TM 55-1520-240-23-3
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TEST SWIVEL HOUSING AND SPINDLE (AVIM)
(Continued)
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14.
Remove elbow (17), union (18), and packing (19)
from lower locking actuator port (20).
15.
Check locking and centering as follows:
a.
Connect test stand to test setup.
b.
Connect fitting (21) on test setup reduced
pressure hose to cam follower port (3).
c.
Connect fitting (22) on other test setup hose
to lower locking actuator port (20).
d.
Close pressure restrictor (23).
e.
Close shutoff valve (9).
f.
Apply 3000 psi pressure to lower port (20).
This unlocks aft landing gear (16). Open
restrictor (23) slowly and apply 300 psi
pressure to cam follower port (3).
g.
Turn spindle (15) through 30º. Release
spindle. Check that spindle returns to center
smoothly without binding.
h.
Open shutoff valve (9).
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