TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
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TM 9-2320-280-20-1 Description: FUEL SUPPLY PRESSURE (psi) TEST # 24 This procedure measures the return pressure, in order to detect line blockage, leaks or insuf- ficient restrictor back pressure. Test requires DCA hookup only. Typical Applications: Fuel Supply Pressure Test Procedure: 1. Turn off vehicle. 2. Set TEST SELECT switch to 24. 3. Press and hold TEST button until CAL appears on display. 4. Release TEST button and wait for offset value to appear on display. If offset is within -15 to 15 proceed. If not, go to DCA Troubleshooting Procedure 5. Press and release TEST button. 6. Start engine 7. Observe displayed value. Pre-Test Procedure-. Run Confidence Test. Wait for 1 minute after turning engine off to run this test. Control Functions: 01,02,03,04,06 Possible Error Messages: E005 offset not performed. 2-738