TM 5-2420-230-24-1
Table 3-6. Unit Troubleshooting Table. -- Continued
Malfunction
Test or Inspection
Corrective Action
7.
HIGH OR LOW OIL PRESSURE.
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical circuits, a
direct short may result. Damage to equipment and injury or death to personnel may occur.
Step 1.
Check ENGINE OIL PRESSURE gauge (1) and oil pressure sensor (2) to ensure both are functioning
correctly.
Remove wire at sending unit and ground to vehicle chassis. Have an assistant watch gauge to identify
its movement. If no movement is noticed, check continuity of wire. Replace wire as necessary
If wire has continuity, replace gauge (Para 12-23).
Step 2.
Check oil pressure regulating valve for correct reading of 30-90 psi (207-621 kPa) at 900 RPM. Clean
valve (Para L-36).
If oil pressure regulating valve is not functioning correctly, replace oil pressure regulating valve
(Para L-36).
If fault continues, notify Direct Support maintenance (Appendix L).
Change 1
