TM 5-2420-230-24-2
Rubber Element Vibration Damper - Cleaning and Inspection (1-23)
Section 1 - Cylinder Block - Group 1
Page 1-40
B Series Shop Manual
Clean the damper with a solvent cleaner.
The viscous damper is filled with a silicone fluid. After
many hours or use, the silicone fluid may become thicker
and expand. To determine if the damper thickness is
correct, remove the paint from the damper in four loca-
tions on either side of the damper. Measure and record
the thickness of the damper in four places. Measure the
thickness 3.175 mm [0.125 inch] from the out side of the
damper. Replace the damper if its thickness varies by
more than 0.25 mm [0.010 inch].
Spray the damper with spot check developer, Type
SKD-NF or its equivalent. Heat the damper in an oven
(rolled lip side down) at 93C [200F] for 2 hours.
Caution: Wear protective gloves to prevent personal in-
jury when handling parts that have been heated.
Remove the damper from the oven and check for fluid
leakage. If there is leakage, replace the damper.
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