COVER 2133443 - Caterpillar

Hand Fuel Priming
The priming pump is located on the chassis on the right side of the engine under the hood. Use the following procedures in order to remove air from the fuel system.
Ensure that the fuel system is in working order.
Check that the fuel supply valve (if equipped) is in the ON position.
Illustration 1 g02143359
Operate the fuel priming pump (1). Count the number of operations of the fuel priming pump. After 100 depressions of the fuel priming pump, stop.
The engine fuel system should now be primed and the engine should now be able to start.
Operate the engine starter and crank the engine. Immediately after air has been removed from the fuel system, start the engine and operate at low idle for a minimum of 5 minutes. Note: Operating the engine for this period will help ensure that the fuel system is free of air.Note: Do not loosen the high pressure fuel line in order to purge air from the fuel system. This procedure is not required.
Contact with high pressure fuel may cause fluid penetration and burn hazards. High pressure fuel spray may cause a fire hazard. Failure to follow these inspection, maintenance and service instructions may cause personal injury or death.
Purge the line before any service or repair is performed on the engine fuel lines. After the engine has stopped, wait for 60 seconds in order to allow the fuel pressure to be purged from the high pressure fuel lines. If necessary, perform minor adjustments. Repair any leaks from the low-pressure fuel system and from the cooling, lubrication, or air systems. Replace any high pressure fuel line that has leaked.Reference: See Disassembly and Assembly, "Fuel Injection Lines - Install" for more information.If you inspect the engine in operation, always use the proper inspection procedure in order to avoid a hazard of penetration from the fluid.Reference: See Operation and Maintenance Manual, "General Hazard Information" for more information.