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ARMY TM 9-2815-256-24 AIR FORCE TO 38G1-96-2 MARINE CORPS TM 2815-24/5P Table 3-2.  Troubleshooting - Continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 9.  LOW OIL PRESSURE. Step 1. Check for improper grade of oil. a. Refer to end item Lubrication Order.  If proper grade of oil, do step 2. b. If improper grade of oil, refer to paragraph 3-16.  and change oil and filter. Step 2. Check for engine running hot. a. Refer to Malfunction 7. b. If engine not overheating, do step 3. Step 3. Check for defective regulating valve. a. Inspect oil pressure regulating valve.  Refer to paragraph 3-17.2.  If setting is normal, do step 4. b. Replace defective regulating valve.  Refer to paragraph 3-17. Step 4. Check for clogged oil pump strainer. Remove and clean strainer.  Refer to paragraph 3-21.2.  If not clogged, do step 5. Step 5. Check for defective oil pump. a. Remove  and  inspect  oil  pump  for  defective  parts.    Refer  to  paragraph  3-21.1.  and  3-21.2.    If  not defective, do step 6. b. Replace oil pump.  Refer to paragraph 3-21. Step 6.  Check for worn rocker arm bushings. a. Replace rocker arm bushings.  Refer to paragraph 3-33. b. Remove  and  inspect  rocker  arm  bushings.    Refer  to  paragraphs  3-33.1.  and  3-33.3.  If  not  worn, replace engine. 3-8


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