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AD/BELL 407/25 Amdt 1 - Tail Rotor Drive Shaft Bearings
2. Oil Cooler Blower Shaft Bearings:2. Oil Cooler Blower Shaft Bearings:
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2. Oil Cooler Blower Shaft Bearings:
For helicopters S/N 53000 through 53579:
Replace oil cooler blower shaft bearings in accordance with BHTC ASB 407-04-63 Revision A.
b. Inspect oil cooler blower shaft bearings in accordance with BHT ASB 407- 04-63 Revision A.
c. Lubricate oil cooler blower shaft bearings in accordance with BHTC ASB 407-04-63 Revision A.
d. Replace lubrication-warning decal in accordance with BHTC ASB 407-04- 63 Revision A.