TM5-6675-296-14
spring plate, which contact the leveling screws to
into the crack by alternately pushing and releasing
hold them securely against the base plate, should
the lower part of the collimation lever against the
be lubricated sparingly as required. Remove base
spring of the collimation slow-motion screw. Wipe
plate. Apply grease sparingly to the sloped edges
off all the excess oil with a clean, lint-free cloth.
of the openings in the spring plate. Replace base
(2) Leveling screws. Turn one of the leveling
plate.
SCrewSoutward to the extreme length of its travel.
(4) Horizontal drive knob cover hinge. Apply
Clean it thoroughly with a clean, lint-free cloth.
1 drop of oil to the hinge pin in the hinge of the
lubricate sparingly and run the screw through its
horizontal drive knob cover. Carefully work the
travel several times to distribute the lubricant
cover forward, backward, up, and down to
evenly. Wipe off all excess lubricant. Lubricate the
distribute the oil over the working surfaces. Wipe
other two leveling screws in a similar manner.
off all excess oil with a clean, lint-free cloth.
(3) Spring plate. The sloped sides of the
Section V. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
4-11. General
systematically, so that defects may be discovered
and corrected before they result in serious damage
a. Before you operate. Always keep in mind the
or failure. The necessary preventive maintenance
CAUTIONS and WARNINGS. Perform your
checks and services to be performed are listed and
before (B) PMCS.
described in table 4-3. The item numbers indicate
b. While you operate. Always keep in mind the
the sequeuce of minimum inspection requirements.
CAUTIONS and WARNINGS. Perform your
Defects discovered during operation of the units
during (D) PMCS.
shall be noted for future correction, to be made as
c. Afler you operate. Be sure to perform your
soon as operation has ceased. Stop operation
after (A) PMCS.
immediately if a deficiency is noted during
d. If your equipment fails to operate.
operation which would damage the equipment if
Troubleshoot with proper equipment. Report any
operation were continued. All deficiencies and
deficiencies using the proper forms, see TM
shortcomings will be recorded, together with the
38-750.
corrective action taken, on DA Form 2404
e. The item number column shall be used as a
(Equipment Inspection and Maintenance
source of item numbers for the "TM Number"
Worksheet) at the earliest possible opportunity.
column on DA Form 2404, Equipment Inspection
and Maintain Worksheet, in recording results
4-12. Preventive Maintenance Checks and Services
of PMCS.
This parsgraph contains a tabulated listiug of
f. To insure that the theodolites are ready for
preventive maintenance checks and services, table
operation at all times, they must be inspected
4-3.
NOTE
Within designated interval, these checks are to be performed in the order listed.
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