TM 5-6675-329-13 & P
Section II: PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
Before-you operate - Always keep in mind the CAUTIONS contained in this manual. Perform your before (B)
PMCS. (Table 2-2).
While you operate - Always keep in the mind the CAUTIONS contained in this manual. Perform your during
(D) PMCS. (Table 2-2).
After you operate - Be sure to perform your after (A) PMCS. (Table 2-2).
If your equipment fails to operate - Troubleshoot with proper equipment. Report any deficiencies using the
proper forms. See TM 38-750.
The following PMCS procedures are designed to prevent trouble for the equipment operator, and to assure
that the Surveying Level NA2-80 is ready when the operator is ready to work. Service intervals have been designed for
the operator to quickly check the readiness of the instrument to function perfectly. Possible defects that may be
encountered when performing the PMCS are indicated in the 'Equipment is Not Ready If:" column of Table 2-2 following.
If the operator can correct the problem, he should do so before starting on continuing operation.
Troubles requiring corrective action beyond the scope of the operator level maintenance must be reported,
and the equipment submitted to organizational maintenance.
The instrument should be kept clean. If telescope objective housing (Figure 1-2, item 4) and/or telescope
eyepiece (item 6) appear dusty or dirty, they may be cleaned with a dusting brush (Figure 1-5, item 5) or a lens tissue
and approved cleaning solvent.
Do not rub lens with cloth or fingers.
Operator PMCS procedures are indicated in Table 2-2.