TM 10-4320-307-24
3-25
FAN HUB AND BRACKET REPAIR (CONT).
CLEANING/INSPECTION:
Dry cleaning solvent is potentially dangerous. Avoid repeated and prolonged
breathing of vapors and skin contact with the liquid. Do not use near open flame,
arcing equipment, or other ignition source. Always wear eye protection and
protective clothing.
Death or serious injury could occur if compressed air is directed against the skin.
Do not use compressed air for cleaning or drying unless the pressure is/has been
reduced to 30 psi (2.11 kgcm2) or less. When working with compressed air always
use chip guards, eye protection, and other personal protective equipment.
Do not use compressed air on bearings.
1.
Clean all parts using a soft bristle brush and dry cleaning solvent. Dry with compressed air.
2.
Inspect roller bearings (1 and 2) for freedom of
movement, scored or cracked races or worn rollers.
If any part of bearing is damaged replace bearing.
3.
Inspect bearing spacers (3 and 4) for cracks or
distortion. Replace spacers if damaged.
4.
Inspect shaft (5) for scoring, wear, or other damage.
Replace shaft if damaged.
5.
Inspect fan pulley (6) for cracks or gouges. Check
pulley grooves for wear or damage. Replace pulley if
damaged.
6.
Inspect fan pilot spacer (7) for cracks. Replace
spacer if damaged.
7.
Inspect fan hub bracket (8) for cracks or other
damage.
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