TM 55-1930-209-14&P-1
t.
Close engine hatch and secure by turning closure nuts on each comer one-half turn and return engine hatch tool
to storage under operator's seat cushion.
u.
Before leaving boat, make sure bilge pump switch is in AUTO and all loose items have been stowed or secured.
10-13 Deployment and recovery
10-13.1 General. During storage and movement of the barge, workboat is normally carried in a specially constructed
cradle on forward section of deckhouse top and covered with a tarpaulin. The workboat is secured in the cradle by three
tiedown straps on each side of the cradle. These straps hook into three eyelets on each side of the workboat and are
pulled tight with a crank and ratchet set on the side of the cradle. For long overseas movement, these tiedown straps may
be supplemented with four steel turnbuckles, one on each comer of the workboat. These are attached to eyelets welded
to the deckhouse top and into special fittings on the workboat forward knees and the stem bitts.
10-13.2 Bow crane. A hydraulic crane mounted on the bow weatherdeck moves the workboat in and out of the water.
When not in daily use, place it in its traveling configuration as shown in Figure 10-8. Operation, maintenance and use of
the bow crane is described in TM 55-1930-209-14&P-13. The bow crane, when being used to move the workboat, has
several operating restrictions:
WARNINGS
· Never use the crane for moving the workboat when the barge is rolling 50 or
more.
· Always use the shortest possible boom reach that will provide a safe clearance
of all obstacles.
· Never use a boom extension of more than 35 feet 7 Inches for moving the
workboat.
10-13.3 Operating controls. The bow crane movement controls are on the forward side of the deckhouse top and the
hydraulic power system controls are in void 1. Crane movement controls consist of five control levers
(Figures 10-9 and 10-10), control valve system, hoses, and associated connecting hardware. The control valve system is
factory sealed and is especially designed for use in a marine environment. It has a built-in pressure relief valve, which
prevents damage to the crane from overloading; a suction valve, which ensures a continuous flow of hydraulic fluid; and a
constant flow valve, which regulates and maintains the required system hydraulic pressure.
10-13.4 Prestart procedures
a.
Check barge maintenance log on bow crane and its hydraulic system. Make sure there are no discrepancies that
would prohibit operating the bow crane.
b.
Make sure switchboard circuit breaker P16 is ON.
CAUTION
Due to high pressure In hydraulic system, crane can NOT be operated with any
visible leaks. These must be repaired prior to use. Leaks In flexible hose,
hardpiping, or Joints must be corrected. Do not confuse seepage around
hydraulic packing on actuator arms with leaks. A small amount of such seepage is
acceptable.
c.
In void 1, visually inspect hydraulic pump and motor and hard piping of crane hydraulic system for leaks or
damage. Do not use system until such leaks have been repaired.
10-21
