TM 5-6675-270-15
Table
4-2.
Troubleshooting
Corrective action
Probable cause
Malfunction
Replace
tripod
head
Tripod
head
worn
or
defective.
1.
Tripod
legs
will
not
lock
in
posi-
tion.
Replace
clamp
(para
4-39).
Tripod
leg
clamp
defective.
2.
Tripod
extension
leg
play
excessive.
Replace
tribrach
assembly
Base
plate
defective.
3.
Theodolite
will
not
seat
properly
on
tripod
head.
Replace
tribrach
assembly
screws
defective.
4.
Instrument
will
not
stay
in
line.
c. Replace
tribrach
assembly
a. Circular
level
out
of
adjustment.
5.
circular
level
bubble
does
not
stay
in
center.
d. Tighten
or
replace
tripod
leg
clamp
b. T r i p o d
clamp
loose
or
defective.
Replace
tribrach
assembly
socket
defective.
6.
Light
on
vertical
and
horizontal
circles
unequal
or
absent.
Replace
tribrach
assembly
screws
defective.
7.
screws
hard
to
move
or
have
excessive
play.
MAINTENANCE OF CARRYING CASE
Section VI.
4-13. General
4-14. RemovaI
The theodolite carrying case (fig. 2-1) consists of
the hood and base assembly. It provides a safe and
2-2).
convenient means of carrying the theodolite in
b. Base. Remove the theodolite from the base
the field and serves as a dustproof and moisture-
proof container for the instrument while in
storage.
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