PAD AS 1704419 - Caterpillar

The Secondary Fuel Filter Has Been Replaced
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.
Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately.
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 disconnected fuel system component.
Note: Refer to Operation and Maintenance Manual, "Fuel System Secondary Filter - Replace" for information on replacing the filter.
Turn the ignition switch to the "OFF" position.
Illustration 1 g00975199
(1) Fuel priming pump
(2) Air purge screw
(3) Priming valve (If Equipped)
Turn the priming valve (3) (If Equipped) to the "Closed (Prime)" position in order to prime the fuel system.
Open air purge screw (2) for the fuel filter by three full turns. Do not remove the air purge screw.
Do not crank the engine continuously for more than 30 seconds. Allow the starting motor