TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 248 of 1205
TM 9-2320-387-24-l ENGINE LUBRICATION L KNOWN INFO I NONE POSSIBLE PROBLEMS OIL OIL FILTER LEAKS ENGINE PROBLEMS OIL PRESSURE SENSING SYSTEM KNOWN INFO I OIL OK FILTER OK POSSIBLE PROBLEMS LEAKS ENGINE PROBLEMS 1 OIL PRESSURE SENSING SYSTEM KNOWN INFO OIL LEVEL AND TYPE OK FILTER OK NO OIL LEAKS POSSIBLE PROBLEMS OIL PRESSURE GAUGE OIL PRESSURE SENSOR ENGINE PROBLEMS IS THE CRANKCASE FILLED TO THE CORRECT LEVEL WITH OIL THAT IS CLEAN AND OF THE RIGHT TYPE, AND IS THE OIL FILTER CLEAN? DIAGNOSTIC FLOWCHART - r OPTIONS 1 CHECK DIPSTICK. SEE TABLE 2-l. (Page 2-22) FOR OIL AND FILTER CHANGE REQUIREMENTS. REASON FOR QUESTlON To make sure the engine has the right oil, and its dean. IS THE VEHICLE FREE FROM LARGE OIL LEAKS? T OPTfONS CHECK THE LIST OF D-EMS TO THE RIGHT. REASON FOR QUESllON Any large oil leaks could affect oil pressure. Small leaks should be IS THE OIL PRESSURE AT THE CORRECT VALUE? (SEE CHART AT RIGHT.) 1 TE! I ST OPTlONS 1. STEIICE-R TEST 50 (Page 2-495) INTERLEAVED WITH RPM. 2. LOOK AT THE GAUGE AND USE STEIICE-R TEST 10 (Page 2-490). REASON FOR QUESTlON Low oil pressure will cause excessive wear on the engine. High pressure could indicate clogs in the system. If you use the gauge, you can let the engine run a few minutes to make sure the gauge is OK. 4-- -