GASKET 8L4156 - 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.
Note: Refer to Systems Operation, Testing and Adjusting, "Cleanliness of Fuel System Components" for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel system.
Ensure that the engine is stopped before any servicing or repair is performed.
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.
The low-pressure fuel system can be pressurized for a time period after the engine has stopped operating. The operating pressure of the low-pressure fuel system can be 500 kPa (73 psi).
Note: Both fuel filter elements must be replaced.Remove the Element
Ensure that the fuel supply valve (if equipped) is in the OFF position. Place a suitable container under the fuel filters in order to catch any fuel that might spill. Clean up any spilled fuel.
Illustration 1 g03353094
Typical example
Install a suitable tube onto connection (4). Rotate the drain valve (3) counterclockwise. Two full turns are required.
Allow the fuel to drain into the container and remove the tube.
Remove the filter bowl (2) from filter body (1). Rotate the filter bowl counterclockwise in order to remove the assembly.
Illustration 2 g03353105
Typical example
Rotate the filter element (5) counterclockwise and remove the filter element. Clean the filter bowl. Install the Element
Illustration 3 g03353115
Typical example
Locate the thread (7) in the filter element onto the threads (6). Spin on the new filter element and tighten the drain valve (3) by hand.
Lubricate the seal on the filter element (5) with clean engine oil. Do NOT fill the filter bowl (2) with fuel before the filter assembly is installed.
Do not use a tool in order to install the filter assembly. Tighten the assembly by hand. Install the filter bowl (2). Turn the filter bowl clockwise until the filter bowl locks into position against the stops.
Filter assembly (A) is now complete. Perform the same procedure on filter assembly (B).
When both filter elements have been replaced with new filter elements the fuel system can be primed, if the primary filter has also been renewed. If necessary, turn the fuel supply valve to the ON position.
Prime the fuel system. Refer to the Operation and Maintenance Manual, "Fuel System - Prime" for more information.