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 Figure 5-112. Typical centrifugal blower assembly.
(1) Loosen setscrew securing fan hub to
b.
Removal.
motor shaft.
(1) Tag
and
disconnect
electrical
(2) Remove motor mounting capscrews
connections.
securing motor to the motor support.
(2) Remove duct connecting hardware (fig.
(3) Move motor carefully away from the
5112) from inlet and outlet ducts at blower housing.
housing until fan hub frees motor shaft, then lift fan from the
(3) Loosen locknuts and nuts securing
housing. Fully withdraw motor from the motor support and
housing mounting brackets, then use a lifting device to
place it on a workbench.
remove motor and housing from the frame.
c. Disassembly.
5-156
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