ENGINE OIL GRADE
SAMPLE AND ANALYSIS
(1) Take engine oil sample from engine oil
(2) Have engine oil sample analyzed.
(a) If engine oil sample is of correct
grade, go to Step 5 of this fault.
(b) If engine oil sample is of incorrect
grade, replace the current oil with
oil of correct grade (Para 4-2).
ENGINE OIL PRESSURE SWITCH
(1) Remove plug from oil filter base and
install STE/ICE pressure transducer.
(2) Perform STE/ICE Test #50
(3) Read output pressure on test device.
(a) If engine oil pressure is within 30 to
90 PSI, refer to Electrical System
Troubleshooting Fault 39, Oil
pressure gage does not operate.
(b) If engine oil pressure is not within
30 to 90 PSI, shut down engine
(TM 10-3930-673-10). Notify Direct
Support about this fault.