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![]() TM 55-1915-200-10
* High pressure hydraulic systems
2-5.17.2.3. Raising Bow Ramp.
can cause serious injury in the event
of equipment failure. Do not operate
a. Conduct pre-operation check of controls as
bow ramp winch if system pressure
prescribed in paragraph 25.17.2.1.
exceeds 2000 psi. Immediately shut
down system and notify unit
maintenance.
WARNING
f. Check system hydraulic gauge (15, Sheet 2
Before operating bow ramp winch,
of 4) for reading above designed operating pressure of
be sure personnel and foreign
2000 psi. If pressure exceeds 2000 psi, shut down
objects are clear of wire rope, bow
system by depressing STOP button (31, Sheet 3 of 4).
ramp, and related components.
g. Move bow ramp winch control lever (16,
Moving ram and winch parts can
Sheet 2 of 4) to the right to raise ramp.
cause serious injury or death.
NOTE
NOTE
Ramp can be raised only from port
This procedure requires four crew
winch assembly control valve which
members: two on main deck, one on
operates
both
ramp
winch
port forecastle, and one on starboard
assemblies.
No control valve or
forecastle decks.
hydraulic gauge exist on starboard
assembly.
b. Clear bow ramp of all personnel and foreign
objects.
h. Hold control valve (16, Sheet 2 of 4) to the
right until the bow ramp is closed.
main deck to observe ramp seal and to signal
bow ramp winch operator to stop closing ramp if
i. Return valve (16) to the center neutral
necessary.
position to stop bow ramp winch.
d. Station two crew members at port And
j. Turn port and starboard handwheels (14,
starboard handbrake wheels (14, FIGURE 2-159, Sheet
Sheet 2 of 4) clockwise to reset port and starboard bow
2 of 4).
ramp winch brakes.
e.
Turn the handbrake wheels (14)
k. Turn locking bar wheels (1, FIGURE 2-160,
counterclockwise to release port and starboard drum
Sheet 1 of 2) clockwise to engage and lock port and
brakes.
starboard locking bars (2).
I. Install ladder (5, Sheet 2 of 2) on ladder
WARNING
brackets (6).
* Clear all personnel and equipment
m. Climb ladder to engage and lock two port
from bow ramp and from bow ramp
and two starboard ratchet dogs (4, Sheet 1 of 2).
path of travel. Moving ramp can
cause serious injury or death.
n. Conduct post-operation check of controls as
prescribed in paragraph 2-16.17.2.4.
2-458
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