TM 5-6675-270-15
wipe off all excess oil. Inspect for a cracked or
4-33. Cleaning, Inspection, and
broken mirror.
Replacement
a. Clean the metal parts with a soft cloth
assembly.
moistened with a cleaning solvent. If dusty, clean
the mirror with a camel-hair brush or, if foggy,
with a chamois cloth.
b. Inspect the hinge action for stiff or loose
mirror assembly by grouping with thumb and two
movement. It should remain in the position where
fingers and pushing inward with a twisting
placed. Inspect the push-fit mirror mounting for
motion.
too tight or too loose fit, distortion, and other
damage. Oil the hinge sparingly if needed, and
Section XII. MAINTENANCE OF TELESCOPE LEVEL ASSEMBLY
NOTE
4-37. Cleaning, Inspection and
The telescope level assembly is applicable to the
Replacement
models T16-MIL68 and T16-68DEG only.
a. Clean the metal parts with a cloth moistened
with a cleaning solvent. Clean the prism and vial
window with a soft, clean cloth moistened with
The telescope level provides a means for position-
grain alcohol or acetone.
ing the telescope in a true horizontal position.
b. Inspect the vial and prism for cracks, chips,
The telescope level reading prism can be rotated
and etching.
so that the level bubble can be seen when the
telescope is reversed 180.
c. Replace a defective telescope level assembly.
Refer to figure 4-6 and remove the telescope level
Refer to figure 4-6 and install the telescope level
assembly.
assembly.
Section XlIl.
MAINTENANCE OF TRIPOD ASSEMBLY
wear, and damage. Inspect the clamps, shoes,
cover fixing plate, and battery box bracket for
CAUTION
cracks, bends, and wear. Inspect the accessory
case and belt for cuts, wear, and ripped seams.
left-hand threads.
Inspect the wooden legs for cracks, splits, splint-
ers, wear, and warping.
assembly.
c. Remove all burs. Straighten minor dents
and bends. Refer to TM 10-269 for repairs to the
440. Cleaning, Inspection, Repair, and
accessory case. Sandpaper and varnish the
Replacement
wooden legs if the protective coating is worn or
a. Clean all metal parts with a cleaning solvent.
damaged.
Clean the wooden parts with a soft cloth moist-
d. Replace unserviceable parts with serviceable
ened with water and dry thoroughly. Clean the
ones.
belt with a suitable leather cleaner.
b. Inspect the tripod leg housings and cover
for burs, cracks, and wear. Inspect the head and
bridge for bends, burs, cracks, breaks, scratches,