TM 9-4120-395-14&P
4-44. OUTDOOR FAN.
This task covers:
a. Inspection
b. Service
INITIAL SETUP:
Tools:
Tool Kit, service, refrigeration unit
Material
Rags (Appendix F, Item 7)
Equipment Conditions:
Power off at power source.
Both side door assemblies removed. See para 4-19.
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 (1, Figure 4-40) for bent or missing blades. Replace any damaged outdoor fan.
(2)
Install both side door assemblies. See para 4-19.
b.
Service.
(1)
(2)
Install both side door assemblies. See para 4-19.
c.
Removal.
(1)
Remove the nut (2, Figure 4-40) on the accumulator stud (3) at the right top of the compartment between
the venturi panel (4) and the lower back panel (See Figure 1-1). Push the stud up and flush with the
upper panel.
(2)
Remove the 10 screws (5) securing the venturi panel (4).
(3)
Mark the position of the outside fan motor bracket (6) on the outdoor fan motor (7).
(4)
Loosen the nut and bolt (8) that hold the outdoor fan motor in place in the outdoor fan motor bracket and
push the motor towards the outdoor coil (9) 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 (10) that secure the fan (1) to
the outdoor fan motor shaft (11).
CAUTION
Take extreme care when removing the fan. The fins on the outdoor coil and the
fan blades can be easily damaged.
(6) Carefully slide the fan off the outdoor fan motor shaft and out of the air conditioner.
4-75