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ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
5-30.
SERVICE VALVE (EXPANSION).
This task covers:
Inspection
Removal
Installation
INITIAL SETUP:
Tools
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Personnel: 1
Equipment Conditions:
WARNING
Disconnect input power to the air conditioner before performing any internal maintenance. Voltages
used can KILL. Shutting the unit off at the control panel does not disconnect unit power.
1.
Disconnect air conditioner input power at source.
2.
Remove right front evaporator panel (para 4-25).
3.
Swing control box out (para 4-45).
INSPECTION
1.
Check that caps are in place and that threaded connection ends are not damaged. Replace if missing or damaged
(see Figure 5-19).
2.
If a leak is suspected or indicated, test per paragraph 5-15.
REMOVAL
1.
Pump down refrigerant system (para 5-21).
2.
Remove two screws (4), locknuts (1), and four washers (2) and (3).
3.
Remove valve caps (5).
4.
Debraze tubing at joints (7) (para 5-14).
5.
Debraze valve (6) from bracket (8) (para 5-14).
INSTALLATION
NOTE
Check to see if valve caps have been removed before brazing.
1.
Braze valve (6) onto bracket (8) (para 5-14).
2.
Place valve (6) into mounting position.
3.
Install two screws (4), four washers (2) and (3), and two locknuts (1).
4.
Braze tubing (7) at joints (para 5-14).
5.
Install valve caps (5).
6.
Leak test all newly connected joints and those in the repair area (para 5-15).
5-63
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