TM 55-1520-240-23-9
11-115
DISASSEMBLE, INSPECT AND REPAIR THRUST, PITCH OR YAW VISCOUS DAMPER
(1025-930 OR 1025-940) (AVIM)
(Continued)
11-115
20.
Tap thread end of vane shaft (23). Remove shaft
from case (1). Use soft-faced hammer.
21.
Remove packing (24) from case (1).
22.
Remove retaining ring (25) from case (1). Use
retaining ring pliers.
23.
Remove case (1) from vise (2).
24.
Remove bearing (26) from case (1). Use arbor
press.
25.
Inspect bearing (26) (TM 55-1500-322-24).
26.
Remove four screws (27) from nameplate (28).
Remove nameplate from case (1).
INSPECT
27.
Inspect shaft (23). Blend out damaged areas by
burnishing or sanding. Use crocus cloth (E123).
Measurements of shaft shall be as follows:
a.
Outside diameter (29) — 0.393 inch min.
b.
Outside diameter (30) — 0.496 inch min.
c.
Outside diameter (31) — 0.374 inch min.
d.
Square (32) — 0.312 x 0.312 inch min.
e.
Shaft vanes (33) — 1.248 inch min width.
28.
Check four oil ports (34) in shaft (23) are open.
Use lockwire (E234).
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