TM 55-1930-209-14&P-17
2-18 Operations under extreme conditions
2-18.1 Operations in extreme heat. This boat has been designed with oversize engine compartment vents to provide
sufficient airflow for operations in tropical conditions. In temperatures above 50°F, use diesel-lubricating oil CD (MIL-L-
2104), SAE 20W30, for engine and outboard drive. Other lubricating requirements do not change with changes in
temperature or season.
2-18.2 Operations in high humidity conditions. High temperatures and high humidity combine to produce large
amounts of condensation. Since diesel engines must have fuel free of water, take precautions to prevent
condensation creating water in the fuel system.
a.
Refuel often and keep fuel tank as close to full as possible. However, allow space for fuel expansion due to heat.
b.
Do not allow boat to remain idle with a partially filled tank as this provides area for water condensation in the tank.
c.
When operating continuously in these conditions, change fuel filters every 100 hours instead of the normal 200-
hour interval.
2-18.3 Operations in extreme cold. Barge and workboat will not normally be deployed to locations with ambient
temperatures below freezing. However, in temperatures below 50F, follow these procedures:
a.
Use diesel lubricating oil CD (MIL-L-2104), SAE 10W, for engine and outboard drive.
b.
Warm glow plug longer prior to starting engine.
c.
Warm engine longer before using power.
Section III. Maintenance instructions
2-19 Maintenance concept
2-19.1 Unit level and Intermediate Direct Support/Intermediate General Support (IDS/IGS) maintenance on the workboat
will be performed onboard by crewmembers to the greatest extent possible.
2-19.2 Any I DS/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.
2-19.3 Intermediate support maintenance is accomplished by replacing components or major end items.
2-19.4 Unless other intermediate support maintenance procedures are directed, IDS/IGS maintenance normally is
provided by an Army Transportation Corps floating craft intermediate support GS maintenance unit serving terminal
operating area. Components to be disposed of are processed by this unit.
2-19.5 Maintenance allocation chart for the workboat is in TM 55-1930-209-14&P-18. For maintenance of other systems
onboard the barge, consult appropriate manuals.
2-20 Preventive maintenance checks and services. See TM 55-1930-209-14&P-17, Appendix C for preventive
maintenance checks and services for the workboat. See TM 55-1930-209-14&P-19 for complete preventive maintenance
checks and services for all systems on the ROWPU Barge.
2-33
