TM 9-4120-385-14
b. INSPECTION.
Return Air Intake Grille/Discharge Grille. Check for bent, broken, missing, or frozen
blades. Repair blades as necessary.
WARNING
Dry cleaning solvent used to clean parts is potentially dangerous to
personnel and property.
Do not use near open flame or excessive heat. Flash point of
solvent is 100 F to 138 F (38 C to 59 C).
c.
REPAIR.
Return Air Intake Grille/Discharge Grille.
1. Straighten bent blades. If a blade is beyond repair, replace the grille.
WARNING
Use compressed air to 30 psi (1.36 kg) or less. Never use
compressed air to clean clothing or parts of the body. Do not point
compressed air at yourself or others. Serious injury or death could
result.
2. Frozen blades maybe freed by using a solvent to break down any dirt
accumulation. The affected blade(s) should then be operated several times. Using low pressure
air, remove remaining solvent.
d. REPLACEMENT.
Return Air Intake Grille/Discharge Grille.
1. Align grilles (4 and 5) to corresponding holes in casing.
2. Secure grilles (4 and 5) with four screws (1), lockwashers (2), and flat washers (3).
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