CHAPTER 1 INTRODUCTION - TM-3-1040-276-230009

TM 3-1040-276-23

CHAPTER 1

INTRODUCTION

Section I. GENERAL INFORMATION

1-1. SCOPE.

Official Nomenclature

Common Name

Nonmetallic hose assembly

Air hose

a. Type of Manual. Organizational and Direct Sup-

Manual inflating pump

Air pump assembly

port Maintenance Manual.

Air release button

Control valve and moisture

b. Model Number and Equipment Name. M3A4

proof boot

pulse jet mechanical smoke generator.

Engine tube assembly

Engine manifold

c. Purpose of Equipment. To generate large area

Nonmetallic hose

Fog oil exhaust hose

smoke screens that will reduce direct visual observa-

Rubber hose assembly

Fog oil inlet hose

tion and conceal troops, vehicles, or installations from

Tube, copper assembly

Fog oil line

enemy view.

Fuel gage

Liquid quantity indicator

Nonmetallic hose assembly

Fuel hose

1-2. MAINTENANCE FORMS, RECORDS, AND

Plug cock

Fuel shutoff valve

REPORTS. Department of the Army forms and proce-

Quick release pin

Lock pin

dures used for equipment maintenance will be those

Ignition cable

Special purpose cable

prescribed by DA PAM 738-750, The Army Mainte-

M3A4 smoke generator

Generator, Smoke.

nance Management System (TAMMS), as contained in

Mechanical: Pulse Jet,

Maintenance Management Update.

M3A4

Pin and chain assembly

Headed straight pin

1-3. DESTRUCTION OF ARMY MATERIEL TO PRE-

Tube assembly

Pressurizing line

VENT ENEMY USE. Destroy M3A4 smoke generator

Tube assembly

Purging air line

components by mechanical means, demolition, fire, or

Toggle valve

Shutoff cock

improper operation as described in TM 43-0002-31.

1-6. REPORTING EQUIPMENT IMPROVEMENT REC-

1-4. PREPARATION FOR STORAGE OR SHIPMENT.

OMMENDATIONS (EIR's). If your M3A4 smoke gener-

Refer to TM 740-90-1 for administrative storage

ator needs improvement, let us know. Send us an EIR.

instructions.

You, the user, are the only one who can tell us what

you don't like about your equipment. Let us know why

1-5. OFFICIAL NOMENCLATURE, NAMES, AND

you don't like the design or performance. Tell us why a

DESIGNATIONS. This listing includes nomenclature

procedure is hard to perform. Put it on an SF 368 (Qual-

cross-references used in this manual.

ity Deficiency Report). Mail it to us at Commander, US

Army Armament, Munitions, and Chemical Command,

ATTN: AMSMC-QAD (R), Rock Island, IL 61299-6000.

We'll send you a reply.

Section Il. EQUIPMENT DESCRIPTION AND DATA

1-7. EQUIPMENT DATA. See TM 3-1040-276-10.

Section Ill. PRINCIPLES OF OPERATION

1-8. PRINCIPLES OF OPERATION. The M3A4 pulse

the following schematic flow diagram. Each of the

maintenance significant functional components of the

jet mechanical smoke generator uses fuel (gasoline), air

M3A4 smoke generator described below is repre-

pressure, exhaust gases, and fog oil to start, operate,

sented in this diagram.

generate smoke, or purge the generator as shown on

1-1