TM 11-5820-880-12
Table 3-1. Operator Preventive Maintenance Checks and Services (Continued)
Interval
Procedures
Equipment is
Item
Item to be
not ready/
check and have repaired
Inspected
No.
or adjusted as necessary
available if:
B
D
A
W
M
*
*
Check to see that all switches and
10
controls stop at their limits unless they
are intended to rotate continuously.
*
*
Broken glass.
Meters,
Check the glass covers of all meters and
11
indicators,
frequency dial windows; be sure that they
and limits.
are not cracked or loose.
*
*
Fogged glass
Check for condensed moisture on the
12
inside of glass meter covers. This is an
indication of inadequate sealing of the
equipment, inadequate ventilation, or both.
*
*
Meter not
Check to see that glass meter covers
13
visible.
and frequency dial windows are not
discolored. Wipe off any grease, oil,
moisture, or other foreign matter that may
have accumulated on the outer
surface of the glass.
*
*
14
Check to see that all meter function
switches are in their specified positions
before turning on power. (After rf
tuning, should be in 60W-F position.)
*
*
*
15
Meter
Check all meters to see that the
needle
indicating needles are intact and straight
and that the needles move as they should. defective.
Check the movement of the needle when
the set is turned on or when changes
during operation affect the indication of
the meter.
*
*
Cables
16
Check to see that all cables are in good
condition, clean, dry, and placed where
and
they will not be damaged during normal
connectors
operation.
*
*
17
Check to see that cables are not stretched
taut, have no kinks or tight bends
(especially near the connectors), are not
pulled tight against sharp edges or
corners of equipment cases, are not under
pressure caused by items placed upon
them or leaned against them, and are not
subjected to excessive heat or direct
sunlight.
3-4
