LESSON 1
PERFORM TECHNICAL INSPECTION ON THE M3A4 SMOKE GENERATOR
TASK
Perform technical inspection on the M3A4 smoke generator.
CONDITIONS
Given a description of the M3A4 smoke generator and information about and illustrations of the checks
to be made on the generator prior to organizational maintenance.
STANDARDS
Demonstrate competency of the task skills and knowledge by responding to the multiple-choice test
covering the description of the generator and the checks to be made on the generator prior to
organizational maintenance.
REFERENCES
STP 3-54B1-SM
TM 3-1040-276-10
Learning Event 1
DESCRIBE THE M3A4 SMOKE GENERATOR
The M3A4 smoke generator (Figure 1) is a
device that vaporizes fog oil and releases it to
condense in the air as a white smoke useful for
large-area screening. The mechanical generator
has a pulse jet engine with only one moving part
-- a 16-petal engine valve. The engine uses
approximately 3 gallons of gasoline per hour.
Smoke is produced when fog oil is injected into
the engine tube while the engine is in operation.
Fog oil is atomized by the hot combustion gases
that move past the fog oil injection nozzle at a
high velocity. The generator may be operated
on the ground, from a truck or boat, or on any
other reasonably level base. Because of its
simple construction, this generator may be
operated continuously for extended periods with
normal maintenance.
Figure 1. M3A4 Smoke generator.
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