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 conjunction with the throttle handwheel to obtain a fine
speed adjustment when required.
2-8. Ahead Start
a. At the Pilothouse. Place the engine order
2-6. Stopping the Engine
telegraph (8, fig. 2-1) at the desired speed AHEAD.
To stop the engine, move the astern-ahead handwheel
b. In the Engineroom.
(6, fig. 2-3) clockwise (or counterclockwise) to the center
(1) Acknowledge the engine order telegraph (1,
STOP position.
(2) Move the astern-ahead handwheel
2-7. Reversing-Astern from Ahead
counterclockwise to center STOP position.
a. At the Pilothouse. Place the engine order
CAUTION
telegraph (8, fig. 2-1) in the desired ASTERN position.
b. In the Engineroom.
Do not move the astern-ahead
(1) Acknowledge the engine order telegraph (1,
handwheel past the STOP until the
engine has stopped.
(2) Move the astern-ahead handwheel clock-
wise to center STOP position.
(3)
Then quickly move the astern-ahead
handwheel counterclockwise to the AHEADSTART
CAUTION
position. As soon as the engine starts, move the astern-
Do not move the astern-ahead
ahead handwheel clockwise to AHEAD. The engine is
handwheel past the STOP until the
reversed and will now run ahead.
(4) Adjust the throttle handwheel or governor
engine has stopped.
hand control as necessary for the required rpms.
(3) Quickly move astern-ahead handwheel
2-9. Post Operations
clockwise past astern to START. As soon as the engine
Secure equipment as instructed, then perform
starts,
move
the
astern-ahead
handwheel
preventive maintenance checks and services (tables 3-1
counterclockwise to ASTERN. The engine is now
and 3-2).
reversed and the engine will run astern. Adjust throttle
handwheel for the required number of rpm's.
Section II. OPERATION OF AUXILIARY EQUIPMENT
(4) Check alignment of raw water to the heat
2-10. General
exchanger (para 2-18).
This section will provide information on the operation of
(5) Check alignment of fuel oil system (para 2-
equipment auxiliary to, but necessary for overall
successful operation of the tug. Reference will be made
(6) Check crankcase oil level.
to figures, tables, and maintenance paragraphs as
(7) Set throttle (4, fig. 2-4) at three-quarters
required to give a thorough coverage of procedures for
open position.
placing the equipment in operation for every mode
(8) Check the starter motor and assure that all
intended; to place the equipment in standby condition,
electric terminals are tight.
or place it in shutdown status.
(9) Use fuel priming pump to assure fuel filter,
lines, manifold, and injectors are full of fuel.
2-11. Operation of Auxiliary Set (Generator and
(10) Assure that fire and salvage pump clutches
Pump)
are disengaged.
a. General. The auxiliary set consists of a 40 kw
dc generator; fire and salvage pump; clutch; priming
CAUTION
pump with V-belt drive, and clutch for disengagement.
Do not operate starter motor more
The prime mover of this set is a General Motors model
than 30 seconds at one time without
4061A diesel engine, unit No. 4-71. Two of these sets
resting it for one minute.
provide the ships electric service.
b. Diesel Engine Starting.
(11) Push starter switch (1) and release when
(1) Inspect exterior of engine and area around it
engine starts, or at 30th second of operation. See
for loose gear, tools, and waste material that could
caution above. Repeat if necessary until engine starts.
become entangled with moving parts.
Perform
12) Run engine at half speed until the water
preventive maintenance checks and services (tables 3-1
o
and 3-2).
temperature reaches 150 F. You may then set throttle
at full speed.
(2) Position disconnect (16, or 38, fig. 2-5) on
(13) The generator is now ready to place on the
main electrical panel in OFF position.
line (para 2-17g(7)(d)).
(3) Check fresh water level in expansion tank.
2-23
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