Section I. GENERAL
c. Numbers in parentheses on the illustra-
a. These instructions are published for the
tions indicate quantity. Numbers preceding no-
use of the personnel to whom the Arc Welding
menclature callouts on illustrations indicate the
Machine, Models LE 300, LEW 300, and LEB
preferred maintenance sequence.
information on the operation, preventive main-
a. DA Forms and records used for equip-
tenance services, and organizational mainte-
ment maintenance will be only those prescribed
nance of the equipment, accessories, compo-
in TM 38750.
b. Report of errors, omissions, and recom-
information for direct, general support, and
mendations for improving this publication by
depot maintenance. Also included are descrip-
the individual user is encouraged. Reports
tions of main units and their functions in re-
should be submitted on DA Form 2028 (Rec-
lationship to other components.
ommended Changes to DA Publications) and
forwarded direct to: Commanding General,
U.S. Army Mobility Equipment Command,
contains the list of basic issue items and main-
ATTN : AMSME-MPP, 4300 Goodfellow Blvd.,
tenance and operating supplies authorized the
St. Louis, Mo. 63120.
operator of this equipment, Appendix C con-
tains the maintenance allocation chart.
load. (Model LEB 300 operates at 1800 revolu-
tions per minute), The direction of engine ro-
1-2, and 1-3), models LE 300, LEW 300, and
tation is counterclockwise when viewed from
LEB 300 respectively, is a self-contained, skid-
flywheel end of engine.
c. Generator. The welding generator (fig.
mounted, enclosed unit and is equipped with
is a compound-wound,
dc generator rated
the necessary controls, instruments and acces-
sories for operation. All accessories are readily
at 300 amperes at 40 volts but capable of a
accessible through hinged panels. The unit is
range of 60 to 375 amperes while operating at
equipped with two towing eyes on each end of
a 60 percent duty cycle. (Model LEB 300 dc
generator is rated at 300 amperes at 32 volts).
the skid for towing, or lifting. The unit may
The open-circuit voltage with full excitation
also be used as a 3-kilowatt auxiliary genera-
with interpole windings and is fan cooled. The
The engine (fig. 1-1)
is a six-
cylinder, water-cooled, gasoline engine, has
full-pressure lubrication and is designed to
through a fixed coupling.
The exciter (fig. 1-1
) is a heavy-
operate at 1400 revolutions per minute under