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 TB 55-1900-202-12-2
Engine
Engine RPM
TBO
Classification
Low Speed
0-600
14000 Hrs.
Medium Speed
601-1200
9000 Hrs.
High Speed
1201-3000
10,000 to 12,000 Hrs.
Air Cushioned Vehicle
Present
6600 RPM
1200 Hrs.
Target
6600 RPM
1500 Hrs.
Quantity Number of Analytical Overhauls.
When deemed necessary by Chief Engineer (Shore Installation)
Maintenance Officer.
Table 2. Auxiliary Engines.
Caterpillar D311, D318, D364 and D375
Cleveland Diesel all models
Detroit Diesel all models
General Motors all models
Joshua Hendy D-56-E
Norberg 4SF2 and 4F53
Waushesha all models
Engine
Engine RPM
TBO
Classification
Low Speed
0-600
12000 Hrs.
Medium Speed
601-1200
8000 Hrs.
High Speed
1201-3000
6000 Hrs.
Quantity Number of Analytical Overhaul.
When deemed necessary by Chief Engineer (Shore Installation)
Maintenance Officer.
4. Instructions.
a. Organizational, Direct and General Support Maintenance Activities.
(1) A target TBO of a cyclic drydock (overhaul) is established for all Marine Main and Auxiliary Engines. This
target TBO is established as a realistic goal considering present day experience; however, this does not relieve the crew,
or the DS/GS, of providing sound maintenance during normal operation (Daily Operation), and correcting problems
detected through inspections (PMCS).
(2) Ninety days prior to cyclic drydock or target TBO established by TROSCOM and AR 750-1, the operating
activities shall conduct a meeting with the Marine Surveyor, Chief Engineer, Maintenance Officer and Vessel Master or
other responsible individual. Specifications for vessel overhaul/drydocking will be initiated at this time to cover work to be
accomplished by contractor/shipyard. TBO's will be discussed by participating parties on all on-board equipment (engine
hours since overhaul).
(3)
Components will be overhauled with engine upon which they are installed.
2
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