LESSON 3 - GENERAL INFORMATION
This lesson is written in two sections, 1 and 2. Each section has a Lesson Exercise which
will require responses from you based on information presented in the lesson. If you are unable
to answer a question, return to the lesson material and read the portion of the lesson which
pertains to that question. The location of the correct answers to each Lesson Exercise will be
specified at the end of each exercise. You may write the answers to each question on the Lesson
Exercise Sheet and then check your answers with the Exercise Solutions.
SECTION 1. OPERATOR'S MAINTENANCE
a. Preventive Maintenance (PM). The purpose of PM is to prevent the occurrence of
trouble, to reduce downtime, and to insure that the equipment is serviceable. To meet these
objectives the equipment must receive systematic care, inspections, and servicing on a scheduled
basis. PM checks and service charts provide an outline of the functions to be performed at
specific intervals. Operator's preventive maintenance checks and services for the radio set are
required on a daily and weekly basis. No tools or test equipment are required to perform
operator's preventive maintenance. To assist operators in maintaining combat ready equipment,
checks and services charts are provided in TM's pertaining to equipment. The charts indicate
what to check, how to check, and what normal conditions to expect. If a defect cannot be
remedied by the operator, higher category of maintenance or repair is required. Records and
reports of these checks and services must be made in accordance with the requirements in TM
38-750.
b. Scope of Operator's Maintenance. There are five main areas of maintenance duties
assigned to the operator under Operator's Maintenance. These duties are daily and weekly
preventive maintenance checks and services, cleaning exterior surfaces, operational checks, and
repairs and adjustments. Each of these items will be covered in greater detail.
c. Operator's Daily Preventive Maintenance Checks. These checks are performed on a
daily basis by the operator of the radio set as a routine part of his regular duties. There are also
special situations that require the performance of daily maintenance. One is before the
equipment is taken on a mission, another is when the equipment is initially installed or
reinstalled after removal, and finally once each week if the equipment is maintained in a standby
condition.
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