TM
5-6675-270-15
CHAPTER 2
OPERATING INSTRUCTIONS
Section
SERVICE UPON RECEIPT OF MATERIEL
be enough tension to lock the theodolite to the
2-l. Inspecting and Servicing the
tribrach assembly.
Equipment
(10) Inspect the illumination mirror (fig.
a. Theodolite and Carrying Case.
(1) Remove the theodolite and carrying case
ment. It should rotate easily but should be tight
from the shipping case
enough to stay in any desired position.
carrying case (fig. 2-l) for dents, cracks, rust,
(11) Inspect the circular level (fig. l-l and
and other signs of damage.
l-3), plate level (fig. l-l) and collimation level
(2) Refer to paragraph 2-2 and remove the
mirror (fig. 1-5 and l-6) for cracks, breakage,
theodolite from the carrying case.
and looseness.
(3) Place the theodolite (fig. 2-2) on a firm,
clean, level surface and inspect it visually for
broken or missing parts, cracked or scratched
lenses or mirrors, loose or missing hardware, and
other signs of damage.
(4) Inspect the carrying case desiccant (fig.
Pink desiccant indicates moisture saturation and
must be dehydrated or replaced.
CAUTION
At any indication of pink desiccant, the
instrument should be inspected for mois-
ture damage.
(5) Test the three leveling screws (fig. l-l
and l-2) for rough travel. They should turn easily
under thumb and finger pressure, but should be
tight enough to hold the instrument in any posi-
tion.
(6) See that the horizontal, slow-motion
screw (fig. l-l and l-2) and vertical slow-motion
without play, throughout their full travel.
(7) Inspect the horizontal clamp (fig. l-l
and
vertical clamp (fig. l-l and
and
horizontal circle clamp (fig. l-3 and l-4) for
proper operation.
(8) Inspect the optical lenses of the instru-
ment for finger marks, dust, scratches, and etch-
ing. Remove any dust with a camel-hair brush.
If breathing on the glass and wiping with a
chamois skin does not adequately clean the lenses,
clean with lens tissue and grain alcohol or acetone.
(9) Inspect the thribrach clamp lever, model
T16-MIL 66, (fig. l-7) or clamp knob, models
T16-MIL 68 and T16-68 DEG, (fig. l-8) as
2-1. Theodolite carrying case, removal and
applicable, for proper functioning. There should
installation.
2-1
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