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TM 5-4120-361-14
blocked or the valve’s power assembly is
ruptured.
The test for the power assem-
bly is listed in the following paragraph
(c).
c.
Test.
Test the power assembly by
removing the valve’s sensing bulb from
the suction bulb well (figure 4-22).
Hold the sensing bulb firmly in both
hands for two or three minutes.
The
warmth from holding the bulb should put
enough pressure on the bellows to start
the refrigerant flowing into the sys-
tem.
If cooling does not commence, the
expansion valve is defective and should
be replaced.
Report all defects to di-
rect support maintenance.
4-39.
Vent Damper Actuator.
a.
Removal.
—
(1) Refer to figure 4-1 and remove
the evaporator inlet louver.
(2) Refer to figure 4-23 and dis-
assemble the vent damper actuator and
control assembly as follows:
(a) Loosen the setscrew in the
actuator.
(b) Remove the actuator top
bracket by removing one nut, three
screws and three washers.
(c) Raise the actuator nut and
the actuator from the lower bracket.
(d) Remove the screw and nut from
the bracket on the vent door.
(e) Remove inner cable from con-
trol assembly.
(f) Remove outer nuts and grom-
met on control assembly.
(9) Remove control assembly outer
cable.
b.
Installation.
—
(1) Refer to figure 4-23 and in-
stall the vent actuator as follows:
Figure 4-23.
Vent damper actuator removal and installation
4-34
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