ANTENNA INSTALLATION.

TM 32-5985-343-14&P

(3) Refer to figure 2-18. Connect elevator hoist

(b) Attach bottoms of these top track

cable (1) to elevator assembly (7) by means of anchor

assemblies (] and 16) to track support No. 10 (2) and

shackle (15).

secure with two bolts (25), nuts (17), and lockwashers

(4) Swing bottom left-hand track assembly (15,

(18).

figure 2-9) away from right-hand track assembly so that

elevator assembly can be installed.

(9) Raise the two track assemblies (15) and track

(5) Refer to figure 2-9. With elevator hoist, lift

supports 7 (5), 8 (4), and 9 (3), previously assembled on

elevator assembly. Mate its roller assembly with bottom

ground, to tower section No. 3. Fasten track supports 4

right-hand track assembly.

(] 1), 5 (10), and 6 (6) to tower legs with six bolts (7),

nuts (8), and lockwashers (9).

(a) Move bottom left-hand track assembly

(10) Align track sections of tower sections Nos. 3

(15) and position and mate it with roller assembly of

and 4. The gap between tracks for the two sections

elevator assembly.

should not be more than 1/16 inch. Attach splice plates

(b) Connect left-hand track assembly (15) to

(29) and secure with two bolts (26), nuts (27) and

track supports Nos. 1 (14) and 2 (13) by means of four

lockwashers (28).

bolts (7), nuts (8), and lockwashers (9).

(11) Repeat step (9) to attach track assemblies

(15) and track supports 4 (11), 5 (10), and 6 (6) for tower

lockwasher (9), that secure track assembly to track

section No. 2. Repeat step (10) to align track sections

support No. 3 (12).

for tower sections Nos. 2 and 3 and to attach splice

(d) Attach remaining splice plate (29) by

plates between these track sections.

means of bolt (26), nut (27), and lockwasher (28).

(12) Track supports 3 (12), 2 (13), and 1 (14) and

track assemblies (15) will be installed for tower section

(6) Refer to figure 2-18. Remove two stop bolts

No. 1 next.

(14), nuts (9), and lockwashers (10) from horizontal

track (8) elevator assembly.

(a) Install, one at a time, track supports Nos.

(7) Refer to figure 2-18. Have two persons lift

1 (14), 2 (13), and 3 (12). Fasten with six bolts (7), nuts

antenna carriage (13) and engage its rollers with

(8), and lockwashers (9).

horizontal tracks (8) of elevator assembly. It does not

(b) Attach track assembly (15) on right-hand

matter which end of antenna carriage is inserted into

side (as one faces tower face A). Secure with three

elevator assembly.

bolts (7), nuts (8), and lockwashers (9).

(8) Refer to figure 2-18. Secure antenna carriage

(13) to elevator assembly (7) by means of six bolts (11),

tower section No. 2. Make sure that gap is 1/16 inch or

nuts (9), lockwashers (10), and square beveled washers

less. Attach splice plate (29) and secure with bolt (26),

(12).

Insert two stop bolts (14), nuts (9), and

nut (27), and lockwasher (28).

lockwashers (10).

(d) Attach left-hand track assembly (15) by

(9) Visually check to see if vertical elevator tracks

one top bolt (7), nut (8), and lockwasher (9). If elevator

are aligned. If not, align them.

assembly is to be installed immediately, leave this track

(10) Perform elevator tests (paragraph 2-17b)

assembly free to pivot.

before attaching antenna.

NOTE

2-17 ANTENNA INSTALLATION.

If elevator assembly is not to be

installed immediately, temporarily

a. Precautions. Take the following precautions

secure

bottom

left-hand

track

before and during antenna installation:

assembly by rope or other means.

(1) Do not let elevator assembly go beyond its

Elevator Assembly and Antenna Carriage

upper limit of travel. Excessive cable stress could

Assembly.

result, which could cause equipment failure or injury to

persons. Take extreme care when elevator assembly

(1) Install elevator hoist cable and rope guide

approaches this position.

assembly (21, figure 2-9). Refer to steps (4), (6), and

(2) Because of weight differences between loaded

(7) of paragraph 2-16c.

and unloaded elevator assembly, shear pins may bind in

(2) Remove the temporary tiedown that secures

locked position. If this binding occurs, do not attempt to

bottom track assembly (15, figure 2-9) on left-hand side

force shear pins. Operate hoist to allow their removal.

as one faces tower face A, so that this track assembly

(3) The bottom rollers of the elevator assembly

can pivot freely.

must always be at least 6 inches from the bottom ends

of the lowest track assemblies.

2-30