TM 10-8415-206-12&P 2-2.  PREVENTIVE MAINTENANCE CHECKS AND SERVICES-Continued Table 2-1.  Operator's Preventive Maintenance Checks and Services NOTE Within    designated    intervals,    these    checks    are    to    be performed in the order listed. The item number column shall be used as a source of item numbers  for  the  "TM  Number"  column  on  DA  Form  2404, Equipment   Inspection   and   Maintenance   Worksheet.      in recording results of PMCS. LEGEND B - Before A - After D - During W - Weekly PROCEDURES Interval Equipment will be Item No. B D A W Item to be inspected Check for and have repaired or adjusted as necessary: reported not ready/Available if: Upper Front 1. Visor Lock Inspect visor lock to make sure it locks   in   the   retracted   position. Report    defective    visor    lock    to Organizational Maintenance. Visor lock fails to lock visor in retracted position. 2. Visor and housing Lower   and   raise   visor   to   make sure  it  moves  freely  in  its  tracks. Report   defective   visor   or   visor tracks to Organizational Maintenance.      Inspect   visor   for dust,  grease,  and  other  defects. Clean visor, using a clean, damp cloth, to remove dust and dirt. Visor sticks or fails to move freely in tracks. NOTE Use   a   mild   soap   solution   to remove grease, oil and perspiration from visor. Change 1 2-7