TM 9-1240-401-34&P
b. Disassembly
1
Remove four machine screws (23), four lockwash-
ers (24) and identification plates (25 and 26) from
2
Remove two machine screws (27) and protective
cap (28) from overlay assembly (29).
Pull wire (30) with lamp base through to the front of
3
the overlay assembly (29).
4
Using 11/16 and 45/64 inch tubular spanner wrench,
remove optical retaining ring (31) and overlay
assembly (29) from counter box assembly (20).
5
Using 1/2 and 33/64 inch tubular spanner wrench,
remove externally threaded ring (32), electrical lead
(33), and lens (34) from counter box assembly (20).
6
Remove machine screw (35), lockwasher (36), and
electrical connector cover (37). Discard lockwasher.
7
Using 11/16 and 45/64 inch tubular spanner wrench,
remove externally threaded ring (38), electrical lead
(39), and lens (40).
c. Repair
1
Remove corrosion, grease, and dirt from all parts.
Refer to TM 9-254 for cleaning instructions.
2
Visually inspect for missing or damaged parts.
3
Repair or replace parts in accordance with authorized parts listed in appendix D.
d. Assembly
1
Install lens (40) and electrical lead (39) with brass portion facing outward.
2
Apply adhesive to threads of externally threaded ring (38) and install in counter box assembly (20), using 11/16 and
45/64 inch tubular spanner wrench.
3
Install electrical connector cover (37), new lockwasher (36), and screw (35) to counter box assembly (20).
4
Install lens (34) and electrical lead (33) to counter box assembly (20).
5
Using 1/2 and 33/64 inch tubular spanner wrench, install externally threaded ring (32) to overlay assembly (29) and
stake with adhesive.
6
Pull wire (30) with lamp base through to the front of overlay assembly (29) and position onto counterbox assembly (20).
Install retaining ring (31) to overlay assembly (29).
7
Install identification plates (25 and 26), using four new lockwashers (24), and four machine screws (23) with adhesive
applied to screw threads.
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