TM 5-4520-208-15
b. Cleaning, Inspection, and Repair.
(3) Check operation of the air control
(1) Clean all parts with an approved
damper. Damper must not bind or
have any restriction of movement. If
cleaning solvent and dry thoroughly.
(2) Inspect air control (15, fig. 48), and
there is binding or restriction, correct
cause or replace air control.
duct adapter (12), and parts for
breaks, cracks, bends, dents, damaged
c. Installation.
threads, or other damage. Straighten
(1) Install air control (para 151).
minor bends or dents or replace darn-
(2) Install duct adapter assembly (pars
aged parts.
99).
Section VI. HEAT EXCHANGER
c. Cleaning, Inspection, and Repair.
164. General
(1) Clean interior of heat exchanger (17,
a. The heat exchanger is a cylindrical drum
containing circularly nested parallel tubes hav-
pressed air. Clean the exterior surface
ing airfoil cross sections.
with a clean cloth and an approved
b. A drain tube is provided at the outlet
cleaning solvent.
end to drain accumulations of fuel or mois-
(2) Inspect heat exchanger for bends,
ture in the heat exchanger.
dents, cracks, or other damage.
Straighten bent tubes. Replace heat
165. Heat Exchanger
exchanger if damaged.
d. Assembly and lnstallation. Install drain
move the heat exchanger.
tube (16, fig. 48) in heat exchanger (17). Re
b. Disassembly. Remove drain tube (16, fig.
fer to paragraph 152 and install the heat ex-
48) from outlet end of heat exchanger (17).
changer.
Section VII. CASING, AIR STRAIGHTENING VANE, AND
SKID BASE
166. Casing
install outer casing.
a protective covering around the heat ex-
167. Air Straightening Vane
changer.
a. General. The air straightening vane (19,
move the casing.
c. Cleaning, Inspection, and Repair.
of the fan.
(1) Clean the casing (29, fig. 49), side
panel (41 and 50), and bulkheads
move the air straightening vane.
(16 and 34), with an approved clean-
c. Cleaning, Inspection, and Repair.
ing solvent and dry thoroughly.
(1) Clean air straightening vane (19, fig.
(2) Inspect the casing, panels, and bulk-
heads for breaks, cracks, dents,
dry thoroughly.
(2) Inspect air straightening vane for
chipped paint, or other damage. Check
weld nuts for damaged threads and
bends. breaks, or other damage.
secure attachment. Straighten minor
Straighten minor bends. Replace vane
dents and weld small breaks and
if damaged.
cracks Paint exposed areas. Refer to
TM 9-213. Replace damaged parts.
stall air straightening vane.
103
