TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 192 of 890
TM 9-2320-280-20-1 REFERENCE INFORMATION If no fuel arrives when cranking engine, the diaphragm in the Iift pump may be ruptured, allowing the fuel to drain back into the tank. There may be some water or dirt trapped in the filter already that didn't come from the fuel that is in the tank now. Open the filter drain valve and sank the engine for approximately 5 seconds to purge the filter, then take a fuel sample in a clear container. Inspect the sample for water and dirt. Replace fuel fitter, refer to (para 3-33). 2-105