TM 9-4120-395-14&P
4-45. OUTDOOR FAN MOTOR.
This task covers:
a. Inspection
b. Testing
c. Removal
d. Installation
INITIAL SETUP:
Tools:
Tool Kit, service, refrigeration unit
Equipment Conditions:
Power off at power source.
Both side door assemblies removed. See para 4--19.
Both front door assemblies removed. See para 4-17.
Control box cover removed. See para 4-23.
General Safety Instructions:
Disconnect input power to the unit before performing any internal maintenance.
Voltages used can kill. Shutting the unit off at the thermostat does not
disconnect unit power.
a.
Inspection.
(1)
Inspect outdoor fan motor (1, Figure 4-41). Repair/replace loose, damaged, or missing wires and hard
ware.
(2)
Install both side door assemblies. See para 4-19.
b.
Testing.
(1) Use multimeter to check the outdoor fan motor (1, Figure 4-41) wiring. A direct short to ground or an open
will require replacement of the motor.
(2)
Install both side door assemblies. See para 4-19.
c.
Removal.
(1)
Remove the nut (2, Figure 4-41) on the accumulator stud (3) at the right top of the compartment between
the venturi panel (4) and the lower back panel. Push the stud up and flush with the upper panel.
(2)
Remove the ten screws (5) securing the venturi panel.
(3)
Mark the position of the outdoor fan motor (1) in the outdoor fan motor bracket (6).
(4)
Loosen the nut and bolt (7) that hold the outdoor fan motor in place in the outdoor fan motor bracket and
push the motor towards the outdoor coil (8) as you are pulling back the venturi panel right side.
(5)
Reach in the right side door assembly and loosen the two allen set screws (9) that secure the fan (10) to
the outdoor fan motor shaft (11).
CAUTION
The outdoor coil fins and the fan blades can easily be damaged. Take care not to bend them.
(6)
Carefully slide the fan off the outdoor fan motor shaft and carefully pull it out between the outdoor coil (8)
and the venturi panel (4).
4-77
