TM 11-5855-250-12&P
contains the manually operated elevation and azimuth
tank. The searchlight is equipped with a shock-mount
mechanical drive systems used for directing the
searchlight beam. The yoke is attached to the pedestal
searchlight subassembly. The shockmount assembly
through a bearing assembly which enables the
consists of three ball-socket hitches, for mounting the
searchlight to be rotated to desired azimuth. Azimuth
searchlight subassembly to the tank, and two torsion
and elevation scales, illuminated by indicator lights, have
bars which protect the searchlight subassembly from
been added for operator use. The pedestal supports the
excessive stresses during gunfire.
yoke and contains receptacles for connecting the
(2) Two mounts are used with the AN/GSS-
searchlight to the input power cables. It also contains a
14(V), as follows:
(a) the MT-3900/GSS-14(V) used with
switch and fuse to control and protect the azimuth and
elevation scale indicator lights. The pedestal is attached
the searchlight (fig. 1-3), consists of a yoke, to which the
to the baseplate, which is bolted to a tower, jeep, or
searchlight is attached, and a pedestal. The yoke is
similar vehicle.
attached to the pedestal through a bearing assembly
which enables the searchlight to turn in azimuth. The
searchlight can be tilted in elevation by loosening the
1-11. Additional Equipment Required
manual brake wheels at the end of the yoke. Azimuth
a. A 28-volt dc, 150-ampere (minimum) power
and elevation scales have been added for operator use.
source is needed for operation but is not supplied with
(b) The MT-3900A/GSS-14(V) (fig. 1-
(or as part of) the searchlight. The same power source
cable harness. The yoke supports the searchlight and
Figure 1-6. Searchlight, subassembly (cowling assembly, primary reflector, xenon lamp, and upper elbow, removed).
1-8
