TM 5-3805-261-20SENDING UNITS AND WARNING SWITCHES TROUBLESHOOTING AND MAINTENANCE PROCEDURES.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONb.ENGINE OIL PRESSURE SWITCH DOES NOT OPERATE.Step 1. Check oil level in engine (Figure 7-136).Figure 7-136Step 2. Start engine and run for several minutes. Check oil pressure on oil pressure gage.If the oil pressure is within operating range--replace engine oil pressure switch. Refer to paragraph 7-92.c.COOLANT TEMPERATURE SWITCH DOES NOT OPERATE.Step 1. Check the coolant level (Figure 7-137).Figure 7-137Step 2.Start engine and run for several minutes. Check temperature on temperature gages.7-217
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