TM 11-5895-846-14
Do not lock the pin.
(8) Set each of the ground pads by standing on
(2) Mate the other end of the center base
them and jumping slightly. Depending on the type of soil,
frame member with the front Y casting. Move the front
complete setting of the pads may have to await
pad along the sighting line as required to accomplish this
anchoring installation. The level may be off now but this
mating. Insert the assembly pin and lock the pin. Also
will be corrected in a final adjustment procedure.
e. Installation of Center Section.
lock the pin inserted in step (1) above.
(3) Recheck that the boresight alinement is
WARNING
correct. This can be checked from the front sighting
Handle the center section with care.
stake by observing that the V formed by the front and
Use four persons to install it. Failure
rear legs are in coincidence. Move only the front ground
to do so could result in injury to
pad to accomplish this.
personnel because of its bulk and
(4) Install the front base frame members by
weight and/or damage to the
mating the bushing end with the front Y casting and
equipment because of its delicate
inserting the assembly pins. Do not lock the pins.
construction.
(5) Move the side ground pads, as necessary,
(1) During the unstowing procedure, the
to engage the pad mounting balls with the Y castings on
center section (on its carriage assembly) was removed
the front base frame members.
from the shelter and placed in front of the antenna
(6) Mate each of the side base frame
location.
members with the rear Y casting and insert the assembly
CAUTION
pins. Do not lock pins.
Remove the feed tube from the
(7) Move the side ground pins, as necessary,
carriage assembly storage container
and mate the Y castings with the side base frame
only when it is ready to be installed.
members.
Do not uncoil the mounted electronic
Insert the assembly pins. Lock all assembly pins
cables at this time.
including those installed in steps (4) and (6) above.
(2) Unlock and open the pillow blocks on the
d. Installation of Side Leg Assemblies (fig. 2-7).
(1) Release the clamp-type handle on one of
the pillow blocks on the carriage assembly (fig. 2-5,
the side leg assemblies (fig. 2-9). This will allow the leg
sheet 1). Release and remove the two quick-release
to be extended or retracted.
pins at the bottom of the center section on the base of
(2) Attach the leg to the ball joint on the left
the carriage assembly.
pillow block and the left side ground pad Y casting.
(3) Carefully lift the center section from the
Orient the leg with the handle section upward toward the
carriage assembly and set it into the position on the
pillow block.
antenna support structure pillow blocks.
(4) Allow the center section to rotate
assembly upper cross member and move the leg in and
downward and come to rest on the leg assembly.
out until a level indication is obtained.
(5) Close and lock the pillow blocks on the
NOTE
It may be necessary to stand on the
(6) Remove the handle bars from the support
left base frame member to prevent
handles and stow them on the base of the carriage
any
movement
during
this
adjustment.
(7) Remove the support handles from the
(4) Close the clamp-type handle on the left
center section and then pin the extender handles in a
front leg assembly to lock the entire framework in
closed position.
position.
(8) Remove the carriage assembly from the
(5) Release the clamp type handle on the
installation area. (Unstow the feed tube only when it is
other side leg assembly.
ready to be installed.) (9) On the center section gimbal
(6) Attach the leg to the ball joint on the right
loosen the straps which secure the mounted electronics
pillow block and the right side ground pad Y casting.
cables. Uncoil these cables and dress them over the
Orient the leg with the handle section upward toward the
upper cross member of the rear leg assembly (but not on
pillow block.
the level glass).
(7) Stand on the right side Y casting and
(10) As much as possible, dress the cables
close the clamp-type handle on the leg.
toward the left side of the cross member so that they will
NOTE
break out to the left of the drive ring after is installed.
After performing step (7) above, the
f.
Installation of Elevation Drive Ring and
structure is free standing and will not
Actuators (fig. 2-8 and 2-9).
require support.
2-18