Genuine Volvo 780 Harmonic Balancer

Volvo 780 Harmonic Balancer Parts and Q&A

• Crankshaft Pulley
  1271443
  Q: How to remove and install a Harmonic Balancer on Volvo 780?

  A:

  To remove and install components for a variety of engine types, disconnect a negative battery cable first. For the 2.3L 4 cylinder engine, remove the drive belts, cooling fan, cooling fan shroud, center nut on the damper, and the damper from the crankshaft. To install, place the damper back on the crankshaft, tighten the center nut to 44 ft. lbs. and then 60 degrees more, before reinstalling the cooling fan shroud, drive belts and cooling fan before reconnecting the negative battery cable. For 2.8L 6-cylinder engine After disconnecting the battery Remove drive belt(s) Cooling fan Raise the vehicle Take off the splashguard Remove the starter and use a special tool to prohibit the turning of the crankshaft, then remove center nut and pulley on the crankshaft being careful of the aligning key. To install, align the pulley on the crankshaft, tighten the center nut to 177-207 ft. lbs., reinstall the starter and splashguard, lower the vehicle and reconnect the battery. For 2.9L 6-cylinder engine, go through similar first steps, then unbolt the 4 bolts of the vibration damper, use a tool to secure the damper, and take off the middle nut and damper. When installing, put the damper back, tighten the center nut to 221 ft. lbs., reinstall the damper bolts, cooling fan, and drive belts, than lower the vehicle and reconnect the battery. For these 2.3L and 2.4L 5-cylinder engines disconnect the battery, raise the vehicle, and get inside the engine by bending backward the fenderwell trim. Remove the drive belt and damper bolts, use a tool to hold the damper and remove the center nut and damper. To install, install the damper back, put the center nut back and tighten to 133 ft. lbs. and install the damper bolts, drive belt, fenderwell trim, lower vehicle, reconnect battery.