TM 55-1520-240-23-9
11-116
DISASSEMBLE, INSPECT AND REPAIR ROLL VISCOUS DAMPER (1025-820)
(AVIM)
(Continued)
11-116
Do not tear diaphragm; otherwise,
damper will malfunction.
6.
Lift diaphragm (11) outer edge. Remove
diaphragm from abutment (5).
7.
Inspect diaphragm (11) for damage. There shall
be no cracks, tears or nicks.
8.
Remove retaining ring (12) from abutment (5).
Use retaining ring pliers.
9.
Pull abutment (5) outward. Remove abutment
from case (1).
10.
Remove packing (13) from abutment (5).
11.
Remove bearing (14) from abutment (5). Use
arbor press.
12.
Inspect bearing (14) (TM 55-1500-322-24).
Use care inspecting valve stops and
check valves. Damage to stops
or valves can cause component
malfunction.
13.
Inspect rivets (15), valve stops (16), and check
valves (17) for damage. There shall be no
looseness, distortion, or cracks. If damaged,
perform step 14. If not, go to step 15.
14.
Remove four rivets (15), four valve stops (16),
and four check valves (17) from abutment (5).
INSPECT
15.
Inspect bearing bore (18) of abutment (5). Blend
out damaged areas by burnishing or sanding.
Use crocus cloth (E123). Bore shall be 0.876
inch dia maximum.
11-551
