in order to purge air from the fuel system. The periodic removal of the fuel filter plug will result in increased wear on the threads in the fuel filter base. This wear leads to fuel leakage.
Open the vent valve (if equipped) on the fuel injection pump's housing.
Operate the priming pump until the flow of fuel from the vent valve is continuous and the flow of fuel is free of air bubbles. If the engine does not have a fuel priming pump, crank the engine. Crank the engine until the fuel flows freely and until the fuel is free of air bubbles.
Close the vent valve. Then, push in the plunger. Hand tighten the plunger.
Crank the engine. If the engine starts and if the engine runs rough, run the engine at low idle. Continue running the engine until the engine runs smoothly. Note: If the engine will not start, more priming is necessary. If the engine continues to run rough, more priming is necessary as well.
Do not let the tops of fuel nozzles turn when the fuel line nuts are loosened or tightened.The nozzles will be damaged if the top of the nozzle turns in the body.The engine will be damaged if a defective fuel injection nozzle is used because the shape of fuel (spray pattern) that comes out of the nozzles will not be correct.
Illustration 1 g00290109
Loosen the fuel line nuts at the valve cover base. Loosen these line nuts one at a time.
Operate the priming pump until the flow of fuel from the fuel line is continuous and the flow of fuel is free of air bubbles.
Push in the plunger, and hand tighten