GLASS 2500776 - Caterpillar

Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. Clean up fuel spills immediately.
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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Prime the fuel system in order to fill the fuel filter with fuel. It is necessary to prime the fuel system after the fuel filters have been changed.Park the machine on a level surface and engage the parking brake. Lower the truck body or OEM attachment and stop the engine.Raise the hood. Refer to Operation and Maintenance Manual, "Hood Control".Type 1
Illustration 1 g01435846
Open purge screw (2) .
Turn the priming pump plunger (1) counterclockwise in order to unlock the plunger. Manually pump the plunger. This will fill the engine fuel lines and the fuel filters with fuel.
Operate the priming pump until the flow of fuel is free of air bubbles.
Close the purge screw.
Continue to operate the priming pump in order to build fuel pressure. This will create resistance in the plunger. Operate the priming pump until resistance is felt.Note: Resistance will not be felt until the purge screw has been tightened.
Push in the plunger. Turn the plunger clockwise in order to lock the plunger.
Start the engine. If the engine starts but the engine runs rough, continue to run the engine at low idle until the engine runs smoothly. If the engine will not start after several attempts, consult your Caterpillar dealer.Type 2
Illustration 2 g01435860
Note: The engine start switch must be in the OFF position in order to prime the fuel system.
Open purge screw (4) .
Hold switch (3) upward in order to operate the electric fuel priming pump. This will fill the engine fuel lines and the fuel filters with fuel.
Operate the priming pump until the flow of fuel is free of air bubbles. Do not operate the pump for more than two minutes.
Close the purge screw.
Continue to operate the priming pump in order to build fuel pressure. As the fuel pressure increases, the priming pump will come under load. Listen for the priming pump to come under load. Do not continue priming the fuel system after the priming pump is under load. Do not operate the pump for more than two minutes.Note: The priming pump will not come under load until the purge screw has been tightened.
Start the engine. If the engine starts but the engine runs rough, continue to run the engine at low idle until the engine runs smoothly. If the engine will not start after several attempts, consult your Caterpillar dealer.