4-14.1.2 Any IDS/IGS maintenance beyond capability of crewmembers is provided by a shore-based area support
maintenance unit. This unit also determines if depot support maintenance is required.
4-14.1.3 Intermediate support maintenance is accomplished by replacing components or major end items.
4-14.1.4 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.
4-14.1.5 Maintenance Allocation Chart (MAC) is in Appendix C in TM 55-1 930-209-14&P-18. For maintenance of other
equipment onboard, consult appropriate manual.
4-14.2 Maintenance instructions. Maintenance instructions consist of paragraph 4-16, Troubleshooting.
4-15 Preventive maintenance checks and services. See TM 55-1930-209-14&P-13 for preventive maintenance
checks and services for handling equipment. See TM 55-1930-209-14&P-19 for complete preventive maintenance
checks and services for all systems on the ROWPU Barge.
4-16 Troubleshooting. Conditions listed in Table 4-1 may occur while operating the void 4 trolley hoist. While this list
is not all inclusive, it does provide some of the more common faults that could occur during operation. Notify higher
level maintenance of those discrepancies or tests that are beyond the capability of the unit level to correct or perform.
4-17 Maintenance procedures
4-17.1 General. Maintenance instructions for the void 4 trolley hoist involve lubricating, disassembling, repairing,
replacing, and reassembling equipment requiring spare parts listed in TM 55-1930-209-14&P-18. No special tools are
required. When performing maintenance, be sure to follow safety precautions in this manual and manufacturer's
manual/instructions in Appendix B.
4-17.2 Lubrication. Lubricate 1 1/2-ton trolley hoist according to instructions on page 9, Chester Hoist Division, Parts
and Instruction Manual Low Headroom, in Appendix B.
4-17.3 Cleaning and Inspection.
Wipe clean with rag dampened with hot soapy water or to remove grease with solvent. Wipe dry with clean
Visually inspect trolley hoist structural members for evidence of bends, distortion, broken welds, cracks,
corrosion, or damage. Remove corrosion and touch up painted parts according to TB 43-0144.
Visually inspect hook for deformation, cracks, wear, damage, or malfunctioning latch and hook attachment.
Replace hook if necessary.
Visually check chains for excessive wear, twist, distorted links, stretch, nicks, and gouges. Apply lubricant if
necessary. Replace damaged chain.
Visually inspect wheels for damage and wear, and drive wheel hubs for loose clamping bolts. Replace
Visually inspect brake mechanism for worn, glazed, or contaminated friction disks, worn pawls, and
damaged pawl springs.
Visually inspect hand chain wheels, chain attachments, suspension bolts, shafts, gears, and bearings for
worn, cracked, or distorted parts.
Visually check lubrication points specified on page 9 in the Chester Hoist Division Bulletin J in Appendix B.