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TM5-4120-376-14
4-17. EVAPORATOR FAN MOTOR AND HOUSING ASSEMBLY/Inspect, Service, Test, Repair,
Replace (Cont)
LOCATION/ITEM
Inspection:
1. Inspect strap, evaporator fan housing, inlet ring and flange for damage and replace if
damaged.
2. Spin the rotor and listen for bearing noise indicating rough operation.
3. If roughness exists, when turning the shaft backward and forward by hand, replace
bearings.
4. Grip the rotor shaft and attempt to pull it in and out checking for end play.
5. If end play exists, replace load springs and shims.
6. Inspect impeller for damage and replace if necessary.
Service:
WARNING
Dry cleaning solvent, P-D-680 or P-S-661, used to clean parts is potentially
dangerous to personnel and property. Avoid repeated and prolonged skin
contactt. Do not use near open flame or excessive heat. Flash point of solvent
is 100°F (38°C).
1. Brush off loose dirt or foreign matter from impeller.
2. Wipe impeller with a cloth dampened with dry cleaning solvent (Table D-1, Item 3).
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