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(1) Refer to figure 4-13 and install bushings
(3) Install plate and motor in air conditioner
(8) in mounting plate (9) if they were removed.
and slide fan impeller (fig. 4-12) on motor shaft.
(2) Place a washer (7) over each bushing and
Install four screws and flat washers.
set motor (6) on washers. Install four screws (3),
(4) Connect motor electrical connector.
washers (5), and lock washers (4). Install collar (2)
(5) Refer to paragraph 4-21 and install
on motor shaft and install setscrew (1).
housing covers.
Section XIII. FAN MOTOR SWITCHES AND CAPACITORS
4-41. Fan Motor Speed Control Switches
a. General. The evaporator fan motor speed
control switch is a toggle switch which is part of the
control module. Replacement instructions for this
switch are included with the control module. The
condenser fan motor speed control thermostatic
switch, located on the rear wall of the housing,
automatically controls the fan motor speed. The
switch is normally open and closes on temperature
rise between 95° F and 105° F. When the switch
contacts close, the condenser fan relay coil is
energized and the relay shifts the fan motor circuit
from low-speed to high-speed.
b. Testing. Test the switch and connector
assembly in the air conditioner as follows:
(1) Refer to paragraph 4-21 and remove rear
top cover.
(2) Disconnect electrical connector located
just below condenser motor electrical connector
(fig. 4-12).
(3) Check for continuity between terminals of
connector. There should be no continuity between
terminals when temperature is below 95° F. If a
source of heated air is available, check for closing of
contacts and continuity between terminals at 95° F
to 105° F.
(4) If switch and connector assembly do not
meet requirements, check wiring and repair
damaged wiring or replace switch.
c. Removal. With top cover removed and
electrical connector disconnected, proceed as
follows :
( 1 ) Refer to figure 4-15 and remove two screws
and lock washers. Remove switch and connector
assembly.
(2) Disconnect switch leads from connector.
4-24
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