TM 9-4120-399-14
5-27. SERVICE VALVES.
This Task Covers:
b. Installation
a. Removal
lnitiai Setup:
Tools Required
Tool kit, Refrigeration
Material's Required
None
Equipment Condition
Air conditioner shut down and cool.
Pressure switch cover removed (See para. 3-4).
Refrigeration system discharged (See para. 5-7).
Purge the system with nitrogen (See para. 5-8).
a. Removal.
(1) Remove two caps (1) and (2).
(2) Remove two screws (3), two flat washers (4), two lock washers (5), and two clamps
(6).
(3) Remove valve stems (7) and (8) from valves (9) and (10).
(4) Debraze the valves (9) and (10) (See para. 5-9).
(5) Remove valves (9) and (10) from tube connection.
b. Installation.
(1) Remove valve stems (7) and (8) from replacement valves (9) and (10).
(2) Place replacement valves (9) and (10) on tube connection.
(3) Braze valves (9) and (10) to tube connection (See para. 5-9).
(4) Install stems (7) and (8) in valves (9) and (10).
(5) Install caps (1) and (2).
(6) Install two clamps (6), two lock washers (5), two flat washers (4), and two screws
(3).
