TM 5-6675-307-14
NOTE
you may find during the operation of the theodolite or its
If you have a malfunction which is not
components. You should perform the tests, inspections
listed in the table. notify the next higher
and corrective actions in the order listed.
level of maintenance
Table 3-2. Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
THEODOLITE
1. THEODOLITE WILL NOT SEAT PROPERLY ON TRIPOD HEAD
Step 1. Check alinement of the locking screw.
Restart locking screw.
Step 2. Check for dirty mating surfaces on the base plate and tribrach assembly.
Clean surfaces.
'2. THEODOLITE WILL NOT STAY ON LINE
Step 1. Level theodolite, plate bubble fails to center.
Adjust the plate level as follows:
a. Center circular level bubble using leveling screws.
b. Position theodolite so that plate level bubble is as close to center as possible.
c. Correct one-half of plate level bubble error with leveling screws.
d. Adjust plate level capstan nuts until other half of error is removed.
e. Turn theodolite 90 degrees and repeat Steps c and d. Continue until bubble remains
centered in all positions of the theodolite.
3. LIGHT ON CIRCLE SCALES UNEQUAL OR ABSENT
Check that illumination mirror is positioned correctly.
Reposition mirror.
Section V. MAINTENANCE OF THEODOLITE
3-7.
General
Any other maintenance procedures are to be determined
The only maintenance services authorized for the
by organizational maintenance.
operator are those which are listed in table 3-1.
3-5
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