TM 5-3810-300-24&P-3
VIBRATION DAMPER 1.3.6
2. Slide the sleeve, if used, over the large diameter
of the crankshaft and against the oil slinger,
being sure the slinger is tight against the oil
pump drive gear; then, slide the spacer against
the sleeve.
3. With the Woodruff keys, if used, in place, slide
the inner cone, tapered end pointing to the front
of the crankshaft next to the oil slinger, or
against the spacer, if used.
NOTE: When the vibration damper and
crankshaft pulley are bolted together
and mounted on the front end of the
should be taken to be certain that the
inner cone does not prematurely clamp
to the crankshaft.
4. If, for any reason, the light and heavy dampers
were removed from the hub, assemble the two
Fig. 4. Vibration Damper and Crankshaft
dampers over the dowels and against the hub
Pulley Assembly Mounting
with the flat faces of the dampers facing each
other as shown in Figs. 1 and 3. Secure the
side of the pulley facing the crankshaft front
dampers to the hub with bolts and lock washers.
cover.
5. Slide the damper and hub as an assembly - long
7. Slide the outer cone over the crankshaft and into
end of hub facing crankshaft cover - into
the hub of the vibration damper, or the
position.
crankshaft pulley.
CAUTION: DO NOT hit viscous type
8. Install the crankshaft cap or the crankshaft
damper with hammer to position it on the
pulley.
crankshaft.
9. Thread the crankshaft cap or pulley retaining bolt
6. Install the crankshaft pulley and vibration
with washer, if used, into the crankshaft and
damper assembly with the damper assembly
tighten the bolt as follows:
a. Tighten to 180 lb-ft torque.
b. Strike the end of the bolt a sharp blow with
a 2 to 3 lb. lead hammer.
c. Tighten to 300 lb-ft torque and strike the
bolt again.
d. Tighten to 290-310 lb-ft torque.
CAUTION: The damper assembly must
Fig. 3. Double Vibration Damper Details and
be securely fastened to the crankshaft.
Relative Location of Parts
When the bolt is drawn up to the specified
torque, the cones will hold the damper
rigidly in place.
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