CHAPTER 4 ORGANIZTIONAL MAINTENANCE INSTRUCTIONS

TM 11-6665-245-12

CHAPTER 4

ORGANIZTIONAL MAINTENANCE INSTRUCTIONS

Section I. TOOLS AND EQUIPMENT

4-2. Materials Required for Maintenance

4-1. Tools and Equipment Required

Tools and equipment authorized at the organizational

For a list of materials required for

category of maintenance are as follows:

organizational maintenance of the radiac

set refer to appendix C.

a. Tool Kit, Electronic Equipment TK-101/G.

b. Multimeter AN/USM-223.

Section II. Repainting AND Refinishing INSTRUCTIONS

area.

4-3. Preparation for Painting

4-5. Touchup Painting

Remove rust and corrosion from metal surfaces by

Brush two coats of paint on the primed metal to prevent

lightly sanding with fine sandpaper.

it from further corrosion. Refer to the applicable clean-

4-4. Priming

ing and refinishing particles specified in SB 11-573 and

TB 43-0118.

Apply one coat of zinc chromate primer to the sanded

Section III. TROUBLESHOOTING

The following visual inspections should be made before

4-6. General Troubleshooting Instructions

performing the troubleshooting procedures in table 4-1:

Troubleshooting of the radiac set is based on the system

a. Radiacmeter.

o p e r a t i o n a l check contained in the operator

(1) Make sure that the main probe coil cord is ful-

troubleshooting procedure discussed in section 3-6. To

ly connected to the front panel connector and tight.

troubleshoot the Radiac Set, note any unusual perfor-

(2) Make sure that headset bayonet connector is

maria or condition during the operational check. Look

fully plugged into the front panel connector and secure-

for the corresponding symptom in the troubleshooting

Iy locked in place.

chart (table 4-1) and perform the corrective measures in-

dicated. If the corrective measures do not remedy the

(3) Make sure that the batteries are properly in-

trouble, or if the corresponding symptom is not listed,

stalled.

higher category of maintenance is required.

(4) Make sure that the front panel selector switch

is in the desired ON position.

4-7. Troubleshooting by Visual Inspection

Table 4-1. Troubleshooting Chart

Corrective Measures

Probable Trouble

Symptom

a. Replace batteries.

a. Batteries dead or

Meter reads zero with range

missing.

switch at BATT.

b. Clean connections.

b. Poor battery connection.

c. Tighten switch knob set

c. Switch knob loose.

screw.

Meter pointer swings below

Batteries installed in reverse

Reverse battery position.

zero.

position.

No indication when tested

a. Replace probe.

a. Faulty probe.

with a check source.

b. Replace coil cord.

b. Faulty coil cord.

Front panel meter indicates

Faulty headset.

Replace headset.

but no audible sound in

headset.

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