Figure 8-58. Middle and top ladder sections installed

TM 5-5430-209-12

(2) Top Section.

(a) Assemble ladder rails (1 and 2) and step

(3) with bolts (4) and nuts (5).

Follow the

procedures in b above.

(b) Install handrails (9) at top of ladder rails.

Insert bolts (4) through the horizontal leg of ladder rails

and handrails (9), in that order. Secure with nuts (5) and

bolts (4).

d. Installing Ladder Sections.

Place access

ladder (13, fig. 1-5) where convenient to pressure

vacuum valve (6) at outer perimeter of the deck.

(1) Bottom Section.

(a) Lift bottom section and set the end bolt

holes of lower braces (7 and 8, fig. 8-67) over the bolts

in bottom chime of first ring staves. Set end boltholes of

middle braces (10 and 11) over the bolts in bottom

chime of second ring staves. Mark the bolts, move

section to one side, and remove the nuts.

(b) Set braces back over the bolts in the

chimes. Install nuts and tighten the bolts.

lower braces (7 and 8).

(2) Middle Section.

(a) Place the temporary ladder along the

installed bottom section. Carry a haul line to the deck.

(b) Attach lower end of haul line to top step of

the section.

boltholes in bottom of ladder rails with boltholes in

plates (6, fig. 8-57). Insert bolt through bolthole in each

ladder rail (1 and 2, fig. 8-58) and plates (6, fig. 8-57) to

hold the section in place.

(d) Set end boltholes of top braces (7 and 8,

fig. 8-58) over bolts in the bottom chime of third ring

staves. Mark the bolts.

(e) Remove temporarily installed bolts and

move section to one side. Remove nuts on bolts in the

chime.

(f) Set the section back in position with braces

over bolts in the chime. Install nuts on the bolts.

(g) Insert bolts through ladder rails (1 and 2).

Install nuts on bolts protruding through plates. Tighten

Figure 8-58. Middle and top ladder sections installed.

bolts in plates and chime. Remove the haul line.

(3) Top Section.

(a) Attach haul line to top step of section and

(b) Install plates (6) at the top of rails (1 and 2).

follow procedure in (2) above.

Follow the procedure in b above.

(b) Mark bolts on the deck and move section

to one side. Remove the nuts.

Insert bolts (4) through the inside bolt holes of plates (6)

and braces (7 and 8) in that order. Install nuts (5) on

handrails (9) over the bolts in the deck. Install nuts on

bolts (4). Tighten the bolts.

the bolts.

8-38