TM 5-3805-261-20
SENDING UNITS AND WARNING SWITCHES TROUBLESHOOTING AND MAINTENANCE PROCEDURES.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
b.
ENGINE OIL PRESSURE SWITCH DOES NOT OPERATE.
Step 1. Check oil level in engine (Figure 7-136).
Figure 7-136
Step 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 7-137
Step 2.
Start engine and run for several minutes. Check temperature on temperature gages.
7-217
