VALVE GP-MAIN CONTROL 4636333 - 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.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. 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 Tools and Shop Products Guide"for tools and supplies to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations.
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The fuel filter is located inside the access doors on the front of the engine compartment. Open the access doors.
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Extend the drain hose (1) into a suitable container. The drain (2) is located under the primary fuel filter/water separator.
Open the drain. Allow the fluid to drain into the container.
After the separator is completely drained, close the drain by hand pressure only. Dispose of the drained fluid in a safe place.
Close the access doors.