Genuine Mercedes-Benz 190E Harmonic Balancer

Mercedes-Benz 190E Harmonic Balancer Parts and Q&A

• Vibration Damper
  102-030-14-03-64
  Q: How to remove and refit the harmonic balancer and hub in the Four-cylinder petrol engine on Mercedes-Benz 190E?

  A:

  To make things easier, start by taking the cooling fan blades and cowl assembly off, then the auxiliary drivebelt. Loosen the fixing bolts that secure the pulley / vibration damper on the hub and remove it, counterholding with a socket on the hub securing bolt where needed. To refit it, reverse refit, making sure you refit the auxiliary drivebelt, and the cowl and fan blades of the cooling fan. A puller might be required to remove the hub, and a 300 Nm (221 lb ft) torque wrench will be required to replace it. To start with, take away the crankshaft pulley/vibration damper as explained above. Design a device to stabilize the hub with two pieces of steel bar linked together by a oversized pivot bolt, and joined to the hub using the bolts to fit the pulley/vibration damper. Call off the hub bolt with a socket and long swing-bar, and record the tightness; unscrew the hub bolt and loosen the spring washers. Where provided, loosen the bottom fitting bolt of the auxiliary belt tensioner damper strut and bend it off centre. With an appropriate puller, remove the hub at the front of the crankshaft, and retrieve the Woodruff key as needed. To refit, the Woodruff key may be inserted back into the crankshaft groove, (with or without full action), where the hub groove and the key machined face align, and then slide into the crankshaft end. Re-oil the spring washers and fit the convex side up to the head of the hub bolt, then refit the hub securing bolt by smearing oil onto the bolt threads. Reassemble the holding tool to the hub as in the removal process and ensure the hub securing bolt is tightened to the prescribed torque without causing any harm or damage. Lastly, re-install the crankshaft pulley/vibration damper as above.