CHAPTER 4 MAINTENANCE INSTRUCTIONS
Section I. General
Unit level and Intermediate Direct Support and Intermediate General Support (IDS/IGS) maintenance on seawater
system is performed onboard by barge crewmembers whenever possible.
Any IDS/IGS maintenance beyond capability of crewmembers is provided by a shore-based area support
maintenance unit. This unit also determines depot support requirements.
Intermediate support maintenance is accomplished by replacement of components or major end items.
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.
Maintenance Allocation Chart (MAC) is in Appendix C of TM 55-1930-209-14 & P-18. Consult appropriate
manual for maintenance of other equipment onboard.
Maintenance Instructions. Maintenance instructions are presented as follows: Section II, Preventive
maintenance; Section Ill, Troubleshooting; and Section IV, Maintenance procedures.
Section II. Preventive maintenance checks and services
See TM 55-1930-209-14&P-2, Appendix C for preventive maintenance checks and services for the Seawater
System. See TM 55-1930-209-14&P-19 for complete preventive maintenance checks and services for all ROWPU Barge
Section III. Troubleshooting
Troubleshoot seawater pumps according to Table 4-1.
Troubleshoot cooling pump according to Table 4-2.
Seawater system. Troubleshoot seawater system according to Table 4-3.
Section IV. Maintenance procedures
General. Maintenance for this system consists of lubricating, disassembling, repairing and/or replacing, and
reassembling items involving repair parts listed in Appendix G of TM 55-1930-209-14 & P-18. No special tools are
required. When performing maintenance, be sure to observe these approved shop practices.
Be sure electrical power is off before performing maintenance or repair on this
system. OPEN circuit breakers. Redtag circuit breakers or motor controller with
"WARNING - DO NOT ACTIVATE. REPAIRS BEING MADE." Observe safety
precautions in this TM and in manufacturers' manuals/instructions.