Section IV. MAINTENANCE OF ANTENNA TOWER TS-9A

TM 32-5985-342-14&P

Section IV. MAINTENANCE OF ANTENNA TOWER TS-9A

7-5 ANTENNA TOWER. Disassemble, clean, inspect,

(3) Remove hex nut and tower step that

repair, and reassemble the antenna tower in accordance

secure control mount plate (7) to tower leg. Remove

with the instructions listed below.

control mount plate.

(4) Remove wraplock (4) that secures conduit

NOTE

(5) to top tower brace. Remove four locknuts (13),

Be sure elevator assembly is lowered

union (13), fitting (6), rigid conduit (5), four lamps (1),

to the ground.

and two dual obstruction lights (2).

(5) Remove hardware that secures junction

a. Primary Power Disassembly.

box (15) to top tower brace. Remove junction box.

d. Tower Grounding Kit Removal. Refer to figure

WARNING

2-12.

Death or injury may result from

(1) Remove locknut (6), hex nut (5), and flat

contact with electrical connections.

washer (1) from stud (7). Lift ground wire assembly (2)

Disconnect power before servicing

from stud. Replace flat washer, hex nut, and locknut on

any electrical equipment.

stud. Secure hardware.

(2) Loosen ground rod clamp (3). Remove

(1) Turn aviation lights switch to OFF (figure

ground wire assembly (2) from ground rod (4).

3-3).

(3) Pull ground rod (4) out of ground.

(2) Turn aviation lights, elevator hoist, and

e. Elevator

Assembly

Disassembly/Removal.

convenience outlets No. 1 and No. 2 circuit breakers to

Refer to figure 2-11.

OFF (figure 3-2).

(1) Remove locknut (11), hex nut (10), and

(3) Perform

procedures

described

bolt (9) that secure winch bracket (12). Remove winch

paragraph 5-13a to disassemble ac power connections.

bracket.

(2) Remove six locknuts (7), hex nuts (6),

b. Convenience Outlets Removal. Refer to figure

and bolts (14) that secure two elevator tracks (1, 23) and

2-14.

track angles (24) to elevator. Remove the two elevator

(1) Remove hex nut (5), lockwasher (4), and

tracks.

bolt (3) that secure convenience outlet (2) to junction

(3) Remove six locknuts (7), hex nuts (6),

box mount plate (6). Remove convenience outlet.

and bolts (14) that secure six track angles (24) to

(2) Remove four hex nuts (5), lockwashers

elevator tracks (1,23). Remove six track angles.

(4), and bolts (3) that secure junction box assembly (7)

(4) Remove two locknuts (7), hex nuts (6),

to junction box mount plate (6). Remove junction box

and bolts (5) that secure diagonal brace (27) to vertical

assembly.

braces (2, 19). Remove diagonal brace.

(3) Remove hex nut and tower step that

(5) Remove four locknuts (7), hex nuts (6),

secure junction box mount plate (6) to tower leg.

and bolts (5) that secure assembled horizontal

Remove junction box mount plate.

braces (8,13,15,26) to diagonal braces (3,17) and

(4) Remove hex nut (5), lockwasher-(4), and

horizontal brace (25). Remove assembled horizontal

bolt (3) that secure convenience outlet (2) to

braces (8,13,15,26).

convenience outlet mount plate (1).

Remove

(6) Remove two locknuts (7), hex nuts (6),

convenience outlet.

and bolts (5) that secure lower end of two diagonal

(5) Remove hex nut and tower step that

braces (3, 17) to vertical braces (2,19). Remove two

secure convenience outlet mount plate (1) to tower leg.

diagonal braces.

Remove convenience outlet mount plate. Install tower

(7) Remove four locknuts (7), hexnuts (6),

step and secure with hex nut.

and bolts (5) that secure horizontal braces (8,13,15,26).

c. Aviation Lights Removal. Refer to figure 2-13.

Remove four horizontal braces.

(1) Disconnect and remove two watertight

(8) Detach hoist cable from lower horizontal

connectors (11) and three conductor cables (14)

brace (4).

between lighting control panel (12) and junction box

(9) Remove four locknuts (7), hex nuts (6),

(15).

and bolts (5) that secure two vertical braces (2,19).

(2) Remove four hex nuts (8), lockwashers

Remove two vertical braces.

(9), and bolts (10) that secure lighting control panel (12)

(10) Remove six locknuts (7), hex nuts (6),

to control mount plate (7). Remove lighting control

and bolts (5) that secure two horizontal elevator braces

panel.

(4,16) to lower sleeve assemblies.

Remove two

horizontal elevator braces.

7-2