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Figure 1. Searchlight Unit and Motor Removal and Installation		Up
TB-1-1520-238-20-123 Aircraft Inspection Criteria for Searchlight Assembly AH-64 Aircraft P/N 7-211B12031 NSN 6220-01-160-3527 Manual		Next
Supply/Parts and Disposition

TB 1--1520--238--20--123
(8) Remove terminal block (14) .
(9) Remove searchlight (1) from helicopter fuselage (2).
(10) Locate motor (15) on searchlight (1) and searchlight mounting plate (5).
NOTE
When the searchlight faces down (with the searchlight mounting plate
closest to an individual) the motor is located off center and to the right.
(11) Remove four screws (16), washers (17), hex nut (18) and searchlight mounting plate (5), from
searchlight (1).
b. Motor Components Removal. (See Figure 1.)
(1) Remove right mounting screw (19) and washer (20) from gear housing plate (21).
(2) Apply locking compound (MIL--S--22473 Grade B) to threads of mounting screw (19).
(3) Remove left mounting screw (22), hex nut (23), noise filter (24), and gear housing plate (21)
from motor (15).
NOTE
It is sometimes more efficient to apply locking compound and immediately
reinstall parts and components.
(4) Apply locking compound to threads of screw (22) and reinstall screw and hex nut (23) in
noise filter (24), gear housing plate (21), and motor (15).
c.
Motor Components Installation (MOC). (See Figure 1).
CAUTION
Care must be taken to ensure that the helical gear mates correctly with
the motor wormgear.
(1) Remove two helical gear setscrews (25) and apply locking compound to threads.
(2) Install setscrews (25) on shaft of motor (15).
(3) Ensure that helical gear set screws (25) are tight and that helical gear (26) is flush on bearing,
when moving searchlight (1).
(4) Attach terminal wires (10) to terminal block assembly (7).
(5) Apply locking compound to threads of two screws (8) and install screws and terminal cover
(6), on terminal block (14).
(6) Apply locking compound to threads of six screws (11) and install screws and lockwashers
(12) on terminal lug (13) and into terminal block (14)..
(7) Apply locking compound to threads of 14 machine screws (3); position searchlight (1) on heli-
copter fuselage (2); and install screws and washers (4) to secure searchlight (1).
(8) Perform electrical bond checks and MOC in accordance with publications listed in paragraph
13.
d. Cleaning. Excess locking compound and graphite should be removed from all parts using a clean-
ing cloth and isopropyl alcohol.
5

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