GM Grand Am/Achieva/Calais/Skylark/Somerset 1985-98

Crankshaft Damper



See Figure 1

A crankshaft balancer holder is required along with a puller to remove and install the damper.

On the 1998 2.4L and 3.1L engines after the balancer has been removed perform the CKP Learn Procedure. Refer to Driveability & Emissions Controls .

  1. Disconnect the negative battery cable.
  3. Remove the drive belt.
  5. Raise and safely support the front of the vehicle securely on jackstands.
  7. If necessary, remove the front wheel, right splash shield and transaxle converter cover.
  9. Retain the crankshaft while loosening the crankshaft damper bolt and washer.
  11. Remove the damper (balancer) and key using a puller.

Click image to see an enlarged view

Fig. Fig. 1: View of a common crankshaft damper-2.4L engine shown

To install:

An automatic transaxle damper must not be used on an manual equipped engine.

  1. Lubricate the front seal and sealing surface of the damper with chassis grease.
  3. Place the balancer onto the crankshaft indexing keyway. Tap into place using a rubber or sand filled mallet.
  5. Install the bolt and washer. Use a retailing tool to keep the crankshaft from turning. Tighten the damper bolt to proper torque specifications.

Do not use a torque angle meter to rotate the retaining bolt the additional 90°. The torque capacity of the tool will be exceeded and damage to the tool will result.

  1. On the 2.4L engine, tighten the bolt to specification while using the holding tool to prevent the crankshaft from turning. Place marks on the socket next to one to four marks on the tool. This mark will represent the zero point. Tighten the bolt by rotating the socket clockwise 90°. At the 90°, the socket indexes with the next mark on the tool.
  3. Install all remaining components.