TM 5-6675-270-15
Preventive
Maintemznce
Checks
and
Services
Interval
BBefore operation
AAfter operation
MMonthly
DDuring operation
WWeekly
QQuarterly
Org.
Operator
--
Daily
Reference
Procedure
Item to be inspected
M
Q
W
D
A
--
--
--
--
Inspect
pack
for
serviceable
condi-
X
Canvas
Field
Pack
X
tion.
Inspect
eyepieces,
adjusting
and
Theodolite
X
X
clamping
knobs,
and
adjusting
screws
for
proper
operation.
In-
spect
U-frame
for
paint
chips
and
dirt.
Clean
frame
with
lint-
free
cloth,
if
necessary.
Clean
prisms
with
a
lint-free
cloth.
Inspect
lenses,
level
vials,
and
mirrors
for
dryness,
cleanliness,
and
serviceable
condition.
Clean
lenses,
vials,
and
mirrors.
Clean
sunglasses
with
a
lint-free
cloth.
&
1-6.
Inspect
compass
for
serviceable
Compass
Assembly
X
X
condition.
Clean
with
a
lint-free
cloth.
Inspect
case
for
serviceability
and
X
Accessory
Case
X
presence
of
components.
Inspect
case
for
serviceability.
X
Carrying
Case
X
Check
dessicant
for
proper
color
(blue).
Dehydrate
or
replace
dessicant
of
any
other
color.
Inspect
tripod
for
serviceable
con-
X
X
Tripod
dition.
Inspect
tripod
accessory
case
for
tears
and
other
damage.
Check
tripod
accessory
case
for
presence
of
components.
Inspect
box
for
presence
of
compo-
Battery
Box
X
X
nents.
Inspect
batteries
and
wir-
ing
for
serviceable
condition.
Check
rheostat
for
tight
and
clean
connections
and
for
proper
operation.
Inspect
light
for
serviceable
condi-
X
X
Hand
Light
tion
and
proper
operation.
Inspect
the
controls
and
instru-
X
X
Controls
and
ments
for
serviceable
condition.
Instruments
Check
for
proper
operation.
Note.
During operation observe for proper func-
tion, alinement, adjustment, and calibra-
tion.
--
--
--
--
Section V. TROUBLESHOOTING
4-11. General
4-12. Troubleshooting
This section provides information useful in
Malfunctions which may occur are listed in table
diagnosing and correcting unsatisfactory opera-
42. Each malfunction slated is followed by a list
tion or failure of the theodolite and its com-
of probable causes of the trouble. The corrective
ponents.
action recommended is described opposite the
probable cause.
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