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MIL-A-62463B(AT)
TABLE I. Internal leakage - Type I actuator assembly.
Leakage
Requirement*
Test
No
Test item
oz/min
(cu cm/min)
Requirement
1.
Vane seal
10.14
(300)
4.6.7.1
2.
Piston ring
10.14
(300)
4.6.7.2
3.
Wheel valve:
3a.
Port 11 O-rings (2 at each end)
0.17
(5)
4.6.9
3b.
4-7A wheel valve leakage & related O-ring
0.17
(5)
4.6.10
3c.
1-2 wheel valve leakage & related O-ring
0.17
(5)
4.6.10
3d.
Port 3 wheel valve O-rings (2)
0.17
(5)
4.6.12
3e.
Port 1 wheel valve spool O-ring
0.17
(5)
4.6.13
3f.
2-3 wheel valve leakage & related O-ring
0.17
(5)
4.6.14
3g.
Port 4 wheel valve O-rings (2)
0.17
(5)
4.6.14
4.
Shock check valve
1.01
(30)
4.6.10
5.
Leveling valve seats:
5a.
"Fill" valve seat
0.34
(10)
4.6.11
5b.
"Drain" valve seat
0.34
(10)
4.6.14
6.
Leveling valve stems:
6a.
"Fill" valve stem
1.69
(50)
4.6.14
6b.
"Drain" valve stem
1.69
(50)
4.6.10
7.
Combined leakage (total of 1, 2, 6a, and 6b)
16.90
(500)
4.6.15
8.
Relief valve:
8a.
1.01
(30)
4.6.17
Internal leakage
8b.
1.01
(30)
4.6.18
Reseat leakage
*maximum allowed ounces per minute, oz/min (cubic centimeters per minute, cu cm/min).
3.4.2.3 Leveling valves.
3.4.2.3.1 Leveling "fill" valve closing. The leveling "fill" valve shall close within the rotation
specified in table II when tested per 4.6.19 through 4.6.22.
3.4.2.3.2 Leveling "drain" valve opening. The leveling "drain" valve shall open within the
rotation specified in table II when tested per 4.6.19 through 4.6.22.
TABLE II. Leveling valve operating positions.
Leveling Valve
Fill Valve Closing
Drain Valve Opening
Cam Position
(Amount of Shaft Rotation
(Additional Rotation From
(Cam Setting)
from a fully Rotated Position)
when Fill Valve Closes)
1R
59 3 CW from full CCW
6 to 12
1L
59 3 CCW from full CW
6 to 12
4R
46 3 CCW from full CW
6 to 12
4L
46 3 CW from full CCW
6 to 12
5

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