TM  5-5420-209-12 Table  4-1.  Unit  Preventive  Maintenance  Checks  and  Services  (PMCS)  for  the  Transporter  cont. Location Item Interval   ‘ Item to Item To Be Inspected Equiment Is Not Service/Check Procedure Ready/Available If 28 Monthly Light, Marker Ensure both red clearance light and blackout and  Reflector marker are functional. Ensure red reflector is serviceable. Check lenses and housings for crocks. Check wire harness for loose/bare wiring and connector  integrity. 29 Monthly Bogie  Lock  and Ensure rubber bumper and bracket are secure Bracket to walkway stud with washer and wingnut. Check rubber bumper and metal bracket for cracks, deformation, and dry rot. 30 Monthly    Walkway Ensure walkway is mounted securely to center Defect   presents support. personnel  or  equipment hazard. Check walkway treadplate for cracks, holes, broken  welds,  jagged  protrusions. Check  condition  of  non-skid  surface. 31 Monthly    Bay  Roller Ensure roller rotates freely. Assembly Check roller for gouges, nicks, and cuts to Roller  damages  bay. surface  area. Ensure grease fitting is serviceable. Check axle, bearing and thrust washer serviceability. 32 Monthly    Walkway Ensure walkway is mounted securely to front Defect   presents (Front) support. personnel  or  equipment hazard. Check walkway treadplate for cracks, holes, broken  welds,  and  jagged  protrusions. 33 Monthly    Light, Marker Ensure both amber clearance light and and  Reflector blackout  marker  are  functional. Ensure  amber  reflector  is  serviceable. Check  lenses  and  housings  for  cracks. Check wire harness for loose/bare wiring and connector  integrity. NOTE Bracket  welds  at  top  and  base must  be  carefully  inspected.  If in  doubt,  notify  unit  mainte- nance. No. 4-9