TM  9-2330-390-14&P Table  4-1.  Unit  Preventive  Maintenance  Checks  and  Services  (PMCS)  (Con't). Location Item  To Item Check/ Not  Fully  Mission No. Interval Service Procedure Capable  If: 6 Semiannually   Steering a. Check for damage to steering   a.  Steering  knuckle  assembly  is Knuckle knuckle  assembly.  Replace  if damaged. Assembly damaged  (see  paragraph  4-54). (Front Dolly) b. Lubricate steering knuckle assem- bly  (see  Lubrication  Instructions, Chapter 3, Section I). 7 Semiannually   Steering a. Check for cracks, breaks, or bends   a. Steering link is damaged or is not Link   (Front in  steering  link.  Check  for  security secure. Dolly) of mounting. Replace if damaged (see  paragraph  4-78). b. Lubricate steering link (see Lubri- cation  Instructions,  Chapter  3, Section  I). 8 Semiannually   Front Drawbar (Front Dolly) a.  Check  for  cracks,  breaks,  bad a. Front drawbar is damaged or is not welds,  or  bends  in  front  drawbar. secure. Check all components installed on front drawbar for security of mount- ing. b.  Lubricate  front  drawbar  (see  Lubri- cation  Instructions,  Chapter  3, Section I). 9 Semiannually    Caster a. Lubricate caster wheel assembly Wheel (see   Lubrication   Instructions, Assembly Chapter 3, Section I). b.  Check  caster  wheel  assembly  tire for inflation of 95 psi (666 kPa). 10 Semiannually  Tire  and a.  Check  for  abnormal,  uneven,  or Wheel other   damage   to   tires   (see Assemblies TM  9-2610-  200-14).  Check  tires for proper inflation (see para- graph 1-15). b. Check lug nuts for looseness. Tighten  to  specified  torque  (see paragraph  4-76). 11 Semiannually  Pivoting Lubricate pivoting tray bearings (see Tray Lubrication  Instructions,  Chapter  3, Section I). 4-21