Tier II

Tier III

3. Loosen the valve and drain the water and sediment into a suitable container. 4. Tighten the valve.

Fuel System Water Separator Element - Replace (Tier II)

Personal injury or death could result from failure to adhere to the following procedures. Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. Clean up all leaked or spilled fuel. Do not smoke while working on the fuel system. Turn the disconnect switch OFF or disconnect the battery when changing fuel filters.

NOTICE 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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

1. Park the machine on level ground. Fully retract and fully lower the boom. Move the transmission control to the NEUTRAL position and ensure that the parking brake is engaged. Shut off the engine. 2. Open the engine enclosure.

Illustration 251 g00976197 3. Loosen valve (3) and drain the contents of housing (2) into a suitable container. Tighten the valve. 4. Support housing (2) and rotate the housing.

Remove the housing. 5. Rotate the element for 90 degrees counterclockwise and lift the element out of housing (2). 6. Clean the gasket sealing surface on mounting base (1). Replace the O-ring seal that is located on housing (2). Insert a new filter element into the housing and rotate the element for 90 degrees clockwise in order to lock the element into position. 7. Lubricate the O-ring seal on the new element with clean diesel fuel. 8. Install the housing onto the mounting base.

Tighten the housing by hand. Do not overtighten the housing. Note: Ensure that the O-ring seal is not damaged during the installation of the housing. Replace the O-ring if the O-ring is damaged. 9. Prime the fuel system. Refer to Operation and

Maintenance Manual, "Fuel System - Prime" for further instructions. 10. Start the engine and check for leaks.