(10) Spin the impeller by hand to check for interference. Should interference be noted, loosen setscrews and
adjust fan. Retighten setscrews and repeat this step.
(11) If the other fan was removed, go back to step (1) and install it.
Follow-on Procedure: Install fan and motor assembly. (See paragraph 4-21.)
4-24. BLOWER HOUSING
Preliminary Procedure: Remove fan and motor assembly. (See paragraph 4-21.)
(1) Check that blower housing is not damaged. Replace if it is bent, badly dented, or cracked.
(2) Check that hardware is in place and secure.
Figure 4-18. Blower Housing
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