Removing
1. Mark the direction of rotation of the wheel with an arrow on the sidewall of the tire.
2. Loosen the wheel bolts. In this case, the car must be on wheels.
3. Jack up the rear of the vehicle, jack it up and remove the rear wheel.
4. Remove the brake drum, see relevant chapter.
Attention! For cars A 190 / A 210, the rear brake disc is removed, see relevant chapter.
5. Remove the protective cap from the hub nut using a puller or knock it off with a suitable tool.
6. Bend the cotter pin on the hex flanged nut and unscrew the nut from the hub.
Attention! High tightening torque. Risk of injury.
7. Remove the flange together with the spacer washer from the shank of the cross beam (see illustration 7.9 in section «Brake system»). If necessary, remove the wheel hub by removing the circlip.
Installation
8. Install the wheel hub, if removed, and secure with a new circlip.
9. Measure the length of the trailing arm trunnion from the end to the contact surface of the trunnion.
The nominal value is 62.5 mm. For a different length, replace the pin with a new one. Install a spacer about 4 mm thick if the rating is correct.
10. Slide the cross beam shank flange with spacer washer onto the trailing arm trunnion.
11. Screw on a new hex flanged hub nut and tighten to 170 Nm.
Attention! High tightening torque. Risk of injury.
13. Place a protective cap on the rear wheel hub nut or carefully tap it with a hammer. Replace a damaged or loose cap with a new one.
14. Cars A 190 and A 210. Install the rear brake discs, see relevant chapter.
15. Install the brake drum, see relevant chapter.
16. Lubricate the centering saddle of the wheel disc on the hub with a thin layer of grease. Do not lubricate wheel bolts. Replace rusted bolts with new ones. Observe the direction of rotation of the wheel.
17. Screw in bolts of fastening of a back wheel and lower the car on wheels.
18. Tighten the wheel bolts in a cross pattern to 110 Nm.