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 TM 9-4120-425-14&P
SERVICE VALVES DIRECT SUPPORT MAINTENANCE REPLACEMENT - Continued
0073-00
WARNING
Check that power source is disconnected. Check that system is discharged of refrigerant.
INSPECT
Interior of Housing
1.
Visually inspect all valves for signs of damage.
2.
Inspect valve fittings for leaks.
3.
Inspect internal valve core (tire type valve). Replace if defective.
REMOVAL
1.
Remove four screws (1), four lockwashers (2), two flat washers (3), and four clamps (4) to release service valves (6)
and tubing (8) from scroll (9).
2.
Debraze service valves (6) from tubing (8) (See WP 0051-00).
INSTALLATION
1.
Purge system (See WP 0050-00).
2.
Braze service valves (5) to refrigerant piping (8) (See WP 0051-00).
3.
Secure service valves to condenser scroll with screws (1), lockwashers (2), flat washers (3) and clamps (4).
4.
Replace filter-drier (See WP 0066-00).
5.
Leak test refrigeration system (See WP 0052-00).
6.
Evacuate refrigeration system (See WP 0053-00).
7.
Charge refrigeration system (See WP 0054-00).
8.
Secure valve caps (5).
9.
Install rear top panel (See WP 0019-00).
0073-00-2
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