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OM-C3 11/21
Service and Maintenance - 2000 Hour
SP 25. Checking Crankshaft Vibration Damper
(M150C13 Only)
1. Remove belts (shown removed).
2. Grasp vibration damper with both hands and attempt
to turn it in both directions. If rotation is felt, damper is
defective and should be replaced.
IMPORTANT: The vibration damper assembly is not
repairable. Replace damper every 4500 hours or 60
months,whichever occurs first.
3. Check vibration damper radial runout by positioning a
dial indicator (A) so probe contacts damper outer
diameter.
4. With engine at operating temperature, rotate crankshaft
using Flywheel Turning Tool.
5. Note dial indicator reading. If runout exceeds
1.50 mm (0.060 in.) replace vibration damper.
Grasp vibration damper
Check runout