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.
Intermediate support maintenance is accomplished by replacing 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 in TM 55-1930-209-14&P-18. For maintenance of
other equipment onboard, consult appropriate manual.
3-16.2 Maintenance instructions. Maintenance instructions are presented in paragraph 3-18, Troubleshooting
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.
a. Troubleshoot bow crane system as directed in Table 3-2.
b. Troubleshoot bow crane as given in suggestions of Fault Finding list on page 9 in FASSI manual, Terms of
Warranty Use and Maintenance in Appendix B.
c. Troubleshoot anti-2-block system according to Troubleshooting List in the Krueger Crane Systems manual,
System Mark H Troubleshooting List, in Appendix B.
Table 3-2. Bow Crane Troubleshooting
1. Hydraulic power unit does-not
a. Switchboard circuit
a. Close circuit breaker
start when START button is
breaker P16 open (OFF)
b. HAND/OFF/AUTO switch
b. Turn switch to HAND
on motor controller not
START button inoperative
d. Loose or broken electrical
d. Inspect and troubleshoot bow
connection at hydraulic
crane electrical system. Repair
power unit controls,
located in void 1
2. Booms drop continuously with
a. Internal leakage in overflow
a. Replace overflow valve
or without load, control handle
b. Load to be transported
b. Stop operation, decrease load
exceeds crane lifting
to within crane's capacity
3. Crane will not lift load
a. Hydraulic system M21
a. Remove and replace pump with
b. System hydraulic pressure
b. Check system hydraulic pres-
sure. If lower than 3000 psi,
adjust main overflow valve to