Rear leaf spring — removal and installation (Opel Omega B2)

Attention! If one of the rear springs needs to be replaced, the other one should be replaced as well, so as not to disturb the suspension geometry.

Removal

1. Block the front wheels, then jack up the rear of the car and place it on axle stands. Remove the rear wheel.

2. Separate the brake hose from the bracket on the trailing arm by pulling out the locking plate.

3. Remove the rubber mounts from the intermediate and rear mufflers (see the relevant section), then lower the exhaust system from the bottom by approximately 30 cm and tie it in this position.

4. On models with rear damping adjuster, disconnect the wiring harness from the rear roll sensor. Make alignment marks on the roll sensor actuator arm and stabilizer bar link, then press the link away from the ball joint on the actuator arm.

5. Raise the jack's diagonal arm slightly to reduce the load on the shock absorber.

6. On models equipped with a rear damper adjuster, release the air pressure through the shock absorber valve by separating the pressure tube from it (see Chapter 11).

7. Loosen and remove the lower shock absorber mounting bolt (see Chapter 11).

8. Disconnect the rear wheel speed sensor wiring from the underbody, then disconnect the wiring connector (see Section 9).

9. Support the final drive unit with a jack, then unscrew the bolts securing the rear cross member damper bracket to the bottom (see Chapter 19).

10. Lower the final drive assembly, rear crossmember and trailing arm until the rear leaf spring and rubber cushions can be removed.

Installation

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

• a) When installing the spring, make sure that its upper end faces the rear of the vehicle.
• b) Tighten all nuts and bolts to the specified tightening torque Specifications.
• c) On vehicles with rear suspension stiffness adjuster, install the longitudinal roll sensor lever using the marks made before removal.
• d) Install the wheel speed sensors as described in Section 9.

(Text copied from this portal: Opelbook.ru)