TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 FUEL/WATER SEPARATOR OPERATION TESTS 0042 00 WP 0042 00-6 TESTS (Continued) 2. Test automatic drain valve (13) operation (continued): WARNING Do not allow upper and lower sensor probes to come in contact with each other or with metal container. Do not touch probes. Failure to comply may result in electrical shock, inaccurate test results, or damage to equipment. a. Hold tips of upper and lower sensor probes (14 and 15) in water. b. Listen for solenoid drain valve (13) to click and fuel to drain from tube (18). (1) If click is heard and fuel drains, go to step 3. (2) If fuel fails to drain and click is heard, check solenoid drain valve (13) and lines for obstructions "Fuel/Water Separator Replacement," WP 0084. (3) If fuel fails to drain and click is not heard: (a) Disconnect harness (25) from solenoid drain valve (13). (b) Place positive lead of multimeter in socket A of harness (25) and negative lead to ground. Hold sensor probes (14 and 15) in water in suitable container. Check for voltage, and then remove sensor probes from water. (c) If 24 V dc is present, replace solenoid drain valve (13) (WP 0084). If 24 V dc is not present, replace fuel/water separator control box (20) (WP 0084). 20 13 18 25 14 15