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TM5-4120-387-14
(4) Carefully pull switches (S6) and (S5) from enclosure far enough to gain
access to switches (S6) and (S5) terminals.
(5) Tag and remove wire leads on switches (S5) and (S6),
(6) Using screwdriver, remove two screws and lockwashers from pressure
switch (S8).
(7) Carefully pull switch (S8) from enclosure far enough to gain access to
switch terminals.
(8) Tag and remove wire leads from switch (S8).
b.
Inspection/Test
(1) Check that wire leads and terminal attachment screws are in place.
Tighten if loose.
Replace if missing.
(2) Check that capillary line is not kinked, mashed or broken. Replace
switch if capillary line is damaged.
(3) Use a continuity tester or multimeter to check continuity between
terminals 2 and 3 on switch.
If there is no continuity, the switch is properly
open.
If continuity is found, switch must be replaced.
c.
Removal
(1) Discharge the refrigerant per paragraph 5-6.
(2) Remove evaporator fan. (See para 4-58.)
(3) Remove condenser fan. (See para 4-59.)
(4) Remove evaporator and condenser fan motor. (See para 4-60.)
(5) Using two wrenches, loosen and disconnect switch capillary tubing flare
nut from pressure tap.
(6) Remove pressure switch and capillary with flare nut from unit.
d.
Installation
(1) Insert capillary with flare nut through hole in back of rear panel.
(2) See tags and wiring diagram (see fig. 4-7) and connect wire leads.
Remove tags.
(3) Using two wrenches, connect flare nut to pressure tap.
(4) Using screwdriver, secure pressure switch (S8) to enclosure with two
screws and lockwashers.
5-35
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