TM 5-6675-270-15
6-24. Assembly
parts having minor thread damage. Replace de-
fective parts that cannot be repaired.
zontal circle prism assembly.
b. Install the horizontal circle prism assembly
HORIZONTAL SLOWMOTION SCREW ASSEMBLY
Section VI.
6-25. General
a. Cleaning. Clean all parts with a cleaning
The horizontal slowmotion screw assembly per-
solvent and dry thoroughly. Remove all grease
mits the operator of the theodolite to make slow
and foreign matter from inside the housing,
and precise lateral corrections to the azimuth of
spring, and spring housing. Thoroughly clean the
the telescope after making a rough sighting to
lead screw, stop nut, and threaded bushing.
the target.
b. Inspection. Inspect all threaded surfaces for
6-26. Disassembly
worn or damaged threads. Inspect the spring for
wear, breaks, and collapsed coils. Inspect the pin
Refer to figure 5-6 and remove and disassemble
and housing for burs, cracks, and bends. Inspect
the horizontal slowmotion screw assembly.
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