PIN 3100851 - Caterpillar

Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire.
Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately.
Primary Filter
Illustration 1 g00477706
(1) Filter
(2) Filter
(3) Lock
(4) Lever
(5) Drain valve
To drain filter (1), lift lock (3) and turn lever (4) to the "FILTER 2 RUN" position. Release the lock.
Hold a suitable container under drain valve (5). Open the drain valve. Allow the moisture to drain. Close the drain valve.
Lift lock (3) and move lever (4) to the "BOTH RUN" position for one minute.
To drain filter (2), lift lock (3) and turn lever (4) to the "FILTER 1 RUN" position. Release the lock.
Repeat Steps 2 and 3 for filter (2). Water Separator
For specific instructions on draining the water separator, see the service information that is provided by the OEM of the water separator.
The water separator is under suction during normal engine operation. Ensure that the drain valve is tightened securely to help prevent air from entering the fuel system.