TM 10-4610-232-12
Refer to LO 10-4610-232-12 and lubricate the vent fan.
a. Refer to Figure 4-79 and remove the vent fan as follows:
(1)
(2)
(3)
(4)
Turn the fan switch on switch panel No. 2 to the OFF position.
Disconnect cable (17) at switch panel No. 2.
Remove screw (1) and handle (2).
Remove four capscrews (3), Iockwashers (4) and washers (5) and remove the fan assembly from the ROWPU
wall as a unit.
a. Remove two screws(6) and box cover(7). This item consists of two parts, a box and a cover, Disconnect wires from
cable (17) by removing twine and electrical tape and removing screws (8), nuts (9) and Iockwashers(10) which connect
cable (17) to motor (28) cable. The motor cable is part of the motor.
b. Remove groundcapscrew(11). Unscrew nut(13) and slide nut (13), bushing(14) and retainer (15) back on cable
(17). Remove conduit nut(12) and pull cable (17) out of box(7). Slide nut (13), bushing (14) and retainer off cable
(17). Sealing washer (16) will now be free.
c. Remove conduit nut (18), clamp(19) and sealing washer (20) and slide motor (28) cable out of box (7).
d. Remove four capscrews (21), washers (22), and two nuts (23) and washers (24) and remove fan guard (25). Motor
and fan (28 and 27) are now free.
e. Remove setscrew (26) and remove fan (27) from motor (28). Panel (29) is now free.
a. Replace motor if faulty.
b. Replace faulty cable (17).
c. Replace loose or damaged ring tongue connectors (para. 4-10).
a. Assemble fan (27) on motor (28) shaft and secure with setscrew (26).
b. Install motor (28) on fan guard (25) and secure with nuts (23) and washers (24).
c. Install the fan guard/motor assembly on panel (29) and secure with capscrews (21) and washers (22).
d. Install sealing ring (20) on clamp (19) and insert in box (7). Secure in position with conduit nut (18). Insert motor
(28) cable into box (7).
e. Slide nut (1 3), bushing (14) and retainer(15) on cable (17) and place sealing washer(16) on retainer (1 5). Insert
cable (17) into box(7), secure with conduitriut(12) and connect the wires as shown on the insert, using capscrews (8),
nuts (9) and lockwashers (10). Varnish all connections. Tape all connections and tie with twine as shown in Figure 4-72.
Connect the ground lead using capscrew(11), which also secures box (7) to panel (29).
f. Place cover portion of cover/box (7) on box and secure with screws (6).
g. Place the assembled unit on the ROWPU wall and secure in position with capscrews (3), Iockwashers (4) and
washers (5).
h. Install handle (2) and secure in position with screw (1).
i. Connect cable (17) to switch panel No. 2.
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