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OPERATIONAL CHECKS
Up
TM-5-6675-329-13-P Self-Leveling Surveying Level (Wild Heerbrugg Model NA2-80) NSN
Next
Table 4-2. Organizational Preventive Maintenance Checks and Services
TM 5-6675-329-13 & P
Table 4-1. Instrument Leveling and Checks (Cont)
Operation
Normal Indication
Step
Corrective procedure
3
Sight instrument using open sight (Figure 1-2,
(cont)
item 5) and turning instrument by hand until it
is pointed at leveling staff.  Turn focusing
knob (9) to achieve normal indication.
Section IV: PREVENTIVE MAINTENANCE
4-8
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
Table 4-2 presents recommended checks and services arranged in a logical sequence. These service items
should be performed at the indicated time interval. When the instrument is not used daily, it is not necessary to perform
the daily scheduled procedures. Instead, perform daily scheduled procedures before each use of the instrument.
Table 4-2. Organizational Preventive Maintenance
Checks and Services
D - Daily
W - Weekly
M - Monthly
EQUIPMENT IS
INTERVAL
ITEM
ITEM TO BE
PROCEDURES
NOT READY/
NO.  D W M
INSPECTED
AVAILABLE IF
1
Surveying
Perform operator preventive maintenance checks
Equipment does not
Level NA2-80
and services (Table 2-2).
pass all indicated
operator checks.
(Proceed to items
2 through 8 follow-
ing.)
2
Tripod Assy
Check Tripod Assy GST-40 leg(s) movement
Tripod shifts of
GST-40
for sufficient tightness to keep tripod stable
its own accord.
after it has been set up.
4-5

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