TM  10-3930-643-34 TRANSMISSION  TROUBLESHOOTING  AND  MAINTENANCE. 6-1. Torque  Converter  Troubleshooting. MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION a. HIGH  TORQUE  CONVERTER  OIL  TEMPERATURE. Step 1. Transmission sump oil level too high or too low. Add or drain to proper level, refer to LO 10-3930-643-12. If oil level is correct, proceed to Step 2. Step 2. Check for foam in oil. If there is evidence of foam, check for leaks in torque converter lines, refer to paragraph 6-5. If there is no leakage in lines, proceed to Step 3. Step 3. Test  for  torque  converter  pressure. If If Step 4 pressure is low, torque  converter check pump for wear. pressure is accurate, proceed to Step 4. . Check for low oil flow through torque converter. Replace  torque  converter  charging  pump,  refer  to  paragraph  6-4. Step 5. Check regulating valve for operation. If not operating properly, refer to paragraph 4-10. Step 6. Check  for  clogged  transmission  oil  cooler. Remove and clean, refer to paragraph 6-9. 6-2