TM 5-6675-307-14
(3) Inspect the lamp trunk for damage.
(3) Replace defective accessory case or
Check the rheostat for proper operation and damage.
insert.
4-27. Battery Case
(4) Inspect the battery box for damage.
a. General. The battery case is a metal box with a
Replace all defective parts that cannot be repaired. If
repair or replacement is beyond your capability or
handle that hooks onto the tripod (fig. 2-7).
responsibility, refer to next higher level maintenance.
The case supplies the power for illuminating the
d. Reassembly.
Refer to figure 2-6 and
theodolite during night or dark day operation.
reassemble the components in the battery case.
The case contains a hand lamp, power cable, four spare
lamps and space for four size D flashlight batteries.
A rheostat is provided to control the degree of brilliance.
A pocket is provided on the knapsack for carrying the
battery case when not in use.
b. Removal. Remove the hand lamp, batteries,
spare lamps and power cable from the battery case.
c. Cleaning and Inspection.
WARNING
Dry cleaning solvent, P-D-680, used to
clean parts is potentially dangerous to
personnel and property. Avoid repeated
and prolonged skin contact. Do not use
near open flame or excessive heat.
Flash point of solvent is 100 F. (38 C.)
138 F. (59 C.).
(1) Clean all metal parts with a cloth
dampened with an approved cleaning solvent, PD-680.
Remove all corrosion from terminals and contacts.
Clean dirt and foreign matter from lamp trunk, springs,
washers and rheostat.
(2) Inspect the cables, contacts and terminals
for damage.
Figure 4-8. Battery case, rheostat knob, removal and
installation.
4-12
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