CHAPTER I INTRODUCTION - TM-11-6665-232-400006

TM 11-6665-232-40

CHAPTER I

INTRODUCTION

Section I. GENERAL

1-1. Scope

t h o s e prescribed by TM 38-750, The Army

Maintenance Management System.

a. This manual covers general support maintenance

b. Report of Packaging and Handling Deficiencies.

for Radiacmeters IM-174A/PD and IM-174B/PD. It

Fill out and forward SF 364 (Report of Discrepancy

includes instructions appropriate to general support

(ROD)) as prescribed in AR 735-11-2/DLAR

for troubleshooting and testing the equipment and

4140.55/NAVMATINST 4355.73/AFR 400-54/MCO

replacing maintenance parts. Detailed functions of the

4430.3E.

component parts of the radiacmeter are also included .

c. Discrepancy in Shipment Report (DISREP) (SF

b. An asterisk in parentheses (*) contained in the

361). Fill out and forward Discrepancy in Shipment

model letter position of the official nomenclature

Report (DISREP) (SF 361) as prescribed in AR

indicates all models of the item of equipment.

55-38/NAVSUPINST 4610.33B/AFR 75-18/MCO

4610.19C/DLAR 4500.15.

NOTE

1-4..Reporting Equipment Improvement

In this manual, except for figures 3-5, 3-8,

Recommendations (EIR)

and FO-3, all references to the IM-174A/PD

or single battery type radiacmeter will

If your Radiacmeter needs improvement, let us know.

include the IM - 174B/PD unless otherwise

Send us an EIR. You the user, are the only one who

stated.

can tell us what you don't like about your equipment.

Let us know why you don't like the design. Tell us why

1-2. Index of Technical Publications

a procedure is hard to perform. Put it on an SF 368

Refer to the latest issue of DA PAM 310-4 to determine

(Quality Deficiency Report). Mail it to Commander,

whether there are new editions, changes or additional

US Army Communications-Electronics Command,

publications pertaining to the equipment.

ATTN: DRSEL-ME-MQ, Fort Monmouth, NJ 07703.

We'll send you a reply.

1-3. Maintenance Forms, Records and

Reports

1-5. Destruction of Army Electronics

Materiel

a. Reports of Maintmance and Unsatisfactory

Destruction of Army electronics materiel to prevent

Equipment. Department of the Army forms and

enemy use shall be in accordance with TM 750-244-2.

procedures used for equipment maintenance will be

Section II. DESCRIPTION AND DATA

1-6. Description

ranges and same functional principles, The only

external difference is in the way the meterface is

Refer to TM 11-6665-232-12, Operator's and

lighted. The IM-174A/PD has an external lamp hood

Organizational Maintenance Manual for Radiacmeter

with battery while the IM-174B/PD uses an internal

IM-174(*)/PD for a general description and

meter lamp.

illustrations of the equipment.

a. IM-174A/PD. There are two versions of the IM-

1-7. Tabulated Data

174A/PD: the original version which uses six mercury

batteries to power the radiacmeter's circuitry; and the

Refer to TM 11-6665-232-12, Operator's and

updated version which has been changed to use a

Organizational Maintenance Manual for Radiacmeter

single carbon-zinc battery for circuitry power, The

IM-174(*)/PD for applicable tabulated data.

updated version (single battery type) has a new bottom

1-8. Differences Between Models

plate which replaces the old bottom plate that

contained the six mercury batteries. The new bottom

Both models of the IM-174/PD are essentially the same

plate contains an electronic power supply and

in that they have the same case, same operational

1-1