TM 55-1520-240-23-9
11-119
TEST VISCOUS DAMPERS (1025-820, 930 OR 940) (AVIM)
11-119
INITIAL SETUP
Applicable Configurations:
All
Tools:
Hydraulic Repairers Tool Kit, NSN 5180-00-323-4891
Test Set (T100)
Clamps (2)
Materials:
None
Parts:
Bolts
Washers
Personnel Required:
Aircraft Pneudraulic Repairer
Inspector
References:
TM 55-1520-240-23P
Task 11-120
Task 11-121
Equipment Condition:
Off Helicopter Task
Viscous Damper Arm Removed (Task 11-138)
NOTE
Viscous damper must be stored
between 70º to 80ºF (20º to 25ºC) for
at least 2 hours just before test.
Procedure is same to test viscous
dampers 1025-820, 1025-930, and
1025-940 except where noted.
1.
Clamp base plate (1) to level surface (2). Use
two clamps (3).
2.
Position damper (4) on support (1). Install two
bolts (5) and washers (6).
3.
Install disk (7) on damper shaft (8), with wire
anchor (9) on top of disk when disk is turned fully
clockwise.
4.
Hook weight (10) on wire (11). Allow weight to
hang free.
11-561