TM 5-4220-231-14&P Table   2-2. Operator Preventive Maintenance Checks and    Services For  Chamber Operations -  (Con't). B-Before D-During A-After W-Weekly ITEM INTERVAL ITEM   TO   BE   INSPECTED. Equipment is NO Not   Ready/ B D A W PROCEDURE Available If: 6 0 Bleed valve (6). Open bleed valve    to   release Valve pressure from    system by   turning counterclockwise operation is 1/4   turn. Close valve    by   turning clockwise 1/4 jammed, turn. Replace handle if broken. broken, excessively tight, or loose. 7 0 0 Piping (7). Inspect piping on   back of  Chamber Damage Reducing Station Panel for   bent, dented, or prevents damaged pipes. Check for   loose fittings. Tighten normal as    required. operation or has contami- nated system. 8 0 0 Frame Assembly (8). Inspect frame for  cracked, deteriorated, or   damaged weld    joints, dents, breaks, or   other damage. Inspect carrying handles for   damage. 9 0 Interconnecting hoses and connectors (9). 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 b)   Ensure each hose has a   current clean and Out    of   date hydrostatic test date. 0 0 0 Inspect each hose for   blisters, cuts, abrasions, Damage cracks, or   other damage. Replace if damaged prevents hose (only    if replacement during operation does not from    proper impact operation). seating or has lost    seal. 0 0 Inspect each connector for   dents, chips, gouges, scratches, or   other visible damage. 0 0 Ensure protective caps are    secured to   back panel Protective with    retaining cable and set    screws, Replace as caps are required. missing. 0 0 Ensure protective caps are secured to   hose connectors. Replace as    required. 2-32