Front Anti-Roll Bar — Removal and Installation (Opel Vectra A)

Note: The nuts securing the stabilizer bar to the lower control arm must be replaced during installation.

Removal

1. Support the engine and raise the vehicle as described in steps 2 and 3 Chapters 3.

2. If required, remove the front exhaust system compartment as described in Section 4C.

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3. Working underneath the vehicle, loosen and remove the locknuts securing the ends of the anti-roll bar to the lower control arms. Remove the concave washers and rubber pads.

4. Make sure the engine is supported securely, then loosen and remove the two nuts and washers securing the rear transmission engine mount to the subframe.

5. Support the engine subframe with a jack, placing a piece of board between them.

6. Loosen and remove the two rear and two center bolts that secure the subframe to the underbody. Note that the rear bolts also secure the lower control arms to the subframe. The bolts are very tight and will likely require an extended bar to loosen them.

7. Loosen, but do not remove, the two bolts securing the subframe to the underbody.

8. Carefully lower the subframe enough to access the stabilizer bar to subframe mounting bolts, then loosen and remove the bolts.

9. Separate the anti-roll bar from the subframe and lower arms and remove it from under the vehicle.

Installation

10. Please note that on some models a vibration damper is attached to the center of the anti-roll bar (see illustration). If the stabilizer needs to be replaced, reposition the vibration damper (where it is applied) onto the new component in the position shown (see illustration).







11. If required, the anti-roll bar mounting bushings can be replaced (Chapter 9).

12. Perform installation in reverse order, paying attention to the following.

13. Connect the ends of the anti-roll bar to the lower arms, remembering that the concave washers that secure the rubber pads must be installed with the concave side facing the lower arm.

14. Tighten the stabilizer mounting nuts to the lower arm to achieve the specified compression of the rubber bushing as described in paragraph 16 Chapters 5. Replace the rubber bushings if necessary.

15. Tighten all nuts and bolts to the specified tightening torque Specifications, remembering that the rear bolts securing the subframe to the bottom must be tightened in stages (see Specifications).



16. Once the exhaust system has been removed, install the front exhaust system compartment as described in Section 4C.

17. Lower the vehicle onto its wheels, tighten the wheel bolts fully and, where applicable, fit the hubcap.