TM 9-4120-399-14
5-26. PRESSURE SWITCHES (S5 AND S6). Continued.
b. Removal.
(1) Tag and remove jumper lead (1) between pressure switch S5 (2) and pressure switch
S6 (3).
(2) Restrain tube (4) and fitting (5) and loosen flare nut (6).
(3) Restrain tube (7) and fitting (8) and loosen flare nut (9).
(4) Remove two screws (10) and lift mounting bracket (11) from unit (12).
(5) Remove four screws (13), four lock washers (14), and pressure switches S5 (2) and
S6 (3).
Installation.
c.
(1) Coil capillary tube of replacement pressure switch.
(2) Install four screws (13), four lock washers (14), and pressure switches S5 (2) and S6
(3) to bracket (11).
(3) Install bracket (11) and two screws (10).
(4) Restrain tube (7) and fitting (8) and tighten flare nut (9).
(5) Restrain tube (4) and fitting (5) and tighten flare nut (6).
(6) See tags and wiring diagram Figure 1-4 and connect wire leads (1) to pressure switch
S5 (2) and S6 (3). Remove tags.
(7) Replace filter/dryer dehydrator (See para. 5-15).
(8) Leak check the flare nut connection (See para. 5-10).
(9) Evacuate the system (See para. 5-11).
(10) Charge the system (See para. 5-12).
(11) Install pressure switch cover (See para. 3-4).
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