TM   5-4220-231-14&P Table    2-1.     Operator Preventive Maintenance Checks and    Service For    Diving   Operations -  (Con't). B-Before D-During A-After W-Weekly ITEM INTERVAL ITEM   TO    BE   INSPECTED. Equipment I NO Not    Ready/ D  A W PROCEDURE Available If: 22 0 Interconnecting hoses and    connectors (22). a)     Inspect each hose     for  coupling pullout. b)     Ensure each hose     has    a   current clean     and Out   of  date. hydrostatic test    date. 0 0 0 Inspect each hose     for   blisters, cuts,     abrasions, Any   damage cracks, or  other     damage. Replace if damaged is  detected. only    if replacement during operation does not impact the    operation. 0 0 Inspect each     connector for  dents, chips, gouges, Damage scratches, or  other    visible     damage. prevents hose from    proper seating, or has loose seal. 0 0 Ensure protective caps are secured to   back panel Protective assembly with    retaining cable and set screws. caps are Replace as    required. missing. 0 Ensure protective caps are secured to   hose connectors. Replace as    required. 23 0 0 Piping (23). Inspect piping on   back of   DASS Damage pre- panels for   bent, dented, or   damaged pipes. vents normal Check for   loose connections. Tighten as operation or required. has contami- nated system. 24 0 0 Frame Assembly (24). Inspect frame for cracked, deteriorated, or   damaged weld    joints, dents, breaks, or   other damage. 0 0 Ensure lift  rings are secured to   frame. Replace or tighten as    required. 0 0 Inspect five   rubber support feet    for   damage. Replace if  missing or   damaged. 0 0 Inspect rubber flask seating blocks for Blocks are deterioration or   damage. Replace as    needed. missing. 0 0 Inspect flask    straps to   ensure flasks are secure. Tighten as    needed. Ensure cotter pins are in place. Replace as    required. 2-28