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TM 5-4320-306-24
3-9. REPLACE/REPAIR COOLING AIR BLOWER AND COOLING AIR DUCTING (Continued)
8
Check blades of bottom roller for indications that roller has been rubbing on blower jacket. Physical
damage to roller blades could indicate damaged blower jacket or bent quill shaft. Check surface of roller
and inside diameter of the bore into which the quill shaft is installed for corrosion or damage. Remove
corrosion using emery cloth or crocus cloth. Replace damaged bottom roller.
9
Check area of blower jacket into which the bottom roller is installed for physical damage or corrosion
that would indicate roller is rubbing jacket during operation.
10
Check inside diameter of blower jacket for corrosion or damage that would prevent reuse. Check inside
diameter for discoloration caused by overheated bearings. Check circlip groove for damage that would
prevent proper seating of circip during installation. Replace damaged blower jacket.
ASSEMBLY:
1
If bushing (8) was removed from quill shaft (6), press quill shaft into bushing.
2
Pack ball bearings (9) with grease. Press onto quill shaft (6) Seat against bushing (8).
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