TM 9-4120-370-14
TO 35E9-229-1
NOTE
If inlet bell does not require removal, skip steps (10) and (11).
(10) Using screwdriver, remove four screws and flat washers from inlet bell,
(11) Remove inlet bell,
(12) Go back to step (1) and remove the other fan.
Inspection
b.
(1) Check fans for dents, bent or loose fan blades, and that hub is securely attached. Replace if damaged,
(2) Check inlet bell for dents or any distortion that would cause interference with fans. Replace if damaged.
(3) lf a motor problem is suspected, inspector test motors in accordance with paragraph 4-59,
c.
Clean
(1) Use a clean dry cloth and a soft brush to remove dirt from fans.
(2) If fans and inlet bells are excessively dirty, wash them with a mild detergent and water solution.
Installation
d.
NOTE
If inlet bell was not removed, skip step (l).
(1) Using screwdriver, secure evaporator inlet bell with four screws and flat washers.
(2) Check to see that key is in place on motor shaft
CAUT ION
The fans are not identical parts. They rotate in opposite directions. Take care that
correct fan is used. See Figure 4-80 for rotation and check rotation arrow on
fan.
(3) Slip fan all the way onto motor shaft and temporarily tighten two setscrews.
(4) Place motor and fan assembly into unit and aline mounting holes.
(5) Using wrench, secure motor and fan assembly with tour cap screws, lock washers, and flat washers.
(6) Loosen setscrews and slip fan down so that there is 0,06 to 0.08 (0,15 to 0,20 cm) clearance between fan
and inlet bell.
(7) Using allen wrench, tighten two setscrews,
(8) Check that fan is centered on inlet bell. If it is not, loosen mounting hardware and adjust as necessary.
Retighten mounting hardware,