HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND 12-16. Fork  Position  Cylinders  (S/N INSTALLATION  (cont) TM 10-3930-643-34 MAINTENANCE.  (cont) 2001 and above). (Sheet 10 of 10) 54. Connect tube assemblies (2 and 1) to tee fitting and to elbows (4 and 3). 55. Check hydraulic fluid level. Add hydraulic  fluid  if  necessary,  refer to LO 10-3910-643-12. TESTING 56. 57. 58. 59. 60. 61. 62. Only a qualified operator perform the next procedure. other  personnel  must clear immediate area. Failure to may All the follow this  procedure  could result in SERIOUS  INJURY  or  DEATH.  If injured, obtain medical aid immediately. Start engine. Operate fork position cylinder slowly. Move fork position cylinder through at least five full movements of travel to bleed air from system. Check for binding in operation of hydraulic  cylinders  and  vehicle. Stop engine. Inspect hydraulic fluid tubes, fittings  and  cylinder  assemblies  for leaks. Check hydraulic fluid level again. Add hydraulic fluid, if necessary, refer to LO 10-3930-643-12. NOTE Return  M10A  Forklift equipment  condition. to  original END OF TASK 12-151