10-7 Prestart procedures
These procedures start with the workboat in the water and secured to side of the
barge with four lines using the small workboat cleats on the forward two-thirds of
the barge on either side. This is the area with the vertical fenders. Procedures for
launching from and returning the boat to its storage cradle on the deckhouse top
are provided in paragraph 10-13.
Make an overall visual check of workboat's condition. Check boat's hull and installed equipment, such as running
lights and searchlight, and also make sure it is properly secured with lines and bumpers.
Open cabin and make sure master switch is OFF (Figure 10-3). Obtain engine hatch tool from under operator's
If necessary, move messenger line reel unit (Figure 10-7) as far forward as possible. Pull pins on sliding tracks
on each side of unit, shove unit forward against the stops, and replace pins.
Using engine hatch tool, rotate lock nuts on each corner one half turn and slowly open engine compartment (aft
deck closure). Escaping air may indicate that water is entering engine compartment and forcing air out.
Check engine compartment to make sure there are no diesel fuel, water, oil, or hydraulic fluid leaks. Tighten
filters and fittings or take other corrective action as necessary.
Check oil level. Dipstick is on top of engine between branches of intake manifold (Figure 10-6). Oil level should
be between top and bottom of rough hatchmark area of the stick Fill with oil, when necessary, through the oil filler
cap on top of the engine. Use diesel lubricating oil CD (MIL-L-2104), SAE 20W30, above 50F and oil CD, SAE
10W, below 50F.
Check coolant level in heat exchanger by opening cap at front of engine. If necessary, fill to upper edge of splash
plate on thermostat housing. Coolant must be either a 50-50 mixture of fresh, clean water and corrosion-
protective antifreeze or fresh, clean water with a corrosion-protective additive. If coolant level is very low, check
again after engine has started and is idling. If necessary, add additional coolant to bring it to upper edge of
At rear of engine compartment, make sure battery selector switch is set to ALL position.
Close engine hatch, turn closure nuts on each comer one-half turn clockwise, and return engine hatch tool to
storage under operator's seat cushion.
10-8 Starting procedures
At operator's station, make sure all electrical circuits are OFF except bilge pumps, which should be in AUTO
Turn master switch ON.
Insert key into ignition switch and turn clockwise from OFF to position 1. This turns on engine electrical
Lower outboard drive, if in the TILT range. Small red light on outboard drive panels is on if outboard drive is in
Engine must NOT be started with outboard drive In TILT range. When engine is in
TILT UP position, water pickup point on outboard drive Is out of water and engine
cannot receive seawater to cool closed coolant system.
Release engine speed control from shift control by placing shift control lever in neutral position, and, while holding
in on button at bottom of lever, moving lever forward (Figure 10-3).
Check fuel gauge on instrument panel If refueling is necessary, make sure radio and other electrical accessories