SYMPTOM  INDEX  (continued) 46.  PLGR  does  not  operate 3-18.1 Change   1 3  -  3 45.  MWRH  does  not  operate PLGR 43. Extinguisher cylinders are empty or damaged or have low pressure 44. Bottle discharges when vehicle sits idle, or when vehicle is in motion MWRH CONVEYOR 28. Conveyor chain will not move 29. Conveyor chain moves slowly or erratically PROJECTILE  RACKS 30. Projectile does not go into tube 31. Projectile is not held immobile in tube 32. Projectile  will  not  come  out  of  tube VENTILATED  FACE  PIECE  SYSTEM  (VFPS) 33. Airflow to ventilated face piece is lacking or reduced 34. Heat does not reach ventilated face piece, but airflow is normal 35. Precleaner does not operate when switch is on UPPER  REAR  DOOR  (BALLISTIC  SHIELD) 36. Upper rear door does not operate when switch is engaged 37. Upper rear door cylinder operation is slow or erratic 38. Upper  rear  door  drifts  closed AUTOMATIC  FIRE  EXTINGUISHING  SYSTEM  (AFES) 39. Lamp does not light during lamp test or fails during operation 40.    Fault  lamp  lights 41.    Crew AFES T/A panel fire detection LEDs light but no fire 42. AFES or component is damaged or fails during operation HYDRAULIC   SYSTEM 26.  No  response  to  any  control 27. Slow operation BILGE  PUMP 18. Bilge pump does not operate AUXILIARY  POWER  UNIT  (APU)  ENGINE 19.   APU  engine  does  not  start 20.   APU engine starts, then stalls or runs roughly 21.   APU engine is difficult to start 22.  APU engine is hard to start in cold weather 23. APU engine overheats 24. APU engine misfires 25. APU engine lacks power 3-18.1 3-18 3-18 3-17 3-18 3-18 3-18 3-17 3-17 3-17 3-15 3-16 3-16 3-14 3-15 3-15 3-13 3-14 3-12 3-13 3-10 3-11 3-11 3-11 3-12 3-12 3-12 Troubleshooting Procedure: Page 3-10 TM  9-2350-287-10