TM  10-3930-638-24&P 2-56.   HYDRAULIC   LIFT   SYSTEM   MAINTENANCE   (cont) f. Hoses, Lines and Fittings (cont). (1) Hydraulic  Oil  Filter  Assembly  to  Control  Valve  to  Mast  Assembly  (cont). STEP LOCATION ITEM ACTION REMARKS BLEEDING AIR FROM LIFT CYLINDER ASSEMBLY (cont) When performing following step, don’t look directly clown at bleed fitting; hydraulic oil is under pressure and may cause serious injury. g. Mount carriage assembly and slowly open bleed fitting located at top of lift cylinder assembly to bleed air; when carriage  assembly  almost  touches  ground,  close  bleed  fitting h. Repeat steps e, f, and g, until all air is expelled from lift cylinder  assembly CHANGE 2 2-429