TRANSMISSION G 0686223 - Caterpillar

Do not loosen the fuel lines at the fuel manifold. The engine components may be damaged.Do not remove the fitting in the fuel filter base in order to release air from the fuel system while priming the engine. Periodic removal of the fitting will result in increased wear of the threads in the fuel filter base and will lead to fuel leakage.Do not allow dirt to enter the fuel system. Thoroughly clean the area around any fuel system component that will be disconnected. Fit a suitable cover over any disconnected fuel system component in order to protect it from dirt and debris.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g02840896
(1) Switch for the Electric Fuel Priming PumpNote: The engine start switch must be in the OFF position in order to prime the fuel system.
Hold switch (1) upward in order to activate the electric fuel priming pump. The priming pump will fill the engine fuel lines and the fuel filters with fuel.
As the air is purged from the fuel system, fuel pressure will increase. Listen for the electric fuel priming pump to come under load. Do not continue priming the fuel system after the priming pump is under load. Do not operate the priming pump for more than 2 minutes.
Crank the engine promptly after pressurizing the fuel system. The engine should start within 15 seconds.
Do not crank the engine continuously for more than 30 seconds. Allow the starting motor to cool for two minutes before cranking the engine again.
If the engine will not start, allow the starter motor 2 minutes to cool. Repeat Step 1 through Step 3.
If the engine starts, but runs rough, or once started continues to misfire or smoke, further priming is necessary. Continue to run the engine at low idle until fuel flows free without pockets of air in the fuel lines and the engine runs smoothly.