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Astra F (1991-1998, petrol) Astra G (1998-2004, petrol) Astra G (1998-2004) Astra H (2004-2009) Astra J (2009-2015, petrol)
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  • Removal and installation the steering knuckle

Removal and installation the steering knuckle (Opel Astra J)

            0

You will need: keys "8", "15" (two), "18" (two), socket head "32".

1. Raise and support the front of the vehicle. Remove the wheel.

1. Raise and support the front of the vehicle. Remove the wheel.


2. Loosen the hub nut.

Note: The hub nut is tightened to a very high torque. To loosen, secure the hub with a tire iron (or a small crowbar), resting it on the wheel mounting nuts screwed onto the studs, as shown in the photo for point 2.


Note: The hub nut is tightened to a very high torque. To loosen, secure the hub with a tire iron…


3. Completely unscrew the hub nut and remove it.

3. Completely unscrew the hub nut and remove it.


4. Remove the front wheel brake caliper assembly (see Replacing the front wheel brake caliper), without disconnecting the brake hose, and secure it with wire, preventing the hose from twisting or being pulled.



4. Remove the front wheel brake caliper assembly (see Replacing the front wheel brake caliper),…


5. Remove the wheel speed sensor from the steering knuckle (see Replacing wheel speed sensors).

5. Remove the wheel speed sensor from the steering knuckle (see Replacing wheel speed sensors).


6. While holding the bolt from turning, unscrew the nut of the clamp bolt of the terminal connection of the steering knuckle with the ball joint..

6. While holding the bolt from turning, unscrew the nut of the clamp bolt of the terminal…


7. …and remove the bolt.

7. …and remove the bolt.


8. Remove the ball joint pin from the steering knuckle.



8. Remove the ball joint pin from the steering knuckle.


9. Loosen the nut securing the outer tie rod end joint pin to the steering knuckle, holding the pin with a second wrench to prevent it from turning…

9. Loosen the nut securing the outer tie rod end joint pin to the steering knuckle, holding the pin…


10. …and remove your finger from your fist.

10. …and remove your finger from your fist.


11. Remove the brake disc (see Replacing the brake disc of the front wheel brake mechanism).

Note: When removing the steering knuckle, it is not necessary to remove the brake disc. However, when replacing the knuckle or front hub, the disc will need to be removed, and it is more convenient to perform this work on the knuckle installed on the vehicle.




Note: When removing the steering knuckle, it is not necessary to remove the brake disc. However,…


12. Remove the front wheel hub (see Replacing the front wheel hub).

12. Remove the front wheel hub (see Replacing the front wheel hub).


13. Keeping the bolts from turning…

13. Keeping the bolts from turning…


14. …unscrew the nuts of the two bolts securing the shock absorber strut to the steering knuckle…

14. …unscrew the nuts of the two bolts securing the shock absorber strut to the steering knuckle…


15. …and remove the bolts from the holes in the strut and knuckle.



15. …and remove the bolts from the holes in the strut and knuckle.


16. Remove the steering knuckle.

17. Install the parts in the reverse order of removal. Tighten the bolts and nuts to the specified torques.

18. Check and, if necessary, adjust the wheel alignment angles. Use the services of workshops with special equipment.


This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
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Previous articles
Opel Astra J: Front suspension
Next articles

Replacing the front suspension stabilizer bar components
Replacing the front suspension arm
Replacing the ball joint of the front suspension shock absorber
Replacing the upper support of the front suspension shock absorber strut
Repair of the front suspension shock absorber
Removal and installation the front suspension shock absorber
Replacing the front wheel hub
Removal and installation the front suspension subframe
Checking and adjusting wheel alignment angles


See similar ones from other Opel car manuals:
▶ Removal and installation the front steering knuckle Opel Corsa C (2000-2006, petrol)
▶ Replacing the steering knuckle of the GMA suspension Opel Insignia A (2008-2017)
▶ Steering knuckle — removal and installation Opel Omega A (1986-1993)
▶ Removal and installation the steering knuckle Opel Vectra C (2002-2008)
▶ Removal and installation the steering knuckle Opel Frontera A (1991-1998, petrol)
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Astra J (2009-2015, petrol) 
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