Lubrication & Maint./2000 Hour/24 Month Checking Crankshaft Vibration Damper (6-Cylinder Engine 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. RG8018 –UN–15JAN99 IMPORTANT: The vibration damper assembly is not repairable and should be replaced every 4500 hours or 60 months, whichever occurs first. Grasp Vibration Damper 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. RG7508 –UN–23NOV97 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.) ............................................................. Check Runout RG,RG34710,5585 –19–12NOV01–1/1 35-2 021604 PN=160