TM 55-1930-209-14&P-17
e.
In void 1, push up on top switch on hydraulic pump controller (aft bulkhead) and set side switch to AUTO position.
f.
On forward weather deck, visually check exposed hardpiping and flexible hydraulic lines for cracks or leaks.
Check crane base to ensure it is secure and make sure forward J weather deck is clear of any material that might
obstruct bow crane movement.
g.
Inside watertight control box on deckhouse top, activate anti-two block system.
h.
Inside watertight control box, push START button on START/STOP panel. High-pitched whine of hydraulic pump
indicates crane is ready for use.
i.
Using crane control sticks, deploy crane from traveling position. Extend all booms to their maximum length and
slew crane around in at least one complete circle. During these movements, check for any change in pitch of the
hydraulic pump noise and any jerky, sticking or uneven movement of any part of the crane. Note these
symptoms, and check crane carefully before using. See TM 55-1930-209-14&P-13 for details on crane
maintenance.
2-17.3 Workboat deployment procedures
WARNING
Crewmembers, crane and workboat must never touch VHF/FM antenna mounted
outboard of starboard railing. Antenna may contain high voltages that will
seriously injure personnel.
a.
Move crane to position hook over center of workboat in its cradle on deckhouse top.
b.
On workboat, make sure two seawater drain plugs on bottom of hull are installed with properly fitting gaskets and
are tight.
c.
Take boat-lifting harness from storage in cabin and attach to three lifting points on workboat; two eyes on bottom
of stern mooring bitts and one eye under cabin floor. Open aft cabin top hatch to allow front lifting harness to
reach crane hook without damaging cabin top.
d.
Place lifting harness ring in crane winch hook and use crane winch to take up slack in harness.
CAUTION
Non-Commissioned-Officer-in-Charge (NCOIC) must supervise crane operator and
crewmembers on control lines to control boat movement. Crane operator can not
see all portions of workboat when it is being moved. To control crane movement,
NCOIC uses hand signals (Figure 2-13) or walkie-talkies to give directions to crane
operator.
e.
Attach at least two control lines to boat to prevent swinging, twisting and yawing when crane lifts boat from cradle.
f.
Check crane winch hook and harness alignment to make sure it will lift boat vertically.
g.
When ready, release tension on three tiedown straps on each side of cradle (Figure 2-14) and station
crewmembers on control lines. Using crane winch, lift boat about 6 inches vertically from cradle.
h.
If all is under control, unhook three tie-down straps on each side of cradle.
i.
Lift boat vertically to clear all items on deckhouse top and slew crane in a counterclockwise direction to move boat
over starboard side. Keep control lines tight (see Figure 2-15).
j.
Keep control lines tight to control boat during movement.
WARNING
In moving workboat with crane, workboat and crane must never pass over
crane operator or other crewmembers.
2-28
