ARMY TM 9-4120-380-14
NAVY EE-000-BA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-21
5.21. GRANT PRESSURE SWITCH (S5).- Continued
TESTING/ADJUSTMENT
a. Using multimeter, check continuity between two lead terminals (10) If continuity is indicated (switch closed),
switch is defective Replace switch.
b Connect service manifold blue hose to nitrogen cylinder
c. Connect yellow 114-mch (0.64 cm) hose to pressure line (1)
d Using multimeter, switch shall close at 425 to 475 psig (30 to 33 kg/cm2) and open at 335 to 385 psig (24 to
27 kglcm2).
e If switch cannot be adjusted to ranges in Step d, replace switch
INSTALLATION
a.
Drill three 5132-inch holes in replacement switch terminals (10).
b.
Fungus proof switch per MIL-V-173.
c.
Place switch (9) m mounting position.
d.
Install two screws (8), lockwashers (7), and flat washers (6).
e.
Install clamp (2) with screw (5), two flat washers (3), and locknut (4).
f.
Install high refrigerant pressure line (1).
g.
Reconnect wire leads and remove tags.
h.
Install cover (11).
FOLLOW ON PROCEDURES
a.
Purge compressor (paragraph 5.18)
b.
Leak test all newly connected joints and those in the repair area (paragraph 5.13).
c.
Connect air conditioner input power at source
d.
Check refrigerant level and charge if necessary (paragraph 5.15).
e.
Install compressor section panel (paragraph 4.24)
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