3-37.
Optical
Plumb
Assembly
m o i s t e n e d with acetone or grain alcohol. Dry and
Clean the optical plumb eyepiece (5, fig. 1-1) with a
polish with lens tissue. Visually inspect the optical
soft cloth moistened with an approved cleaning
plumb device for proper functioning. Report all
solvent. Clean the eyepiece lens with a cloth
defects
to
direct
support
maintenance.
Section XV. HAND LAMP, PLUG-IN LAMP, AND BATTERY BOX ASSEMBLIES
General
window with a cloth moistened with acetone or
grain alcohol. Dry and polish with lens tissue.
The hand lamp, plug-in lamp, and battery box
Inspect the lamp housing for cracks or breaks. Plug
assemblies compose the illumination system for the
the lamp into the battery box and inspect the lamp.
theodolite. The hand lamp and plug-in lamp are
I f the lamp is defective, unscrew the lamp holder
normally packed and transported in the battery box
from the lamp housing and replace the lamp with a
assembly.
new one from the battery box. Report all other
3-39. Hand Lamp Assembly
defects
to
direct
support
maintenance.
Clean the hand lamp assembly (6, fig. 2-10) with a
3-41. Battery Box Assembly
c l o t h moistened with an approved cleaning solvent.
Clean all battery box (3, fig. 2-10) metal parts with
Wipe the cables clean with a soft cloth. Inspect the
a n approved cleaning solvent. Clean any corrosion
t u b e for defects, cracks, and breaks. Inspect the
f r o m the terminals, batteries, and contacts. Brush
hook ratchet for bends and damage. Plug the hand
all threaded surfaces free of dirt and foreign
lamp terminal into the battery box (para 2-28) and
material. Wipe dirt and foreign matter from the
inspect the lamp. If the lamp is defective, unscrew
cables, trunks, rheostat, springs, and washers.
the shade cover (7) from the end of the light, and
Inspect the cables for cracked or damaged in-
replace the lamp with a new lamp (4) from the
sulation, broken wires, and defective terminals.
b a t t e r y box (3). Report all other defects to direct
Inspect
the
reheostat
for
proper
operation
and
support
maintenance.
serviceability. Inspect the box for dents and breaks.
3-40. Plug-In Lamp Assembly
Replace defective spare lamps. Report all other
C l e a n the plug-in lamp housing with a soft cloth
defects
to
direct
support
maintenance.
moistened with an approved cleaning solvent.
C l e a n the cable with a soft cloth. Clean the lamp
Section
XVI.
ACCESSORY
CASE
AND
ACCESSORIES
solvent.
Brush the accessory case with a stiff
3-42. General
b r i s t l e d brush. Clean the zipper teeth thoroughly.
T h e accessory case (1, fig. 2-7) provided with this
Wipe the dirt and foreign matter from the
t h e o d o l i t e is a canvas case containing the diagonal
p u b l i c a t i o n s case, theodolite cover, and camel hair
eyepiece
(10),
sunglasses
(12),
lubricant
(14),
b r u s h handle with a soft cloth moistened in water
t h e o d o l i t e cover (2), chamois skin (3), publications
and dry thoroughly. Inspect the accessory case,
c a s e , adjusting pins (4), screwdrivers (8), compass
theodolite cover, and publications case for cuts,
(7), and camel hair brush (5).
tears, and damaged seams. Replace all defective
items.
Clean all metal parts with an approved cleaning
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