TM 56675-250-10
2-9. PREPARATION FOR MOVEMENT - Continued
SETTING GYROSCOPIC REFERENCE UNIT AND TRIPOD
a.
Loosen leg clamp (1) on each leg of tripod
(2).
b.
Extend each leg to about 1/4 inch (.64 cm)
from full extension.
c.
Tighten clamps (1) to secure adjustable
legs.
The legs of the tripod assembly are hinge-
mounted and can swing beyond a normal
standing position. Exercise care to avoid
spreading the legs excessively and knocking
the GRU against the ground surface.
d.
Spread the tripod legs (1, 2 and 3) outward
to obtain a level condition while standing
the unit (4) in a vertical postition over a
selected location.
NOTE
Perform preventive maintenance checks
and services as specified in PMCS chart.
AUXILIARY TRIPOD
Make sure that the auxiliary tripod is leveled
when setting up the equipment. Binding of
the SIAGL tripod legs may occur during
adjustment if the auxiliary tripod is not Iev-
eled.
2-65
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