C4, TM 9-2350-230-12
TABLE 2-16. BORESIGHTING WHITE LIGHT/INFRARED SEARCHLIGHT
STEP
PROCEDURE
WARNING:
DO NOT look into searchlight beams. Serious eye damage can result.
1
CAUTION:
DO NOT operate searchlight without engine running.
2
Select a target (preferably a boresight panel) as near 1, 200 meters as possible.
3
With all superelevation removed from fire control system, lay aiming cross of M119
telescope on center of boresight panel. Center the bubble on the elevation quadrant
4
Apply plus 5 mils on elevation 'quadrant and manually elevate gun until bubble is
centered.
5
Place searchlight main control box LOCAL/REMOTE switch (10, fig. 2-36) in
LOCAL position.
NOTE.
When switch is in REMOTE position. commander has control of searchlight
with his remote control box.
6
Turn BEAM SPREAD/COMPACT switch (7, fig. 2-36) to COMPACT position.
7
LAMP ON light (8, fig. 2-36) and searchlight will ignite.
8
Loosen 4 screws (2, fig. 2-35) securing searchlight to support.
9
Align searchlight until maximum intensity of searchlight beam is horizontally on
center of boresight panel and tighten 4 screws.
10
11
Turn adjusting screw (6, fig. 2-35) and raise or lower searchlight until beam is
vertically on boresight panel Tighten 2 jam nuts (4, fig. 2-35).
12
Tighten Jack screw (8, fig. 2-35) firmly against gun shield and lock with jam nut
13
Turn VISIBLE/INFRARED/OFF switch to OFF position.
CAUTION:
DO NOT shut VEHICLE MASTER switch off until after searchlight
thermostatically controlled blower motor has stopped.
ALTERNATE METHOD (REFER TO FIG. 2-37)
14
Position the tank so the searchlight is facing a vertical surface such as a wall at a
distance of approximately 10 meters (30 feet).
15
Place a cross on the vertical surface approximately 7 feet from the ground and a
second cross 16-1/2 inches above, and 20-41/64 inches left of the first cross.
16
Remove all superelevation from fire control system and place boresight thread on
muzzle end of gun tube and boresight main gun on lower cross (table 2-9).
2-61