STEM ASSEM. 7S0574 - Caterpillar

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.
The fuel system should be primed after a unit injector is changed or when the fuel system is dry.Note: The fuel system does not need primed when the primary fuel filters or secondary fuel filters are changed. When the engine is started under these circumstances, the engine may momentarily run rough until the air is purged from the system.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over any disconnected fuel system components.
Illustration 1 g06306645
The right side view of a typical C32 Engine that is configured for a genset
(1) Electric fuel priming pump/fuel filter base
(2) Secondary fuel filter
Illustration 2 g06306650
The secondary fuel filter and the fuel priming pump are shown.
(1) Electric fuel priming pump/fuel filter base
(2) Secondary fuel filterFollow the procedure below to prime the engine with fuel.
Start the engine at low idle.
If the engine runs rough, continue to run the engine at low idle until the engine runs smoothly.Note: More than 1 priming cycle may be required.
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.
The fuel priming pump can manually prime from the electronic modular control panel (EMCP) after filter changes.