TM 9-4120-404-14
4-27. LIQUID SIGHT INDICATOR (SIGHT GLASS).
This Task Covers:
a. Removal
b. Installation
Initial Setup:
Tools Required
Tool Kit, Service, Refrigeration, Unit (Item 1, Appendix B)
Pump, Vacuum (Item 1, Appendix B)
Regulator Assembly (Item 6, Appendix B)
Material/Parts Required
None
Equipment Condition
Air conditioner shut down and cool.
Recover refrigerant from system (see para. 4-6).
Condenser fan scroll nearest liquid sight indicator removed (see para. 4-14).
Related tube connections debrazed (see para. 4-7).
(1) Remove two screws (1), two lock washers (2) and mounting plate (3).
(2) Remove liquid sight indicator (4) from unit.
b. Installation.
(1) Position liquid sight indicator (4) on related tubing.
(2) Braze the tube connections (see para. 4-7).
(3) Replace the dehydrator (see para. 4-18).
(4) Secure mounting plate (3) and liquid sight indicator (4) to unit with two screws (1) and two lock washers (2).
(5) Install rear cover (see para. 3-27).
(6) Install condenser fan scrolls (see para. 4-14).
(7) Service refrigeration system per para. 4-6.
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