SUPPORT (R.H.) 4L6257 - Caterpillar

Personal injury or death can result if spilled fuel ignites. Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire.To help prevent possible injury, turn the battery disconnect switch to the OFF position when changing fuel filters or water separator elements. Clean up fuel spills immediately.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Do not fill fuel filters with fuel before installing them. The fuel will not be filtered and could be contaminated. Contaminated fuel will cause accelerated wear to fuel system parts. The fuel system should be primed prior to starting the engine.
Illustration 1 g02793000
View of the back side of the fuel tank.
Park the machine on a level surface and engage the parking brake.
Stop the engine and close fuel shutoff valve (1).
Loosen bolt (2) on top of the filter base.
Remove filter housing (3) and the filter screen.
Wash the filter housing and the filter screen in clean, nonflammable solvent.
If the filter base gasket is damaged, replace the filter base gasket.
Install the filter screen and the filter housing.
Open the fuel shutoff valve.
Prime the fuel system. For information on priming the fuel system, refer to the Operation and Maintenance Manual, "Fuel System - Prime".
Start the engine and inspect the filter for leaks. Make any necessary repairs. If the engine has a loss of power or the exhaust smoke is still black, replace the secondary filters.