4-2
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 scope is
ready at all times. Procedures listed in Table 4-1 are a systematic
inspection of the Mars that will enable you to discover defects that
might cause the scope to fail on a mission.
4.1.2. PMCS PROCEDURES
The frequency of performing PMCS is as follows:
1. Daily when the scope is in use.
2. When it is removed from the case for any reason.
TABLE 4 -1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES
SEQ.
NO.
ITEM TO
CHECK
CHECKING PROCEDURE
NOT FULLY MISSION
CAPABLE IF:
1
Complete-
ness
Inventory items by means
of comparing with the data
specified in this manual.
Items missing.
2 Scope Body
Inspec t for missing screws
or connector cap.
Screws or connector
cap missing.
3
Front Lens
Cap
Inspect for cuts, tears and
dirt. Clean as required.
Cap torn or cut.
4 Eye Cup
Inspect for cuts, tears and
dirt. Clean as required.
Cap torn or cut.
5 Lenses
Inspect for cleanliness,
scratches, chips or cracks.
Clean as required.
Chipped, cracked or
if scratches hinder
vision through the
scope.
6
Battery
Compart-
ment
C h e c k fo r c o r r o s i o n ,
springs tension, cap dam-
aged or retainer broken.
Check O-ring for cuts or
damage.
Springs corroded or
damaged. Retainer
broken. Cap or O-ring
damaged or missing.
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