TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 249 of 1205
TM 9-2320-387-24-l REFERENCE INFORMATION ENGINE LUBRICATION Incorrect oil level and type can cause pressure problems, leaks, excessive blowby. and other problems. Inspect the oil cooler, oil cooler supply return lines, CDR valve hoses, oil pan, and oil filter. Test CDR valve (para. 3-9). See the location on parts page to find these parts. ENGINE RPM STMCE-R TEST 10 1. Start Test 10, Engine RPM. 2. Crank or start the engine. Displayed reading is mm. Cranking rpm should be approximately 200. Idle rpm should be 700-750. Remove sending unit (para. 4-29). ENGINE RPM INTERLEAVE WITH O-l,000 PSI PRESSURE I. Connect BLUE transducer in place of oil pressure sending unit. Dial test 50 (O-l ,000 psi (O-5.995 kPa)). Perform offset test. 2. Dial test 01, interleave with RPM. Dial test 50. 3. Stan engine and observe display. VIM will display RPM, then PSI. OIL PRESSURE GAUGE OIL PRESSURE SENDING UNlT 2-193