TM 10-5410-221-10 CHAPTER 3 OPERATOR’S MAINTENANCE INSTRUCTIONS Section I.  OPERATOR’S TOOLS AND EQUIPMENT 3-1.  Tools and Equipment No special tools or equipment are required by operator/crew personnel for maintenance of the expandable shelter. Section II.  LUBRICATION 3-2.  Lubrication Lubrication of the expandable shelter shall consist of lubrication of zipper with zipper ease. Section III.  PREVENTIVE MAINTENANCE CHECKS AND SERVICES 3-3.  General To ensure that the expandable shelter is ready for use at all   times,   it   must   be   inspected   systematically   so   that defects  may  be  discovered  and  corrected  before   they result  in  serious  damage  or  failed  before  they  result  in serious damage or failure. The  necessary  preventive  maintenance  services  graphs 3-4 and 3-5.  The item numbers indicate the sequence of minimum  inspection  requirements.    Defects  discovered during    use    of    the    shelter    will    be    noted    for    future correction,  to  be  made  as  soon  as  use  is  discontinued. Stop use immediately if a deficiency is noted which would damage     the     shelter     if     use     were     continued.          All deficiencies  and  shortcomings  will  be  recorded  together with the corrective action taken, on DA Form 2404 at the earliest possible opportunity. 3-4.  Daily Preventive Maintenance Services Daily  preventive  maintenance  and  services  which  must be performed by operator/crew are contained in table 3- 1.      The   item   numbers   are   listed   consecutively   and indicate the sequence of minimum inspection requirements.  Refer to table 3-1 for the daily preventive maintenance services. 3-5.  Weekly Preventive Maintenance Services Weekly preventive maintenance and services which must be performed by operator/crew are contained in table 3- 1.      The   item   numbers   are   listed   consecutively   and indicate the sequence of minimum inspection requirements.        Refer    to    table    3-1    for    the    weekly preventive maintenance services. Table 3-1.  Preventive Maintenance Checks and Services Interval B - Before Operation A - After Operation M - Monthly Operator Org D - During Operation W - Weekly Q - Quarterly Daily Item to be Inspected Procedure Reference W M Q B D A 1 X X X X GUY ROPES AND CABLE Check for even tension and for fraying ASSEMBLIES or breaks.  Tighten or replace guy ropes or cable assemblies as required. 2 X X X X TENT PINS AND GROUND Check    for    secure installation reinstall pin ANCHORS or anchors as required. 3 X X X CONDITIONED AIR DUCTS    Check air ducts for secure attachment and for holes, tears or other damage . 4 X X X ELECTRICAL CONNECTIONS Check for secure installation of electrical connections. 3-1