TM 55-1520-240-23-9
11-117
ASSEMBLE THRUST, PITCH OR YAW VISCOUS DAMPER (1025-930 OR 10-25-940)
(AVIM)
(Continued)
11-117
7.
Position check valve (10) toward abutment (11)
on arm (12). Position valve stop (13), curve
outward and toward abutment, on check valve.
Align holes.
8.
Install two rivets (14).
9.
Repeat step (steps 7 and 8) for three check
valves (15 and 16, and 17) and three valve stops
(18, 19, and 20) for two arms (12 and 21) of
abutment (11).
10.
Install packing (22) on abutment (11).
11.
Install bearing (23) in abutment (11) until
bottomed. Use arbor press.
INSPECT
12.
Install retaining ring (24) in abutment (11). Use
retaining ring pliers.
13.
Turn shaft (8) to position vanes (25) about 90º to
mounting surface (26).
14.
Position abutment (11) with port (27) about 90º
and away from surface (26). Align two dowels
(28) in abutment with case (2) holes (29). Install
abutment on case until bottomed.
15.
Install packing (30) on valve assembly (31).
16.
Install valve assembly (31) and diaphragm (32)
on abutment (11) with valve assembly in shaft
(8). Insert lip (33) in groove (34) of abutment.
INSPECT
17.
Position cover (35) and end cover (36) on
abutment (11). Install four screws (37).
18.
Remove case (2) from vise (5).
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