John Deere POWERTECH 4045 - Manual (Page 162)

Lubrication & Maint./2000 Hour/24 Month
RG,RG34710,5585 –19–27JUL06–1/1
Checking Crankshaft Vibration Damper
(6-Cylinder Engine Only)
RG8018
–UN–15JAN99
Grasp Vibration Damper
RG7508
–UN–23NOV97
Check Runout
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 and should be replaced 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 either JD281A, JDE81-4, or JDE83 Flywheel
Turning Tool.
5. Note dial indicator reading. If runout exceeds
specifications given below, replace vibration damper.
Specification
Vibration Damper—Maximum
Radial Runout
1.50 mm (0.060 in.) .............................................................
35-2
080706
PN=160