OEM Chevrolet Silverado 3500 Classic Harmonic Balancer

Chevrolet Silverado 3500 Classic Harmonic Balancer Parts and Q&A

• Vibration Damper
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  Q: How to replace the Harmonic Balancer on 4.8L, 5.3L, and 6.0L engines on Chevrolet Silverado 3500 Classic?

  A:

  The replacement process for crankshaft balancer requires professionals to use these specific tools: crankshaft front oil seal installer (J 41478), crankshaft balancer and sprocket installer (J 41665), crankshaft balancer remover (J 41816), crankshaft end protector (J 41816-2), and flywheel holding tool (J 42386-A) along with angle meter (J 45059). The first step begins by taking off the air conditioning Drive Belt together with lower fan shroud and Starter motor. Use the teeth of the flywheel holding tool (J 42386-A) to achieve the correct mesh position with engine flywheel teeth before installing with two bolts (one M10-1.5 x 120 mm and one M10-1.5 x 45 mm) that require assembly torque of 50 nm (37 ft. Lbs.). The crankshaft balancer bolt needs to be uninstalled but will return for installation. The crankshaft balancer remover (J 41816) with crankshaft end protector (J 41816-2) can be used to properly uninstall the light assembly before cleaning and examination. Place the balancer facing directly onto the crankshaft before installing it with the crankshaft balancer and sprocket installer (J 41665) combined with the crankshaft front oil seal installer (J 41478). Remove the used balancer bolt from its current position once the torque reaches 330 nm (240 ft. Lbs.) but maintain the crankshaft nose at 2.4 - 4.48 mm (0.094 - 0.176 inch) into the balancer bore before its extraction. Run another installation cycle of the crankshaft balancer and sprocket installer (J 41665) in case further procedures are required. A new balancer bolt must be installed before achieving 50 nm (37 ft. Lbs.) torque and 140 degrees measured by an angle meter (J 45059). The procedure ends with Starter motor and lower fan shroud installation and a/c Drive Belt application after removing the flywheel holding tool (J 42386-A). Next step is the crankshaft position system variation learn process.