|
| |
ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
5-32.
SERVICE VALVES (SCHRADER).
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 condenser panel (para 4-28).
INSPECTION
1.
Check that caps are in place and that threaded connection ends are not damaged. Replace if missing or damaged
(see Figure 5-21).
2.
If a leak is suspected or indicated, test per paragraph 5-15.
REMOVAL
1.
Discharge refrigerant system (para 5-12).
2.
Remove valve cap (1) .
3.
Debraze tubing (8) at joints (2) (para 5-14).
4.
Remove screw (7), flat washer (6), locknut (4), and valve plate (5).
5.
Debraze valve (3) from valve plate (5) (para 5-14).
INSTALLATION
NOTE
Check to see if valve caps have been removed before brazing.
1.
Remove schrader valve stem on replacement valve.
2.
Braze valve (3) onto valve plate (5) (para 5-14).
3.
Install valve plate (5) with screw (7), flat washer (6), and locknut (4).
4.
Braze tubing (8) at joints (2) (para 5-14).
5.
Install schrader valve stem.
6.
Install valve cap (1).
7.
Leak test all newly connected joints and those in the repaired area (para 5-15).
5-67
|
