TM  10-3930-638-24&P 3-30.   HYDRAULIC   LIFT   SYSTEM   MAINTENANCE   (cont) d. Rotation Cylinder Assembly (cont). STEP LOCATION ITEM ACTION REMARKS 21 Steering  cylin- a. Rod end port Check for hydrau- Slight weepage of oil is permissible; if der assembly lic oil leakage leakage is too great, disassemble cylinder and check piston assembly (12) for damage b. Rod end packing Check for hydrau- If leakage is observed, disassemble cylinder lic oil leakage and  check  gland  assembly  (17)  for  damage 22 Test  hydraulic Shut  pump  down pump 23 Steering  cylin- a.  Cylinder  port  (port Disconnect hy- Push rod into cylinder der assembly opposite  rod  end) draulic hose and drain oil from cylinder b. Both cylinder ports Cap Prevents intrusion of dirt INSTALLATION/REPLACEMENT 24 Mast  assem- a.  Rotation  cylinder Position on bly, rear assembly (8) carriage  mount- ing pins b. Two spacers (7) Install and retaining rings (6) c. Two 90 degree Install fittings (5) d. 45 degree fitting Install (4) e. 90 degree elbow Install (3) f. Hose fitting (1 Remove caps, and  2) connect and tighten 25 Operator’s Perform  paragraph compartment 2-56f(2),  step  12 26 Rotation Two lubrication Lubricate Refer to current lubrication order cylinder fittings 3-238