TM  10-3930-638-24&P 3-30.   HYDRAULIC   LIFT   SYSTEM   MAINTENANCE   (cont) b. Tilt Cylinder Assemblies. This task covers: a.  Removal d. b.  Disassembly e. f. c.  Cleaning INITIAL   SETUP TOOLS No. 1 Common Organiza- tional  Maintenance  Tool  Kit Chain Hoist, 1/2 ton capacity Sleeve,  1-1/2  inches  diameter Sleeve,  1-9/16  inches  diameter MATERIALS/PARTS Cleaning  solvent  P-D-680 Clean  cloths Seal repair kit Clean hydraulic oil (refer to current lubrication order) Medium  grit  emery  cloth Inspection/Repair Reassembly Installation/Replacement EQUIPMENT   CONDITION NSN  4910-00-7544654 Paragraph Condition Description Vehicle  parked  on  level  surface,  engine off,  parking  brake  applied,  mast  vertical and  forks  lowered  and  resting  on  ground. Control  valve  control  levers  operated several times to relieve hydraulic pres- sure. WARNING If both tilt cylinder assemblies are to be removed, support mast assembly using chain hoist attached to top of mast assembly. Failure to do so may cause mast assembly to fall forward, striking personnel standing/working in front of unit, This could cause serious injury or death. 3-218