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TM5-4120-387-14
(2) Remove ring.
(3) With hex head wrench, loosen setscrew in fan hub.
(4) Carefully pull evaporator fan off of motor shaft.
(5) Remove shaft key and shims (if applicable) and tape in place so that
they will not be lost.
b.
Inspection
(1) Check fan for dents, bent or
attached.
Replace if damaged.
(2) Check inlet ring for dents or
oose fan blades, and that hub is securely
any distortion that would cause
interference with fan.
Replace if damaged.
(3) If a motor problem is suspected, inspect or test motor in accordance
with paragraph 4-60.
c.
Clean
(1) Use a clean dry cloth and a soft brush to remove dirt from fan.
(2) If fan and inlet bell are excessively dirty, wash therewith a mild
detergent and water solution.
d.
Installation
(1) Check that shaft key is in place. If it is taped in place, remove tape.
(2) Aline keyway and shaft key and slip fan onto motor shaft.
(3) Aline fan hub flush with end of motor shaft.
(4) With torque wrench, tighten two setscrews to a torque of 82 inch-pounds.
(5) With screw driver, secure inlet ring with six screws and washers.
(6) Spin fan by hand and check for any interference between fan and ring.
Adjust fan if necessary.
Follow-on procedures: 1.
Install air filter.
(See para 4-25.)
2.
Install evaporator intake grille assembly.
(See para
4-19.)
4-140
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