Chapter 7. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

Figure 6-1. Elevator Hoist Control Schematic

Figure 7-1. Scaffold Winch Assembly

TM-32-5985-343-14-P Antenna Tower TS-1A Manual
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TM 32-5985-343-14&P

CHAPTER 7

DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

Section l. GENERAL

Chart, Appendix D, of this manual.

Maintenance

7-1. SCOPE. Direct support maintenance for the

instructions in this chapter cover replacement of tower

Antenna Tower TS-IA consists of the maintenance

components.

functions authorized by the Maintenance Allocation

Section II. TOOLS AND EQUIPMENT

7-2. TOOLS AND TEST EQUIPMENT. The tools and

7-3. TEST EQUIPMENT. The AN/USM-223 multimeter

the test equipment needed for direct support

is used for voltage and resistance measurements in the

maintenance are listed in Appendix D, Maintenance

circuits of the tower and elevator hoists.

Allocation Chart.

Section III. TROUBLESHOOTING

7-4. GENERAL. Refer to table 5-5 for troubleshooting procedures.

Section IV. MAINTENANCE OF ANTENNA TOWER TS-1A

WARNING

7-5. REMOVAL OF COMPONENTS. See paragraph 5-

10 for removal instructions for all components of the

High voltage is used in operation of

tower.

electric hoists. Death or injury may

result from contact with high voltage

7-6. DISASSEMBLY.

connections. The 230/460-volt power

a. Safety Precautions. Refer to paragraphs 2-11

for hoist motors and controls is

and 5-10 for safety precautions.

lethal. Disconnect this power before

servicing hoist motors or controls, or

b. Scaffold Winch Assembly. Refer to figure 7-1.

any hoist circuits.

(1) Remove winch cable (6) from winch

(11).

c. Tower Hoist. Refer to figure 7-2.

(2) Remove sheave (3) and two pulley

(1) Detach motor assembly (11 and 12) by

spacers (2) from winch support (10) by removing bolt

removing four bolts (13), nuts (14), and lockwashers

(1), nut (5), and lockwasher (4).

(15). Disengage motor sprocket (10) from chain (7).

(3) Detach winch (11) from winch

support (10) by removing two bolts (7), nuts (8), and

lockwashers (9).

7-1

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