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Table 2-2.  Frequency/Channel Chart for Commercial Marine Radios in USA (continued)
Figure 2-11.  Replacement of Crimped Terminals

TM-55-1930-209-14P-12 Water Purification Barges (NSN 1930-01-234-2165) Lighting System Manual
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TM 55-1930-209-14&P-12 Section IV.  Maintenance instructions 2-15  General 2-15.1  Maintenance concept 2-15.1.1    Unit  level  and  Intermediate  Direct  Support/Intermediate  General  Support  (IDS/IGS)  maintenance  on  radio communications system equipment is performed onboard by barge crew members whenever possible. 2-15.1.2  Any  IDS/IGS  maintenance  beyond  capability  of  crew  members  is  provided  by  a  shore-based  area  support maintenance unit.  This unit also determines if depot support maintenance is required. 2-15.1.3 Intermediate support maintenance is accomplished by replacement of components or major end items. 2-15.1.4  Unless other Intermediate support procedures are directed, IDS/IGS maintenance normally is provided by an Army   Transportation   Corps   floating   craft   intermediate   support   maintenance   unit   serving   terminal   operating   area Components to be disposed of are processed by this unit. 2-15.1  5    Maintenance  Allocation  Chart  (MAC)  is  in  TM  55-1930-209-14&P-18  For  maintenance  of  other  equipment onboard, consult appropriate manual. 2-15.2      Maintenance   instructions.      Maintenance    instructions    are    presented    in    paragraphs    2-16,    Preventive maintenance checks and services, Appendix C, Troubleshooting, and 2-18, Maintenance procedures. 2-16    Preventive  maintenance  checks  and  services.    See  TM  55-1930-209-14&P-12,  Appendix  C  for  preventive maintenance   checks   and   services   for   the   communications   system.      See   TM   55-1930-209-14&P-19   for   complete preventive maintenance checks and services for all ROWPU Barge Systems. 2-17  Troubleshooting 2-17.1  Army radio.  Perform troubleshooting in TM 11-5820-401-10-1, TM 11-5820-401-20-1, and TM 11-6130-233-12 as appropriate. 2-17.2    Commercial  marine  radios.      Troubleshoot   commercial   marine   radio   as   given   in   Table   2-3.      Additional troubleshooting is in manufacturer's service manual/instructions listed in Section VI and contained in Appendix B Table 2- 3 lists only common malfunctions that may occur during operation if a malfunction occurs that is not listed and the cause is not readily apparent, request IDS/IGS maintenance assistance. 2-17.3  Walkie-talkies.  Troubleshoot walkie-talkies as given in Table 2-4. 2-18   General   maintenance.      Maintenance    for    the    system    consists    of    disassembling,    repairing/replacing,    and reassembling items listed in the Repair Parts List in TM 55-1930-209-14&P-18.  When performing maintenance, be sure to observe precautions listed in manufacturer's manuals/instructions and the following: a. Always   use   new   seals   and   gaskets,   same   as   original,   before   reassembling   components   that   have   been disassembled for repair.  Carefully install so as not to damage during assembly. b. When replacing gaskets, make sure mating surfaces are clean and free of old gasket material, adhesive, oil, or grease.  These precautions will ensure a leak-proof joint. c. When  replacing  O-rings,  make  sure  all  surfaces  are  clean  and  free  of  dirt,  grit  or  foreign  material.    Prior  to installation, apply a thin coat of silicone grease to O-ring for ease of assembly.  Protect O-rings by applying tape over threads, sharp corners and edges of components in which the O-ring will be placed. 2-21







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