Preventive Maintenance Checks And Services (Pmcs); Purpose Of Pmcs; Frequency Of Performing Pmcs - ATN ThOR Series Operator's Manual

4.1. PREVENTIVE MAINTENANCE
CHECkS AND SERVICES (PMCS)

4.1.1. PURPOSE OF PMCS

pmcS is performed daily when in use to be sure that the sight is
ready at all times. Procedures listed in Table 4-1 are a systematic
inspection of Thor that will enable you to discover defects that
might cause the sight to fail on a mission.

4.1.2. FREqUENCY OF PERFORMING PMCS

The frequency of performing pmcS is as follows:
a. Daily when the sight is in use.
B. When it is removed from the case for any reason.
TABLE 4-1. PREVENTIVE MAINTENANCE CHECkS AND SERVICES
SEq. ITEM TO
NO. CHECk
complete-
1
ness
2 Sight body
Front lens
3
cap
battery
4 compart-
ment
reticle ad-
5 justment
knob
6 lenses
4-2
CHECkING PROCEDURE
Inventory items by means
of comparing with the data
specified in this manual.
Inspect for missing screws
or connector cap.
Inspect for cuts, tears and
dirt. clean as required.
check for corrosion, springs
tension.
check for operation (without
batteries).
Inspect for cleanliness,
scratches, chips or cracks.
clean as required.
NOT FULLY MISSION
CAPABLE IF:
Items missing.
Screws or connector
cap missing.
cap torn or cut.
Springs corroded or
damaged.
Knob inoperative.
Knob missing.
chipped, cracked or
if scratches hinder
vision through the
sight.