Table 4-1. Instrument Leveling and Checks (Cont)

TM 5-6675-329-13 & P

Table 4-1. Instrument Leveling and Checks (Cont)

Operation

Normal Indication

Step

Corrective procedure

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

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.)

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