SWITCH 0773538 - Caterpillar

8N940 Water Separator.Adaptable As: The 8N940 Water Separator (see the Illustration) is adaptable to all Caterpillar Engines. The charts that follows shows the replacement parts. INSTALLATION: The 8N940 Water Separator must be installed on the inlet side of the fuel transfer pump and in series with the existing fuel filter. If possible, install the water separator in front of the fuel filter.
1-1/2" (38.1 mm) of clearance is needed to change elements.Install a vent tube to the outlet valve on top of the base assembly. Use a .25" (6 mm) O.D. nylon 5P6011 Tubing or .19" (5 mm) I.D. vinyl 5P5999 Tubing.
MAINTENANCE: Drain the water and solid contaminants from the reservoir of the water separator each day before engine start-up. The procedure to drain the water from the water separator is as follows:
1. Remove the cap from the vent valve and open the vent valve.2. Open the small valve at the bottom of the reservoir.3. Drain until fuel comes out.4. Close valve to the reservoir.5. Close vent valve and install cap.When the fuel pressure gauge reads "OUT", remove and install a new water separator element; if the fuel pressure gauge still reads "OUT" change the main fuel filter.