TM 5-6675-348-13&P
INTRODUCTION
Content
Para
Page
Scope...........................................................................................................................................
Maintenance Forms and Records ..............................................................................................
Equipment Improvement Report and Maintenance Digest (EIR MD) and Equipment
Improvement Report and Maintenance Summary (EIR MS) .............................................
Submitting Quality Deficiency Reports (QDR) ........................................................................
Destruction of Army Materiel to Prevent Enemy Use.............................................................
Warranty Information ...............................................................................................................
Reference Information ...............................................................................................................
a.
Type of Manual/Model Numbers/Equipment Name.
This manual is used for operation, maintenance, and installation of Laser Leveling Equipment used on
the 130G Grader, the D7F, D7G, D7H, and D7R Dozers, the 613B and 621B Scrapers, and the HYEX.
b.
Purpose of Equipment.
The laser diode emits a thin, round beam of light. Energy in this light is at a wavelength that will
activate light-sensitive cells in the receiver.
The mechanism in the laser rotates the beam at a constant 600 revolutions per minute. The light beam
remains perpendicular to the axis of rotation at all times.
As the beam rotates about the axis, it describes a "plane" similar to a CD-ROM, with a radius of
1,000 ft (305 m). In theory, the beam does not waver from the plane.
As the rotating beam strikes the receiver, it activates cells at 600 times per minute (10 times per
second). This happens so fast that it gives the appearance of a solid plane of light. This solid plane of
light establishes a reference above ground. It can be adjusted up or down by mounting the laser on a
tripod.
The Laser Transmitter mounted in relation to the cutting edge (on mast) allows the Operator to
"transfer" the plane to the ground the Operator is working. It does this by showing the Operator which
direction to move the cutting edge to keep the distance from the ground to the light plane constant.
MAINTENANCE FORMS AND RECORDS.
Department of the Army forms and procedures used for equipment maintenance will be those prescribed by
DA PAM 738-750, The Army Maintenance Management System (TAMMS) (Maintenance Management
UPDATE).
