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  TM 3-6665-302-34
assembly (para 3-36a through f and i through
3-54. Horn and Gasket
m).
(2) Pull out on cap (36).
a. Removal.
(3) Unscrew nut (35) and remove cap (36)
(1) Remove screws (8) and lockwashers
and gasket (34).
(9).
(4) Unsolder wires from heater assembly
(2) Lift horn (10) and gasket (11) from
33).
top subassembly (13).
(5) Remove heater assembly (33) and pre-
(3) Tag and unsolder wires from horn ter-
formed packing (32 ).
minals.
b. Installation.
b. Installation.
(1) Install preformed packing (32) on
(1) Apply silicone adhesive (item 10, table
heater assembly (33).
11 ) to panel-side of gasket (11).
(2) Insert heater assembly (33) through
(2) Position gasket (11 ) on top subassem-
top assembly (13) from the inside.
bly (13).
(3) Using figure 3-2 as a guide, solder wires
(3) Attach and solder wires to terminals
to terminals of heater assembly (33). Coat solder
on horn (10).
connections with sealant from coating kit (item
(4) Coat solder connections with sealant
from coating kit (item 6, table 11 ).
(4) Install gasket (34), cap (36), and nut
(5) Secure horn (10) with screws (8) and
(35) unthreaded shaft of heater assembly (33).
lockwashers (9).
(5) Tighten nut (35) and install cap (36)
on AIR OUTLET port.
355. Top Subassembly
(6) Install chassis assembly in case top as-
a. Disassembly.
sembly (para 3-37a through f).
(1) Remove chassis assembly from case to
assembly (para 336a through f and i through
3-53. Housing Assembly and Boot
m).
(2) Remove handle (para 3-16a).
a. Removal.
(3) Remove air filter plug and preformed
(1) Remove chassis assembly from case top
packing (para 329a).
assembly (para 3-36a through ~ and i through
m).
(4) Remove air inlet assembly (para 3-
20a).
(2) Loosen setscrews (13A, fig. 3-22) and
remove knob (14).
(5) Remove air inlet heater assembly (para
(3) Unsolder wires from underside of hous-
ing assembly (26).
(6) Remove pressure ring (para 3-22a).
(4) Unscrew and remove boot (15).
(7) Remove connector cover (para 3-45a).
(5) Remove housing assembly (26).
(8) Remove meter and gasket (para 3-
46a).
b. Installation.
(9) Remove identification plate (para 3-
(1) Position housing assembly (26) in top
47a).
case assembly (13) and secure with boot (15).
(10) Remove knobs, boots, and plunger
(2) Replace knob (14). Coat setscrews
(13A) with sealing compound (item 3, table 1-1)
(11 ) Remove REMOTE binding posts (para
and secure knob (14) on shaft.
(3) Using figure 3-2 as a guide, connect
(12) Remove thermostatic switch (para
and solder three wires to terminals of resistor
3-50a).
(4) Install chassis assembly in case top as-
(13) Remove 24 VDC INPUT connector.
sembly (para 3-37a through i).
and gasket ( para 3-51a).
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