TM5-6675-296-14
(d) Attach gasket (3) and collar (2) to base
(3) Cleaning, Inspection, and Repair.
with screws (1).
(a) Clean all metal parts with soap and
(5) Installation.
water and dry thoroughly. Brush threaded surfaces
(a) Install the desiccant container in the
free of any foreign matter. Wipe the rubber gasket
base.
clean with a soft cloth.
(b) Place the theodolite in the carrying case
(b) Inspect all threaded surfaces for worn or
base (5, fig. 4-21).
damaged threads. Inspect the lever nuts, slide
(c) Slide levers (2) toward theodolite and
levers, and washers for burrs and worn surfaces.
tighten nuts (1).
(c) Inspect the base for cracks and a broken
casting. Inspect the collar for bends, breaks, and
4-17. Haversack
out -of -round.
a. General. The haversack is used for carying
(d) Inspect the rubber gasket for damage or
the theodolite when it is impractical to carry the
hardening because of age or excessive heat.
unit using the carrying case. The theodolite in its
(e) Remove all burrs from the base, slide
carrying case is strapped in the haversack, which
levers, lever nuts, and collar. Straighten minor
in turn, is carried on the operator's back.
bends in the collar and washers. Replace all
b. Cleaning and Inspection.
defective parts.
(1) Brush the haversack free of dust and dirt.
(f) Inspect the sections of the desiccant
Clean the straps with saddle soap.
container for bends, breaks, and damaged threads.
(2) Inspect the haversack for damage and
(g) Inspect the desiccant for color. Ser-
defects that would render it unserviceable. Repair
viceable desiccant is blue in color. Pink desiccant
or replace a defective haversack.
indicates moisture saturation, and the desiccant
4-18. Accessory Case
m u s t be dehydrated or replaced. Instrument
s h o u l d be inspected for moisture damage if
a. Inspection.
desiccant is pink.
(1) Inspect the accessory case for damage and
(h) Replace the desiccant or container as
defective zipper and snaps. Make certain that the
necessary.
case contains the components shown by figure
(4) Assembly.
(2) Inspect the telescope and microscope
desiccant (15), inner container (14), window (13),
diagonal eyepieces and the telescope sunglass filter
screen (12) and upper container (11).
for scratches, cracks, and defective mounting.
(b) Attach studs (10) to base with pins (9).
(3) Inspect the lamp fittings for broken glass
and corroded or defective contacts.
washers (7), beveled washers (6), nuts (5) and L.H.
thread screws (4).
4-30
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