5.1. Rear axle height adjustment valve (670 models with front and rear air suspension (code CE3))
Removal
1. Reduce the pressure in the air ducts by loosening tubes 1, 2 and 3 on valve 41.01 (figure 5.34). Replace sealing ring 7.
2. Unscrew the adjusting lever 5 on valve 41.01.
3. Unscrew and remove the front axle height adjustment valve 41.01.
Installation
4. Installation is carried out in the reverse order of removal. Place the adjusting lever 5 on the guide so that the points are set in the direction of the arrow.
Figure 5.34. Front axle height adjustment valve: 1, 2, 3 - Air ducts; 4, 6, 8 - Bolts; 5 - Adjustment lever; 7 - Sealing ring; 9 - Nut; 38.02 - Diagnostic connection; 41.01 - Front axle height adjustment valve
5.2. Rear axle height adjustment valve (models 668, 670 with rear air suspension)
(Original published on the website: «mercedesman»)
Removal
1. Reduce the pressure in the air ducts by loosening tubes 4 and 5 (figure 5.35).
2. Unscrew tube 6 from the air chamber on the rear axle height adjustment valve 4.
3. Unscrew tube 5 from the reservoir on the rear axle height adjustment valve 4.
4. Unscrew the adjusting lever 8 from the rear axle height adjustment valve 4.
5. Unscrew and remove the rear axle height adjustment valve 4.
Installation
6. Installation is carried out in the reverse order of removal. Replace the sealing rings 9. Install the adjusting lever 8 on the guide so that the points are set in the direction of the arrow.
Figure 5.35. Rear axle height adjustment valve (models 668, 670 with rear air suspension): 4 - Rear axle height adjustment valve; 5, 6 - Air ducts; 8 - Adjustment lever; 9 - Sealing rings; 11, 12, 13 - Bolts.