2.12.4 Top Panel Assembly Maintenance, Model 609-C.
(Continued)
2.12.4.3 Inspection.
a.
Inspect top panel assembly (4), air duct crossover (8), air duct entry
assembly (9), and air duct exit assembly (10) for deterioration or damage of
insulation material on inner surfaces, corrosion, bends, or cracks.
b.
Inspect air duct crossover (8) and air duct assemblies (9 and 10) for
obstructions which restrict air flow through the assembly.
c .
Inspect exhaust cover assembly (2) for corrosion, bends, cracks, and smooth
operation of hinge (11).
2.12.4.4 Repair.
a.
Replace damaged or deteriorated insulation material on inner surface of top
panel assembly (4), air duct crossover (8), air duct entry assembly (9), and
air duct exit assembly (10).
Refer to Appendix D to manufacture new
insulation.
b.
Replace top panel assembly (4), air duct crossover (8), air duct entry
assembly (9), air duct exit assembly (10), and exhaust door cover assembly (2)
if corrosion or damage, which does not permit proper mounting or securing of
top panel, is present.
c .
Replace exhaust cover assembly (2) and securing arm (12) if damaged.
2.12.4.5 Assembly.
a.
Install four screws (7) into air duct crossover (8), air duct entry assembly
(9), and air duct exit assembly (10).
b.
Position air duct entry assembly (9) and air duct exit assembly (10) on top
panel assembly (4).
c .
Install fifteen screws (6) and nuts (5).
d.
Position hinge spacer (3) and exhaust cover assembly (2) on top panel
assembly (4).
e .
Install two screws (1).
2.12.4.6 Installation.
Two people are required to lift the top panel assembly onto the enclosure.
Failure to obey this warning may result in personal injury or damage to the
equipment.
a .
Position top panel assembly (Figure 2-14, 6) on enclosure (7).
Ensure screw and nut combinations are installed in locations marked during
removal.
b .
Install screws (4) and nuts (5), at locations marked during removal.
c .
Lift exhaust cover assembly (3) and install flat washer (2) and new lock
nut (1).
2-54
TM 10-4320-344-24
