SEAL-LIP TYPE 3025729 - 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.
Stop the engine. Ensure that the engine will not start during this procedure.
Shut off the fuel supply valve to the engine.
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.
Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately.
Illustration 1 g00736845
(1) Filter case
(2) Nut
Loosen nut (2). Hold filter case (1) and remove nut (2). Prepare to catch the fuel that is inside of the filter case with a suitable container. Remove the filter case from the mounting bolt.
Remove the element and wash the element in clean, nonflammable solvent. Allow the element to dry. Inspect the element. Install a new element if the old element is damaged or deteriorated.
Clean the inside of the filter case. Allow the filter case to dry.
Inspect the O-ring seals. Obtain new seal rings if the old seal rings are damaged or deteriorated. Ensure that the sealing surfaces for the seals are clean. Install the seals.
Do not fill the fuel filters with fuel before installing them. The fuel would not be filtered and could be contaminated. Contaminated fuel will cause accelerated wear to fuel system parts.
Place the element in the filter case. Slide the filter case over the mounting bolt.
Install the nut.
Open the fuel supply valve.
Prime the fuel system. See this Operation and Maintenance Manual, "Fuel System - Prime" topic.