Raising Bow Ramp.

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

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.

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